首页 > 最新文献

International Journal of Applied Mechanics and Engineering最新文献

英文 中文
Heat Transfer Effects on Carbon Nanotubes Along a Moving Flat Plate Subjected to Uniform Heat Flux 均匀热流作用下碳纳米管沿移动平板的传热效应
Q3 Chemical Engineering Pub Date : 2022-12-01 DOI: 10.2478/ijame-2022-0051
M. Ferdows, M. Shamshuddin, M. Reza, R. Quadir
Abstract In the present paper, a theoretical analysis is made to investigate fluid flow and heat energy transformation features of single and multi-walled water functionalized carbon nanotubes (CNTs) with uniform heat inconstancy boundary conditions onward a flat plate. The liquid motion and momentum transfer of carbon nanotubes (CNTs) have been analyzed using a homogeneous flow model. Both single-wall CNTs (SWCNTs) and multi-wall CNTs (MWCNTs) used base fluids, namely, water. The thermophysical characteristics of CNTs regarding the solid volume fraction of CNTs are studied by applying empirical correlations. Similarity transformations have been used to the governing partial differential equations turning them into ordinary differential equations. The outcome of similarity transformations which are nonlinear ordinary differential equations subjected to reconstructed boundary conditions, are subsequently solved numerically using bvp4c. The effects of the governing parameters on the dimensionless velocity, temperature, and skin friction are investigated numerically and graphically. An increase in the volume fraction and the velocity ratio parameter increase the flow, the velocity, and the temperature profile. Regardless of any physical parameter, SWCNTs give better heat transfer than MWCNTs.
本文从理论上研究了具有均匀热非恒定边界条件的单壁和多壁水功能化碳纳米管(CNTs)沿平板的流体流动和热能转换特性。采用均匀流动模型分析了碳纳米管的液体运动和动量传递。单壁CNTs (SWCNTs)和多壁CNTs (MWCNTs)均使用基础流体,即水。应用经验关联法研究了CNTs在固相体积分数方面的热物理特性。用相似变换将控制偏微分方程转化为常微分方程。用bvp4c对边界条件重构后的非线性常微分方程的相似变换结果进行了数值求解。用数值和图形研究了控制参数对无量纲速度、温度和表面摩擦力的影响。体积分数和流速比参数的增加增加了流量、速度和温度分布。无论任何物理参数如何,SWCNTs的传热效果都优于MWCNTs。
{"title":"Heat Transfer Effects on Carbon Nanotubes Along a Moving Flat Plate Subjected to Uniform Heat Flux","authors":"M. Ferdows, M. Shamshuddin, M. Reza, R. Quadir","doi":"10.2478/ijame-2022-0051","DOIUrl":"https://doi.org/10.2478/ijame-2022-0051","url":null,"abstract":"Abstract In the present paper, a theoretical analysis is made to investigate fluid flow and heat energy transformation features of single and multi-walled water functionalized carbon nanotubes (CNTs) with uniform heat inconstancy boundary conditions onward a flat plate. The liquid motion and momentum transfer of carbon nanotubes (CNTs) have been analyzed using a homogeneous flow model. Both single-wall CNTs (SWCNTs) and multi-wall CNTs (MWCNTs) used base fluids, namely, water. The thermophysical characteristics of CNTs regarding the solid volume fraction of CNTs are studied by applying empirical correlations. Similarity transformations have been used to the governing partial differential equations turning them into ordinary differential equations. The outcome of similarity transformations which are nonlinear ordinary differential equations subjected to reconstructed boundary conditions, are subsequently solved numerically using bvp4c. The effects of the governing parameters on the dimensionless velocity, temperature, and skin friction are investigated numerically and graphically. An increase in the volume fraction and the velocity ratio parameter increase the flow, the velocity, and the temperature profile. Regardless of any physical parameter, SWCNTs give better heat transfer than MWCNTs.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"27 1","pages":"66 - 81"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85460802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computational Approach to Solving a Layered Behaviour Differential Equation with Large Delay Using Quadrature Scheme 用正交格式求解大延迟分层行为微分方程的计算方法
Q3 Chemical Engineering Pub Date : 2022-12-01 DOI: 10.2478/ijame-2022-0054
Amala Pandi, Lalu Mudavath, Phaneendra Kolloju
Abstract This paper deals with the computational approach to solving the singularly perturbed differential equation with a large delay in the differentiated term using the two-point Gaussian quadrature. If the delay is bigger than the perturbed parameter, the layer behaviour of the solution is destroyed, and the solution becomes oscillatory. With the help of a special type mesh, a numerical scheme consisting of a fitting parameter is developed to minimize the error and to control the layer structure in the solution. The scheme is studied for convergence. Compared with other methods in the literature, the maximum defects in the approach are tabularized to validate the competency of the numerical approach. In the suggested technique, we additionally focused on the effect of a large delay on the layer structure or oscillatory behaviour of the solutions using a special form of mesh with and without a fitting parameter. The effect of the fitting parameter is demonstrated in graphs to show its impact on the layer of the solution.
本文讨论了用两点高斯正交法求解微分项上有大时滞的奇摄动微分方程的计算方法。如果延迟大于扰动参数,则解的层行为被破坏,解变得振荡。利用一种特殊类型的网格,提出了一种由拟合参数组成的数值格式,以减小误差并控制解中的层结构。对该方案进行了收敛性研究。通过与文献中其他方法的比较,列举了该方法的最大缺陷,验证了数值方法的适用性。在建议的技术中,我们还关注了大延迟对解决方案的层结构或振荡行为的影响,使用特殊形式的网格,有或没有拟合参数。拟合参数的影响用图形表示,以显示其对解的层的影响。
{"title":"Computational Approach to Solving a Layered Behaviour Differential Equation with Large Delay Using Quadrature Scheme","authors":"Amala Pandi, Lalu Mudavath, Phaneendra Kolloju","doi":"10.2478/ijame-2022-0054","DOIUrl":"https://doi.org/10.2478/ijame-2022-0054","url":null,"abstract":"Abstract This paper deals with the computational approach to solving the singularly perturbed differential equation with a large delay in the differentiated term using the two-point Gaussian quadrature. If the delay is bigger than the perturbed parameter, the layer behaviour of the solution is destroyed, and the solution becomes oscillatory. With the help of a special type mesh, a numerical scheme consisting of a fitting parameter is developed to minimize the error and to control the layer structure in the solution. The scheme is studied for convergence. Compared with other methods in the literature, the maximum defects in the approach are tabularized to validate the competency of the numerical approach. In the suggested technique, we additionally focused on the effect of a large delay on the layer structure or oscillatory behaviour of the solutions using a special form of mesh with and without a fitting parameter. The effect of the fitting parameter is demonstrated in graphs to show its impact on the layer of the solution.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"498 1","pages":"117 - 137"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77059100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Joining of Carbon Steel AISI 1006 to Aluminum Alloy AA6061-T6 Via Friction Spot Joining Technique 碳钢AISI 1006与铝合金AA6061-T6的摩擦点焊接
Q3 Chemical Engineering Pub Date : 2022-12-01 DOI: 10.2478/ijame-2022-0046
M. Ridha, Mursal Luaibi Saad, I. Abdullah, Osamah Sabah Barrak, S. K. Hussein, A. Hussein
Abstract This work aims to join sheets of carbon steel to aluminum alloy AA6061. A lap joint arrangement was used with a joint lap area of dimensions * 25 25 mm. The joining procedure was carried out using a rotating tool of 10 mm shoulder diameter. Three process parameters, with three levels for each parameter, were selected to investigate their effects on joints quality. The parameter’s levels for each experiment were designed using the design of the experiment method (DOE). The results indicated that the two materials were joined by a mechanical interlock at an interface line, without formation of intermetallic compounds. The shear force of the joint reached an ultimate value of. 482kN. The shear force of the joint improved by increasing plunging depth of the tool. Samples of minimum shear force value failed by a pull-outing aluminum metal from the carbon steel specimen. Samples of higher shear force value exhibited a shear mode of fracture. Increasing the rotating speed and decreasing pre-heating increased the process temperature.
摘要本工作的目的是将碳钢片连接到铝合金AA6061上。采用搭接布置,搭接面积尺寸* 25 ~ 25mm。使用10毫米肩径的旋转工具进行连接过程。选择三个工艺参数,每个参数有三个层次,研究它们对接头质量的影响。各实验参数水平采用实验法设计(DOE)进行设计。结果表明,两种材料在界面线上通过机械联锁连接,未形成金属间化合物。节理剪力达到极限值为。482 kn。通过增加刀具切入深度,提高了接头的剪切力。通过从碳钢试样中拉出铝金属而失效的最小剪切力值试样。较高剪切力值的试样呈现剪切断裂模式。增加转速和减少预热可以提高工艺温度。
{"title":"Joining of Carbon Steel AISI 1006 to Aluminum Alloy AA6061-T6 Via Friction Spot Joining Technique","authors":"M. Ridha, Mursal Luaibi Saad, I. Abdullah, Osamah Sabah Barrak, S. K. Hussein, A. Hussein","doi":"10.2478/ijame-2022-0046","DOIUrl":"https://doi.org/10.2478/ijame-2022-0046","url":null,"abstract":"Abstract This work aims to join sheets of carbon steel to aluminum alloy AA6061. A lap joint arrangement was used with a joint lap area of dimensions * 25 25 mm. The joining procedure was carried out using a rotating tool of 10 mm shoulder diameter. Three process parameters, with three levels for each parameter, were selected to investigate their effects on joints quality. The parameter’s levels for each experiment were designed using the design of the experiment method (DOE). The results indicated that the two materials were joined by a mechanical interlock at an interface line, without formation of intermetallic compounds. The shear force of the joint reached an ultimate value of. 482kN. The shear force of the joint improved by increasing plunging depth of the tool. Samples of minimum shear force value failed by a pull-outing aluminum metal from the carbon steel specimen. Samples of higher shear force value exhibited a shear mode of fracture. Increasing the rotating speed and decreasing pre-heating increased the process temperature.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"53 1","pages":"1 - 12"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74042843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strouhal Number Effects on Dynamic Boundary Layer Evolution Over a Wedge Surface from Initial Flow to Steady Flow: Analytical Approach 斯特罗哈尔数对楔形表面从初始流动到稳定流动的动态边界层演化的影响:解析方法
Q3 Chemical Engineering Pub Date : 2022-12-01 DOI: 10.2478/ijame-2022-0048
M. Bachiri, A. Bouabdallah
Abstract The present work studies the effects of the physical parameter characterizing the laminar flow regime, namely the Strouhal number, on the evolution of the unsteady dynamic boundary-layer developed along a wedge surface. Similarity method is used to transform unsteady momentum equation to dimensionless form. Using superposition method between diffusion and convective flows solutions, an ad hoc velocity profile formula is proposed. The obtained results confirm perfectly the numerical data given by Blasius, Falkner-Skan and Williams-Rhyne for all Strouhal numbers. A new accurate analytical function of the local skin friction is established for all time values and for different wedge surface directions. In order to give further clarification on the flows evolutions from diffusion flow to convective flow, in the whole space domain, new skin friction coefficient curves are plotted for all Strouhal numbers and for different wedge surface directions.
摘要本文研究了表征层流流型的物理参数Strouhal数对沿楔面发展的非定常动力边界层演化的影响。采用相似法将非定常动量方程转化为无量纲形式。利用扩散流解和对流流解的叠加法,提出了一个特别的速度剖面公式。所得结果完全证实了Blasius、Falkner-Skan和Williams-Rhyne对所有Strouhal数给出的数值数据。建立了适用于所有时间值和不同楔面方向的新的精确的局部表面摩擦解析函数。为了进一步阐明扩散流动向对流流动的演变过程,在整个空间域中,绘制了所有Strouhal数和不同楔面方向的新的表面摩擦系数曲线。
{"title":"Strouhal Number Effects on Dynamic Boundary Layer Evolution Over a Wedge Surface from Initial Flow to Steady Flow: Analytical Approach","authors":"M. Bachiri, A. Bouabdallah","doi":"10.2478/ijame-2022-0048","DOIUrl":"https://doi.org/10.2478/ijame-2022-0048","url":null,"abstract":"Abstract The present work studies the effects of the physical parameter characterizing the laminar flow regime, namely the Strouhal number, on the evolution of the unsteady dynamic boundary-layer developed along a wedge surface. Similarity method is used to transform unsteady momentum equation to dimensionless form. Using superposition method between diffusion and convective flows solutions, an ad hoc velocity profile formula is proposed. The obtained results confirm perfectly the numerical data given by Blasius, Falkner-Skan and Williams-Rhyne for all Strouhal numbers. A new accurate analytical function of the local skin friction is established for all time values and for different wedge surface directions. In order to give further clarification on the flows evolutions from diffusion flow to convective flow, in the whole space domain, new skin friction coefficient curves are plotted for all Strouhal numbers and for different wedge surface directions.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"238 1","pages":"26 - 39"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72744295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Investigation of the Suspension Characteristics of the Line Model of the Vehicle Using the Taguchi Method 用田口法研究直线模型车辆的悬架特性
Q3 Chemical Engineering Pub Date : 2022-12-01 DOI: 10.2478/ijame-2022-0057
N. Stojanović, M. Jweeg, I. Grujić, M. Petrović, Sami Muhsen, O. Abdullah
Abstract It can be considered that the suspension system is one of the most important systems in the VEHICLE. Where it is responsible for the stability and balance of the vehicle’s structure on the roads and curves to ensure the comfort of passengers. Also, it absorbs the shocks resulting from the unevenness of the road and prevents it from reaching the wheelhouse. The influence of the suspension constructive parameters in order to obtain the smallest level of displacements of the sprung mass has been investigated. The following control parameters are the stiffness of the sprung, unsprung mass, and the damping of the sprung mass. The parameter which affects most displacements of the sprung mass was determined by applying the analysis of variance (ANOVA). The investigation was conducted using MATLAB/SIMULINK software, and a line model of a quarter of the vehicle was created. It was determined that the stiffness of sprung has the most significant influence on the displacement of the sprung-mass, which further affect the vehicle’s comfort.
悬架系统可以认为是车辆中最重要的系统之一。其中负责车辆结构在道路和弯道上的稳定性和平衡性,保证乘客的舒适性。此外,它还能吸收路面不平整造成的冲击,防止冲击到达驾驶室。为了得到簧载质量的最小位移水平,研究了悬架结构参数的影响。以下控制参数是簧载刚度、非簧载质量和簧载质量的阻尼。应用方差分析(ANOVA)确定了对簧载质量位移影响最大的参数。利用MATLAB/SIMULINK软件进行调查,建立了四分之一车身的直线模型。结果表明,弹簧刚度对弹簧质量位移的影响最为显著,进而影响车辆的舒适性。
{"title":"An Investigation of the Suspension Characteristics of the Line Model of the Vehicle Using the Taguchi Method","authors":"N. Stojanović, M. Jweeg, I. Grujić, M. Petrović, Sami Muhsen, O. Abdullah","doi":"10.2478/ijame-2022-0057","DOIUrl":"https://doi.org/10.2478/ijame-2022-0057","url":null,"abstract":"Abstract It can be considered that the suspension system is one of the most important systems in the VEHICLE. Where it is responsible for the stability and balance of the vehicle’s structure on the roads and curves to ensure the comfort of passengers. Also, it absorbs the shocks resulting from the unevenness of the road and prevents it from reaching the wheelhouse. The influence of the suspension constructive parameters in order to obtain the smallest level of displacements of the sprung mass has been investigated. The following control parameters are the stiffness of the sprung, unsprung mass, and the damping of the sprung mass. The parameter which affects most displacements of the sprung mass was determined by applying the analysis of variance (ANOVA). The investigation was conducted using MATLAB/SIMULINK software, and a line model of a quarter of the vehicle was created. It was determined that the stiffness of sprung has the most significant influence on the displacement of the sprung-mass, which further affect the vehicle’s comfort.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"74 1","pages":"170 - 178"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83745037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Numerical Approximation of 2D Coupled Burgers’ Equation Using Modified Cubic Trigonometric B-Spline Differential Quadrature Method 二维耦合Burgers方程的修正三次三角b样条微分积分法数值逼近
Q3 Chemical Engineering Pub Date : 2022-08-29 DOI: 10.2478/ijame-2022-0037
Mamta Kapoor, V. Joshi
Abstract In the present paper, trigonometric B-spline DQM is applied to get the approximated solution of coupled 2D non-linear Burgers’ equation. This technique, named modified cubic trigonometric B-spline DQM, has been used to obtain accurate and effective numerical approximations of the above-mentioned partial differential equation. For checking the compatibility of results, different types of test examples are discussed. A comparison is done between L2 and L∞ error norms with the previous, present results and with the exact solution. The resultant set of ODEs has been solved by employing the SSP RK 43 method. It is observed that the obtained results are improved compared to the previous numerical results in the literature.
摘要本文应用三角b样条DQM方法,得到二维非线性耦合Burgers方程的近似解。这种被称为修正三次三角b样条DQM的方法已被用于对上述偏微分方程进行精确有效的数值逼近。为了检查结果的兼容性,讨论了不同类型的测试实例。比较了L2和L∞误差范数与以前、现在的结果和精确解。利用SSP rk43方法求解得到的ode集合。与以往文献中的数值结果相比,所得到的结果有了很大的改进。
{"title":"A Numerical Approximation of 2D Coupled Burgers’ Equation Using Modified Cubic Trigonometric B-Spline Differential Quadrature Method","authors":"Mamta Kapoor, V. Joshi","doi":"10.2478/ijame-2022-0037","DOIUrl":"https://doi.org/10.2478/ijame-2022-0037","url":null,"abstract":"Abstract In the present paper, trigonometric B-spline DQM is applied to get the approximated solution of coupled 2D non-linear Burgers’ equation. This technique, named modified cubic trigonometric B-spline DQM, has been used to obtain accurate and effective numerical approximations of the above-mentioned partial differential equation. For checking the compatibility of results, different types of test examples are discussed. A comparison is done between L2 and L∞ error norms with the previous, present results and with the exact solution. The resultant set of ODEs has been solved by employing the SSP RK 43 method. It is observed that the obtained results are improved compared to the previous numerical results in the literature.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"84 1","pages":"79 - 102"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79360174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemically Reacting Jeffrey Fluid Flow Over a Deformable Porous Layer with Entropy Generation Analysis 化学反应杰弗里流体流过可变形多孔层与熵生成分析
Q3 Chemical Engineering Pub Date : 2022-08-29 DOI: 10.2478/ijame-2022-0034
U. Das
Abstract Entropy generation of a steady Jeffrey fluid flow over a deformable vertical porous layer is analysed with consideration of a first-order chemical reaction and thermal diffusion. The porous material is modelled as a homogeneous binary mixture of fluid and solid phases where each point in the binary mixture is occupied concurrently by the fluid and solid. The combined phenomenon of solid deformation and fluid movement is taken into account. The impact of relevant parameters on the fluid velocity, solid displacement, temperature and concentration profiles is discussed. It is noticed that the Jeffrey fluid parameter enhances the entropy generation number, fluid velocity and solid displacement profiles, but a reverse effect is seen for the Bejan number. Further, entropy generation, fluid velocity and solid displacement reduce due to the higher estimates of the chemical reaction parameter, while the Bejan number enhances.
考虑一阶化学反应和热扩散,分析了Jeffrey流体在可变形垂直多孔层上的稳态熵生成。多孔材料被建模为流体和固相的均匀二元混合物,其中二元混合物中的每个点同时被流体和固体占据。考虑了固体变形和流体运动的联合现象。讨论了相关参数对流体速度、固相位移、温度和浓度分布的影响。注意到Jeffrey流体参数对熵产数、流体速度和固体位移剖面有增强作用,而Bejan流体参数对熵产数有相反作用。此外,熵产、流体速度和固体位移由于化学反应参数估定值的提高而减少,而Bejan数增加。
{"title":"Chemically Reacting Jeffrey Fluid Flow Over a Deformable Porous Layer with Entropy Generation Analysis","authors":"U. Das","doi":"10.2478/ijame-2022-0034","DOIUrl":"https://doi.org/10.2478/ijame-2022-0034","url":null,"abstract":"Abstract Entropy generation of a steady Jeffrey fluid flow over a deformable vertical porous layer is analysed with consideration of a first-order chemical reaction and thermal diffusion. The porous material is modelled as a homogeneous binary mixture of fluid and solid phases where each point in the binary mixture is occupied concurrently by the fluid and solid. The combined phenomenon of solid deformation and fluid movement is taken into account. The impact of relevant parameters on the fluid velocity, solid displacement, temperature and concentration profiles is discussed. It is noticed that the Jeffrey fluid parameter enhances the entropy generation number, fluid velocity and solid displacement profiles, but a reverse effect is seen for the Bejan number. Further, entropy generation, fluid velocity and solid displacement reduce due to the higher estimates of the chemical reaction parameter, while the Bejan number enhances.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"29 1","pages":"36 - 48"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85961608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MHD Free Convective Heat and Mass Transfer Flow from a Vertical Porous Surface with Variable Thermal Conductivity, Variable Mass Diffusivity and Thermal Diffusion Including Viscous Dissipation and Chemical Reaction 具有可变导热系数、可变质量扩散率和热扩散(包括粘性耗散和化学反应)的垂直多孔表面的MHD自由对流传热和传质流动
Q3 Chemical Engineering Pub Date : 2022-08-29 DOI: 10.2478/ijame-2022-0040
J. Phakirappa, S. Priyanka, P. Veena, V. Pravin
Abstract An analysis is carried out to study chemically reactive, viscous dissipative effects of an incompressible and electrically conducting fluid with MHD free convection adjacent to a vertical surface with variable thermal conductivity (VTD) and variable mass diffusivity (VMD). An approximate numerical solution for the steady laminar boundary layer flow over a wall of the surface in the presence of species concentration and thermal mass diffusion has been studied. Using numerical techniques the governing boundary layer equations are solved to get the exact solution. Numerical calculations are carried out for different values of dimensionless parameters. The results are exhibited through various graphs and it is observed from the analysis of the results that the velocity field is appreciably influenced by the magnetic effect, porous effect, chemical reaction and buoyancy ratio between the species and thermal diffusion at the wall of the surface.
摘要研究了一种不可压缩导电流体在变导热系数(VTD)和变质量扩散系数(VMD)垂直表面附近具有MHD自由对流的化学反应性、粘性耗散效应。本文研究了存在物质浓度和热质量扩散的壁面上的稳定层流边界层流动的近似数值解。利用数值方法对控制边界层方程进行了求解,得到了精确解。对不同的无量纲参数值进行了数值计算。从分析结果可以看出,磁效应、多孔效应、化学反应、物质间的浮力比以及表面壁面的热扩散对速度场有明显的影响。
{"title":"MHD Free Convective Heat and Mass Transfer Flow from a Vertical Porous Surface with Variable Thermal Conductivity, Variable Mass Diffusivity and Thermal Diffusion Including Viscous Dissipation and Chemical Reaction","authors":"J. Phakirappa, S. Priyanka, P. Veena, V. Pravin","doi":"10.2478/ijame-2022-0040","DOIUrl":"https://doi.org/10.2478/ijame-2022-0040","url":null,"abstract":"Abstract An analysis is carried out to study chemically reactive, viscous dissipative effects of an incompressible and electrically conducting fluid with MHD free convection adjacent to a vertical surface with variable thermal conductivity (VTD) and variable mass diffusivity (VMD). An approximate numerical solution for the steady laminar boundary layer flow over a wall of the surface in the presence of species concentration and thermal mass diffusion has been studied. Using numerical techniques the governing boundary layer equations are solved to get the exact solution. Numerical calculations are carried out for different values of dimensionless parameters. The results are exhibited through various graphs and it is observed from the analysis of the results that the velocity field is appreciably influenced by the magnetic effect, porous effect, chemical reaction and buoyancy ratio between the species and thermal diffusion at the wall of the surface.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"8 1","pages":"127 - 136"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76107560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Testing of Formed Joints on a Designed Prototype Station 成形接头在设计原型台上的试验
Q3 Chemical Engineering Pub Date : 2022-08-29 DOI: 10.2478/ijame-2022-0045
Nikodem Wróbel, Mateusz Franka, Michał Rejek, Zhixiong Li, J. Królczyk, M. Sliwinski
Abstract In presented paper perform prototype machine which consist of two independent motion axis equipped with force sensors. Used force sensors provide control of forming connection. Special design of the machine provide to make tensile strength test on it. Prepared nine samples to carried out tests, which revealed the influence between change of jaws displacement during plastic deformation and strength of that joint. Created prototype stand base on two independent drive units allow to make that connection possible. Choosing right parameters leads to generate joints which are more than twice stronger than basic sample reaching more than 920N.
本文设计了由两个独立运动轴组成的装有力传感器的样机。使用力传感器控制成形连接。特殊设计的机器可对其进行拉伸强度试验。制备了9个试件进行试验,揭示了接头塑性变形时颌部位移的变化对接头强度的影响。在两个独立的驱动单元上创建了原型支架,使连接成为可能。选择合适的参数,生成的接头强度达到920N以上,是基本试样的2倍以上。
{"title":"Testing of Formed Joints on a Designed Prototype Station","authors":"Nikodem Wróbel, Mateusz Franka, Michał Rejek, Zhixiong Li, J. Królczyk, M. Sliwinski","doi":"10.2478/ijame-2022-0045","DOIUrl":"https://doi.org/10.2478/ijame-2022-0045","url":null,"abstract":"Abstract In presented paper perform prototype machine which consist of two independent motion axis equipped with force sensors. Used force sensors provide control of forming connection. Special design of the machine provide to make tensile strength test on it. Prepared nine samples to carried out tests, which revealed the influence between change of jaws displacement during plastic deformation and strength of that joint. Created prototype stand base on two independent drive units allow to make that connection possible. Choosing right parameters leads to generate joints which are more than twice stronger than basic sample reaching more than 920N.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"257 1","pages":"212 - 223"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90998140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Reanalysis Methods in Structural Mechanics 再分析方法在结构力学中的应用
Q3 Chemical Engineering Pub Date : 2022-08-29 DOI: 10.2478/ijame-2022-0035
I. Delyová, P. Frankovský, J. Bocko, P. Sivák, R. Kurimský
Abstract When designing structures, it is often necessary to re-analyse a structure that is different in some parts from the original one. As real structures are often complex, their analysis is therefore very challenging. In such cases, reanalysis methods are advantageously used. The aim of this paper is to approach the problem of solving the constructions using reanalysis method in which the time taken in solving algebraic equations is reduced. In particular, the purpose of this work is to demonstrate on a chosen system the time savings and the advantages of the chosen direct efficient reanalysis method for a given design problem. A basic condition for meeting these criteria is the modernization of computational procedures in the mechanics of compliant solids.
摘要在进行结构设计时,往往需要对结构进行重新分析,因为结构的某些部分与原结构有所不同。由于真实的结构通常是复杂的,因此它们的分析非常具有挑战性。在这种情况下,有利地使用再分析方法。本文的目的是探讨用再分析方法求解结构的问题,这种方法可以减少求解代数方程所花费的时间。特别地,这项工作的目的是在一个选定的系统上展示所选择的直接有效的再分析方法对给定设计问题的时间节省和优势。满足这些标准的一个基本条件是柔性固体力学计算程序的现代化。
{"title":"Application of Reanalysis Methods in Structural Mechanics","authors":"I. Delyová, P. Frankovský, J. Bocko, P. Sivák, R. Kurimský","doi":"10.2478/ijame-2022-0035","DOIUrl":"https://doi.org/10.2478/ijame-2022-0035","url":null,"abstract":"Abstract When designing structures, it is often necessary to re-analyse a structure that is different in some parts from the original one. As real structures are often complex, their analysis is therefore very challenging. In such cases, reanalysis methods are advantageously used. The aim of this paper is to approach the problem of solving the constructions using reanalysis method in which the time taken in solving algebraic equations is reduced. In particular, the purpose of this work is to demonstrate on a chosen system the time savings and the advantages of the chosen direct efficient reanalysis method for a given design problem. A basic condition for meeting these criteria is the modernization of computational procedures in the mechanics of compliant solids.","PeriodicalId":37871,"journal":{"name":"International Journal of Applied Mechanics and Engineering","volume":"26 1","pages":"49 - 62"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73098199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
International Journal of Applied Mechanics and Engineering
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1