Pub Date : 2024-02-25DOI: 10.1177/23977914241232161
Sumit Dubal, Sachin S. Chavan, Gaurav Lohar, P. Lokhande, Udayabhaskar Rednam, Deepak Kumar
The versatile properties of electrospun carbon nanofibers gaining attention for electrode materials for supercapacitors. The heat treatment process of stabilization played an important role before the carbonization process in electrode fabrication. In the present study, electrospun stabilized polyacrylonitrile nanofiber (St PAN) and carbonized Polyacrylonitrile nanofiber (CNF) at minimum temperature were used as active mass for supercapacitor electrodes. Stabilized CNF nanofiber sample showed a reduction in nanofiber diameter with increased carbon percentage. XRD results showed increased crystallinity in the CNF sample as compared with the Stabilized PAN sample. Electrochemical characterization was performed to measure specific capacitance and to analyze the charge storage mechanism. The proportion of capacitive and diffusion-controlled contributions to energy storage was estimated using Dunn’s model. The results obtained demonstrated that, in comparison to the St PAN electrode, the CNF electrode exhibited a greater capacitive-controlled contribution. The CNF sample has shown an increased capacitive contribution of 82.3% as compared with the St PAN sample. This work provides a method for making electrospun carbon nanofiber-based electrodes as well as a methodical methodology for examining the charge storage process.
电纺纳米碳纤维作为超级电容器的电极材料，其多功能特性日益受到关注。在电极制造过程中，碳化前的热处理稳定化过程起着重要作用。在本研究中，电纺稳定聚丙烯腈纳米纤维（St PAN）和在最低温度下碳化的聚丙烯腈纳米纤维（CNF）被用作超级电容器电极的活性物质。稳定的 CNF 纳米纤维样品显示，随着碳比例的增加，纳米纤维直径减小。XRD 结果显示，与稳定 PAN 样品相比，CNF 样品的结晶度有所提高。电化学表征用于测量比电容和分析电荷存储机制。利用邓恩模型估算了电容和扩散控制对能量存储的贡献比例。结果表明，与 St PAN 电极相比，CNF 电极的电容控制贡献更大。与 St PAN 样品相比，CNF 样品的电容贡献增加了 82.3%。这项研究提供了一种制作电纺碳纳米纤维电极的方法，以及一种检测电荷存储过程的方法学。
{"title":"Polyacrylonitrile-based carbon nanofiber electrode fabricated via electrospun for supercapacitor application","authors":"Sumit Dubal, Sachin S. Chavan, Gaurav Lohar, P. Lokhande, Udayabhaskar Rednam, Deepak Kumar","doi":"10.1177/23977914241232161","DOIUrl":"https://doi.org/10.1177/23977914241232161","url":null,"abstract":"The versatile properties of electrospun carbon nanofibers gaining attention for electrode materials for supercapacitors. The heat treatment process of stabilization played an important role before the carbonization process in electrode fabrication. In the present study, electrospun stabilized polyacrylonitrile nanofiber (St PAN) and carbonized Polyacrylonitrile nanofiber (CNF) at minimum temperature were used as active mass for supercapacitor electrodes. Stabilized CNF nanofiber sample showed a reduction in nanofiber diameter with increased carbon percentage. XRD results showed increased crystallinity in the CNF sample as compared with the Stabilized PAN sample. Electrochemical characterization was performed to measure specific capacitance and to analyze the charge storage mechanism. The proportion of capacitive and diffusion-controlled contributions to energy storage was estimated using Dunn’s model. The results obtained demonstrated that, in comparison to the St PAN electrode, the CNF electrode exhibited a greater capacitive-controlled contribution. The CNF sample has shown an increased capacitive contribution of 82.3% as compared with the St PAN sample. This work provides a method for making electrospun carbon nanofiber-based electrodes as well as a methodical methodology for examining the charge storage process.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433358","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}
The present research investigated the lubricating performance of ZnO, SiO2, and WS2 nanoparticles as oil additives applied on steel frictional pairs. The study consisted of two stages. In first stage, the lubricating properties of nanofluids were examined using the various nanoparticle concentrations. It was obtained that the 3wt% ZnO, 5wt% SiO2, and 3wt% WS2 nanofluids showed the best performance. In second stage, an orthogonal test matrix was designed to understand the influences of load, sliding frequency and surface roughness on the lubricating behavior of the nanofluids. It was found that the frequency and load had the most significant effects on the friction reduction and anti-wear properties of ZnO, SiO2, and WS2 nanofluids. By using scanning electron microscopy and energy dispersive X-ray spectroscopy for potential mechanisms. It was found that the nanoparticles could be physically embedded, and adhered to the worn areas to form tribo-films resulting in improved tribological performance.
{"title":"Sliding tribological properties of nano-sized ceramic particles as oil-based lubricant additives","authors":"Bingxu Wang, Renxu Wang, Xinbo Xiang, Slim Dailamy Zarooq, Yongfeng Yuan, Shao-yi Guo, G. Barber","doi":"10.1177/23977914241231888","DOIUrl":"https://doi.org/10.1177/23977914241231888","url":null,"abstract":"The present research investigated the lubricating performance of ZnO, SiO2, and WS2 nanoparticles as oil additives applied on steel frictional pairs. The study consisted of two stages. In first stage, the lubricating properties of nanofluids were examined using the various nanoparticle concentrations. It was obtained that the 3wt% ZnO, 5wt% SiO2, and 3wt% WS2 nanofluids showed the best performance. In second stage, an orthogonal test matrix was designed to understand the influences of load, sliding frequency and surface roughness on the lubricating behavior of the nanofluids. It was found that the frequency and load had the most significant effects on the friction reduction and anti-wear properties of ZnO, SiO2, and WS2 nanofluids. By using scanning electron microscopy and energy dispersive X-ray spectroscopy for potential mechanisms. It was found that the nanoparticles could be physically embedded, and adhered to the worn areas to form tribo-films resulting in improved tribological performance.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960159","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}
Pub Date : 2024-02-16DOI: 10.1177/23977914241231891
Naveed Ahsan, M. N. Aslam, Muhammad Naveed Khan, Emad A. Az-Zo’bi
The aim of current investigation is to explore the two-dimensional Darcy flow of second grade fluid with homogenous and heterogeneous reactions toward a porous curved stretching surface. The thermal features the bioconvective flow are observed with the impact of joule heating, nonlinear thermal radiation, and non-uniform heat source/sink. The thermal stratification conditions are imposed on the boundary of the surface with magnetic field which is normal to surface. Flow model momentum and energy equations are converted into the system of nonlinear ordinary differential equations with some appropriative transformation. These nonlinear equations are tackled numerically with the utilization of Bvp4c approach. The graphical and tabulated results are obtained and discussed thoroughly. It is noticed that for the larger Darcy-Forchheimer number F, porosity parameter [Formula: see text], and Hartman number M, the fluid velocity decreases, while curvature parameter [Formula: see text] exhibits the reverse trend on the velocity field. Further, increment in the fluid temperature is observed by the escalation of the Hartman number M and Eckert number Ec, because more resistance produces larger energy in the fluid. This research contributes to understanding the complex interplay of parameters governing fluid dynamics and thermal behavior near porous curved surfaces, shedding light on the impact of various factors on velocity and temperature distributions.
本次研究的目的是探索具有同质和异质反应的二级流体流向多孔弯曲拉伸表面的二维达西流。在焦耳加热、非线性热辐射和非均匀热源/沉的影响下，观察了生物对流的热特征。在表面边界上施加了热分层条件，磁场为表面法线。通过一些适当的变换，流动模型动量和能量方程被转换为非线性常微分方程系统。利用 Bvp4c 方法对这些非线性方程进行数值处理。得到的结果以图形和表格形式显示，并进行了深入讨论。我们注意到，当达西-福克海默数 F、孔隙度参数[计算公式：见正文]和哈特曼数 M 越大时，流体速度越小，而曲率参数[计算公式：见正文]对速度场的影响呈相反趋势。此外，通过哈特曼数 M 和埃克特数 Ec 的增大可以观察到流体温度的升高，因为更多的阻力会在流体中产生更大的能量。这项研究有助于理解多孔曲面附近流体动力学和热行为参数之间复杂的相互作用，阐明各种因素对速度和温度分布的影响。
{"title":"Bioconvective flow analysis of non-Newtonian fluid over a porous curved stretching surface","authors":"Naveed Ahsan, M. N. Aslam, Muhammad Naveed Khan, Emad A. Az-Zo’bi","doi":"10.1177/23977914241231891","DOIUrl":"https://doi.org/10.1177/23977914241231891","url":null,"abstract":"The aim of current investigation is to explore the two-dimensional Darcy flow of second grade fluid with homogenous and heterogeneous reactions toward a porous curved stretching surface. The thermal features the bioconvective flow are observed with the impact of joule heating, nonlinear thermal radiation, and non-uniform heat source/sink. The thermal stratification conditions are imposed on the boundary of the surface with magnetic field which is normal to surface. Flow model momentum and energy equations are converted into the system of nonlinear ordinary differential equations with some appropriative transformation. These nonlinear equations are tackled numerically with the utilization of Bvp4c approach. The graphical and tabulated results are obtained and discussed thoroughly. It is noticed that for the larger Darcy-Forchheimer number F, porosity parameter [Formula: see text], and Hartman number M, the fluid velocity decreases, while curvature parameter [Formula: see text] exhibits the reverse trend on the velocity field. Further, increment in the fluid temperature is observed by the escalation of the Hartman number M and Eckert number Ec, because more resistance produces larger energy in the fluid. This research contributes to understanding the complex interplay of parameters governing fluid dynamics and thermal behavior near porous curved surfaces, shedding light on the impact of various factors on velocity and temperature distributions.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960904","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}
Pub Date : 2024-02-14DOI: 10.1177/23977914241227593
R. Ambigai, S. Prabhu
This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.
{"title":"Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites","authors":"R. Ambigai, S. Prabhu","doi":"10.1177/23977914241227593","DOIUrl":"https://doi.org/10.1177/23977914241227593","url":null,"abstract":"This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777667","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}
Pub Date : 2024-02-14DOI: 10.1177/23977914241227593
R. Ambigai, S. Prabhu
This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.
{"title":"Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites","authors":"R. Ambigai, S. Prabhu","doi":"10.1177/23977914241227593","DOIUrl":"https://doi.org/10.1177/23977914241227593","url":null,"abstract":"This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139837229","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}
Pub Date : 2024-02-07DOI: 10.1177/23977914231215229
E. Rahimi, M. Sadeghian, M. E. Golmakani
In the current context, the nonlinear bending examination of a carbon nanotube reinforced composite (CNTRC) shell exposed to mechanical loading using the first-order shear deformation shell model via the dynamic relaxation (DR) procedure, is perused. The composite shell is assumed to be reinforced in the longitudinal axis. The curved morphology distribution of CNTs is considered to be functionally graded (FG) or uniform along the shell thickness. Mechanical properties of the constituents are gathered based on the modified rule of the mixture. For verification, the present numeric outcomes are compared with available references and ABAQUS finite element package. Finally, the roles of effective items including carbon nanotubes (CNTs) distributions, thickness-to-radius and length-to-radius ratios, boundary conditions, and the volume fraction of CNTs are investigated on the maximum non-dimension deflection.
{"title":"Nonlinear bending examination of nanocomposite cylindrical shell exposed to mechanical loads using dynamic relaxation method","authors":"E. Rahimi, M. Sadeghian, M. E. Golmakani","doi":"10.1177/23977914231215229","DOIUrl":"https://doi.org/10.1177/23977914231215229","url":null,"abstract":"In the current context, the nonlinear bending examination of a carbon nanotube reinforced composite (CNTRC) shell exposed to mechanical loading using the first-order shear deformation shell model via the dynamic relaxation (DR) procedure, is perused. The composite shell is assumed to be reinforced in the longitudinal axis. The curved morphology distribution of CNTs is considered to be functionally graded (FG) or uniform along the shell thickness. Mechanical properties of the constituents are gathered based on the modified rule of the mixture. For verification, the present numeric outcomes are compared with available references and ABAQUS finite element package. Finally, the roles of effective items including carbon nanotubes (CNTs) distributions, thickness-to-radius and length-to-radius ratios, boundary conditions, and the volume fraction of CNTs are investigated on the maximum non-dimension deflection.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139796338","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}
Pub Date : 2024-02-07DOI: 10.1177/23977914231215229
E. Rahimi, M. Sadeghian, M. E. Golmakani
In the current context, the nonlinear bending examination of a carbon nanotube reinforced composite (CNTRC) shell exposed to mechanical loading using the first-order shear deformation shell model via the dynamic relaxation (DR) procedure, is perused. The composite shell is assumed to be reinforced in the longitudinal axis. The curved morphology distribution of CNTs is considered to be functionally graded (FG) or uniform along the shell thickness. Mechanical properties of the constituents are gathered based on the modified rule of the mixture. For verification, the present numeric outcomes are compared with available references and ABAQUS finite element package. Finally, the roles of effective items including carbon nanotubes (CNTs) distributions, thickness-to-radius and length-to-radius ratios, boundary conditions, and the volume fraction of CNTs are investigated on the maximum non-dimension deflection.
{"title":"Nonlinear bending examination of nanocomposite cylindrical shell exposed to mechanical loads using dynamic relaxation method","authors":"E. Rahimi, M. Sadeghian, M. E. Golmakani","doi":"10.1177/23977914231215229","DOIUrl":"https://doi.org/10.1177/23977914231215229","url":null,"abstract":"In the current context, the nonlinear bending examination of a carbon nanotube reinforced composite (CNTRC) shell exposed to mechanical loading using the first-order shear deformation shell model via the dynamic relaxation (DR) procedure, is perused. The composite shell is assumed to be reinforced in the longitudinal axis. The curved morphology distribution of CNTs is considered to be functionally graded (FG) or uniform along the shell thickness. Mechanical properties of the constituents are gathered based on the modified rule of the mixture. For verification, the present numeric outcomes are compared with available references and ABAQUS finite element package. Finally, the roles of effective items including carbon nanotubes (CNTs) distributions, thickness-to-radius and length-to-radius ratios, boundary conditions, and the volume fraction of CNTs are investigated on the maximum non-dimension deflection.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139855803","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}
Pub Date : 2024-02-06DOI: 10.1177/23977914231214860
B. Jha, P. Malgwi
The present analysis is concerned with the effect of magnetic field inclination on transient MHD flow of Newtonian viscous fluid in a vertical microchannel with the consideration of Hall and ion slip currents as well as induced magnetic field effects. Obtained dimensional partial differential equation are rendered dimensionless by employing suitable parameters and thereafter solved numerically in MATLAB. Relevant actions of parameters on different flow features are depicted explicitly and also using Tables for various applicable parameters. Analysis in this direction is relevant in many MHD controlled applications. Results obtained from the present analysis shows that at the early stages of time and in the simultaneous occurrence of inclined magnetic field as well as Hall and ion slip currents, velocity and induced magnetic field behavior are found to be oscillatory all through the microchannel domain.
{"title":"Computational analysis on transient MHD free convection flow in a microchannel in presence of inclined magnetic field with Hall and ion slip current","authors":"B. Jha, P. Malgwi","doi":"10.1177/23977914231214860","DOIUrl":"https://doi.org/10.1177/23977914231214860","url":null,"abstract":"The present analysis is concerned with the effect of magnetic field inclination on transient MHD flow of Newtonian viscous fluid in a vertical microchannel with the consideration of Hall and ion slip currents as well as induced magnetic field effects. Obtained dimensional partial differential equation are rendered dimensionless by employing suitable parameters and thereafter solved numerically in MATLAB. Relevant actions of parameters on different flow features are depicted explicitly and also using Tables for various applicable parameters. Analysis in this direction is relevant in many MHD controlled applications. Results obtained from the present analysis shows that at the early stages of time and in the simultaneous occurrence of inclined magnetic field as well as Hall and ion slip currents, velocity and induced magnetic field behavior are found to be oscillatory all through the microchannel domain.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139800427","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}
Pub Date : 2024-02-06DOI: 10.1177/23977914231217929
Usman S. Rilwan, M. Oni, H. Jibril, B. Jha
This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.
{"title":"Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling","authors":"Usman S. Rilwan, M. Oni, H. Jibril, B. Jha","doi":"10.1177/23977914231217929","DOIUrl":"https://doi.org/10.1177/23977914231217929","url":null,"abstract":"This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139799425","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}
Pub Date : 2024-02-06DOI: 10.1177/23977914231217929
Usman S. Rilwan, M. Oni, H. Jibril, B. Jha
This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.
{"title":"Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling","authors":"Usman S. Rilwan, M. Oni, H. Jibril, B. Jha","doi":"10.1177/23977914231217929","DOIUrl":"https://doi.org/10.1177/23977914231217929","url":null,"abstract":"This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859209","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}
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