Pub Date : 2022-11-01DOI: 10.1177/23977914221127527
Ameen Abdelrahman, F. Erchiqui, Mourd Nedil, Siaj Mohamed
In this work, the preparation and the physical evaluation of a series of miscible 0.2 M solutions in 50/50 volume ratios were addressed. A total of five solutions comprised of plain electrolyte/graphene, plain electrolyte/graphene-ethylene Glycol, plain electrolyte/graphene-poly-ethylene glycol, plain electrolyte/graphene-glycerol, and plain electrolyte/Graphene–Polyethylenimine. were assembled with Ag, and copper nanoparticles. The physical properties were studied by electrochemical impedance spectroscopy, solution conductivity calculations, and viscosity and flexibility measurements, particle size distribution analyses. Surface morphology characterizations were done by transmission electron microscopy. A comparative approach of the physical properties between the five solutions serves as a guide to select the most appropriate fluid applicable to the upcoming device.
{"title":"In situ- preparation and estimation of the physical characterization of Nanofluidic solution and its application","authors":"Ameen Abdelrahman, F. Erchiqui, Mourd Nedil, Siaj Mohamed","doi":"10.1177/23977914221127527","DOIUrl":"https://doi.org/10.1177/23977914221127527","url":null,"abstract":"In this work, the preparation and the physical evaluation of a series of miscible 0.2 M solutions in 50/50 volume ratios were addressed. A total of five solutions comprised of plain electrolyte/graphene, plain electrolyte/graphene-ethylene Glycol, plain electrolyte/graphene-poly-ethylene glycol, plain electrolyte/graphene-glycerol, and plain electrolyte/Graphene–Polyethylenimine. were assembled with Ag, and copper nanoparticles. The physical properties were studied by electrochemical impedance spectroscopy, solution conductivity calculations, and viscosity and flexibility measurements, particle size distribution analyses. Surface morphology characterizations were done by transmission electron microscopy. A comparative approach of the physical properties between the five solutions serves as a guide to select the most appropriate fluid applicable to the upcoming device.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72513777","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 : 2022-10-07DOI: 10.1177/23977914221127735
S. Mukherjee, Shanta Chakrabarty, P. Mishra, P. Chaudhuri
Nanofluids are regarded as promising heat transfer fluid due to their ultrafast cooling capability. However, stability analysis of nanofluids is very critical before its application in heat transfer .The present paper reports about an investigation on the stability of water-based Al2O3 and TiO2 nanofluids at ambient temperature. Nanoparticles, namely Al2O3 and TiO2 at different concentrations of 1, 0.5, 0.1, 0.05, and 0.01 wt.% respectively were directly dispersed in water without adding any dispersant and placed in a static container to observe gravitation settling. Change of sedimentation height with respect to time was measured using the sedimentation photograph capturing method. DLS (Dynamic Light Scattering) and zeta potential analysis were also executed to examine the stability of nanofluids. The results show that the visualization method, DLS and zeta potential analysis are in good correspondence to each other. Sedimentation velocity increases with an increase in nanoparticle concentration and aging. Brownian motion of nanoparticles resist the sedimentation in nanofluids. It is observed that TiO2nanofluid is more stable as compared to Al2O3 nanofluid due to its smaller particle size. Finally authors recommend smaller particle size, optimized sonication time, low nanoparticle concentration and use of surfactant to obtain better dispersion stability of nanofluids
{"title":"Stability and sedimentation characteristics of water based Al2O3 and TiO2 nanofluids","authors":"S. Mukherjee, Shanta Chakrabarty, P. Mishra, P. Chaudhuri","doi":"10.1177/23977914221127735","DOIUrl":"https://doi.org/10.1177/23977914221127735","url":null,"abstract":"Nanofluids are regarded as promising heat transfer fluid due to their ultrafast cooling capability. However, stability analysis of nanofluids is very critical before its application in heat transfer .The present paper reports about an investigation on the stability of water-based Al2O3 and TiO2 nanofluids at ambient temperature. Nanoparticles, namely Al2O3 and TiO2 at different concentrations of 1, 0.5, 0.1, 0.05, and 0.01 wt.% respectively were directly dispersed in water without adding any dispersant and placed in a static container to observe gravitation settling. Change of sedimentation height with respect to time was measured using the sedimentation photograph capturing method. DLS (Dynamic Light Scattering) and zeta potential analysis were also executed to examine the stability of nanofluids. The results show that the visualization method, DLS and zeta potential analysis are in good correspondence to each other. Sedimentation velocity increases with an increase in nanoparticle concentration and aging. Brownian motion of nanoparticles resist the sedimentation in nanofluids. It is observed that TiO2nanofluid is more stable as compared to Al2O3 nanofluid due to its smaller particle size. Finally authors recommend smaller particle size, optimized sonication time, low nanoparticle concentration and use of surfactant to obtain better dispersion stability of nanofluids","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77437314","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 : 2022-10-03DOI: 10.1177/23977914221127733
Mohammad Pakray, Sajad Hayati, S. K. Jalali
In the present study, mechanical properties optimization is investigated for an Al-Al2O3 composite nanostructure. The Al-Al2O3 composite nanostructure is considered an Aluminum nanowire reinforced by spherical Al2O3 particles. The structure tensile test is simulated via molecular dynamics simulation using LAMMPS. The mechanical properties of the composite are extracted from the obtained stress-strain curve of the composite. The important mechanical properties include maximum stress and toughness. An optimization process is then applied to maximize the mechanical properties of the composite via metaheuristic optimization algorithms including Genetic Algorithm (GA), Ant Colony (ACO), and Grey Wolf Optimizer (GWO). Since the studied nanostructure is mono crystal, the reinforcing mechanism differs from that of a grained macro material. Therefore, the optimization variables are not confined to size and volume fraction but they also include the location of the particles. The optimization is performed for 0.05 and 0.10 volume fractions and different particle sizes with respect to the location of particles. Applying the optimization process, the mechanical properties of the studied composite nanowire are substantially improved for tensile loading. The results reveal that the placement of the particles has a considerable effect on the improvement of mechanical characteristics. At last, a pattern is presented for the placement of particles to achieve the highest tensile characteristics of Al-Al2O3 composite nanowires.
{"title":"Mechanical optimization of an Al-Al2O3 composite nanowire via molecular dynamics simulation and metaheuristic optimization","authors":"Mohammad Pakray, Sajad Hayati, S. K. Jalali","doi":"10.1177/23977914221127733","DOIUrl":"https://doi.org/10.1177/23977914221127733","url":null,"abstract":"In the present study, mechanical properties optimization is investigated for an Al-Al2O3 composite nanostructure. The Al-Al2O3 composite nanostructure is considered an Aluminum nanowire reinforced by spherical Al2O3 particles. The structure tensile test is simulated via molecular dynamics simulation using LAMMPS. The mechanical properties of the composite are extracted from the obtained stress-strain curve of the composite. The important mechanical properties include maximum stress and toughness. An optimization process is then applied to maximize the mechanical properties of the composite via metaheuristic optimization algorithms including Genetic Algorithm (GA), Ant Colony (ACO), and Grey Wolf Optimizer (GWO). Since the studied nanostructure is mono crystal, the reinforcing mechanism differs from that of a grained macro material. Therefore, the optimization variables are not confined to size and volume fraction but they also include the location of the particles. The optimization is performed for 0.05 and 0.10 volume fractions and different particle sizes with respect to the location of particles. Applying the optimization process, the mechanical properties of the studied composite nanowire are substantially improved for tensile loading. The results reveal that the placement of the particles has a considerable effect on the improvement of mechanical characteristics. At last, a pattern is presented for the placement of particles to achieve the highest tensile characteristics of Al-Al2O3 composite nanowires.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80662098","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 : 2022-09-30DOI: 10.1177/23977914221127528
M. Motamedi, M. Ramezani
Nanocomposites have low weight and the improvement in properties is significant due to their nanostructure. Finding the properties of nanocomposites by experimental or computational methods is the priorities of researchers. Numerous studies on stress-strain behavior, strength, elastic-plastic behavior, bending, buckling, torsion, and other material behavior have been performed using the finite element method, which was reviewed in this study. In all the researches, the results obtained from the finite element method were in proper agreement with the experimental and analytical results. The use of the finite element method allows further studies on nanocomposites, which may not be possible in an experimental method or may require a lot of time and cost. In the following, a model of copper/CNT nanocomposite was studied using finite element method. The model was composed of a CNT in a box of pure copper. The stress contour and displacement contour of model was obtained and the results showed a 135% growth in nanocomposite Young’s module.
{"title":"Application of FE method in predicting the properties of nanocomposites","authors":"M. Motamedi, M. Ramezani","doi":"10.1177/23977914221127528","DOIUrl":"https://doi.org/10.1177/23977914221127528","url":null,"abstract":"Nanocomposites have low weight and the improvement in properties is significant due to their nanostructure. Finding the properties of nanocomposites by experimental or computational methods is the priorities of researchers. Numerous studies on stress-strain behavior, strength, elastic-plastic behavior, bending, buckling, torsion, and other material behavior have been performed using the finite element method, which was reviewed in this study. In all the researches, the results obtained from the finite element method were in proper agreement with the experimental and analytical results. The use of the finite element method allows further studies on nanocomposites, which may not be possible in an experimental method or may require a lot of time and cost. In the following, a model of copper/CNT nanocomposite was studied using finite element method. The model was composed of a CNT in a box of pure copper. The stress contour and displacement contour of model was obtained and the results showed a 135% growth in nanocomposite Young’s module.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84334290","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 : 2022-09-01DOI: 10.1177/23977914221098616
M. Eslami, E. Ghavanloo, Y. Kiani
In this Special Issue, some selected and extended contributions, which were presented at the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME), held in Tehran, Iran in May 2021, are collected. Ever since the first conference in 1992, ISME conferences have been a big scientific festivity for mechanical community in Iran. The ISME conference covers a wide range of mechanical fields in science and technology and aims to bring together various engineering mechanics expertise. The ISME2021 organizers decided to bring out papers presented at the conference in the field of microand nano-mechanics as a special issue of Journal of Nanomaterials, Nanoengineering and Nanosystems. This Special Issue contains four papers and each paper has undergone a rigorous review process. In the following, the articles are briefly introduced. In one of the papers, the static behaviors of functionally graded arbitrary straight-sided quadrilateral nanoplates have been investigated on the basis of a continuum mechanics-based surface elastic model. Mechanical response of polyester based composites filled with carbon black has been studied by experimental and micromechanical methods in another paper. The influence of shear deformation on wave propagation in periodic lattices with various topologies has been examined in one of the selected papers. Finally, a novel nanocomposite bone scaffold has been fabricated and its mechanical properties have been studied by using experimental techniques and finite element method. It is hoped that readers will find the special issue interesting. We would like to thank the authors for submitting their valuable works to the Special Issue, and the anonymous reviewers for their time, effort, and professional comments in evaluating the papers. In addition, our special thanks to the editor-in-chief of the journal, Prof. Vasileios Koutsos, for his excellent cooperation.
{"title":"Preface to the Special Issue on the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME2021)","authors":"M. Eslami, E. Ghavanloo, Y. Kiani","doi":"10.1177/23977914221098616","DOIUrl":"https://doi.org/10.1177/23977914221098616","url":null,"abstract":"In this Special Issue, some selected and extended contributions, which were presented at the 29th Annual International Conference of the Iranian Society of Mechanical Engineers (ISME), held in Tehran, Iran in May 2021, are collected. Ever since the first conference in 1992, ISME conferences have been a big scientific festivity for mechanical community in Iran. The ISME conference covers a wide range of mechanical fields in science and technology and aims to bring together various engineering mechanics expertise. The ISME2021 organizers decided to bring out papers presented at the conference in the field of microand nano-mechanics as a special issue of Journal of Nanomaterials, Nanoengineering and Nanosystems. This Special Issue contains four papers and each paper has undergone a rigorous review process. In the following, the articles are briefly introduced. In one of the papers, the static behaviors of functionally graded arbitrary straight-sided quadrilateral nanoplates have been investigated on the basis of a continuum mechanics-based surface elastic model. Mechanical response of polyester based composites filled with carbon black has been studied by experimental and micromechanical methods in another paper. The influence of shear deformation on wave propagation in periodic lattices with various topologies has been examined in one of the selected papers. Finally, a novel nanocomposite bone scaffold has been fabricated and its mechanical properties have been studied by using experimental techniques and finite element method. It is hoped that readers will find the special issue interesting. We would like to thank the authors for submitting their valuable works to the Special Issue, and the anonymous reviewers for their time, effort, and professional comments in evaluating the papers. In addition, our special thanks to the editor-in-chief of the journal, Prof. Vasileios Koutsos, for his excellent cooperation.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76228986","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 : 2022-08-09DOI: 10.1177/23977914221117030
J. Umavathi
An investigation of the stability of an micropolar nanofluid overlying a sparsely packed porous medium and implanted in a parallel conduit is reviewed. Linear and also nonlinear terms are incorporated for the study. A Darcy-Brinkman-Forchheimer drag force model is deployed. To evaluate nanoscale effects the Buongiorno model is employed. The equations for mass, momentum, angular momentum, energy and nanoparticle species conservation with correlated wall conditions are non-dimensionalized. Modified diffusivity ratio and Lewis number stable the system, the micropolar parameters concentration Rayleigh number destable system for stationary convection. Concentration Rayleigh number, micropolar parameters stabilize and Lewis number destabilizes the system for oscillatory convection. Applications of the study include micro/nano-fluidic devices, nano-doped energy systems and packed beds in chemical engineering.
{"title":"Micropolar nanofluid overlying a porous layer: Thermosolutal convection","authors":"J. Umavathi","doi":"10.1177/23977914221117030","DOIUrl":"https://doi.org/10.1177/23977914221117030","url":null,"abstract":"An investigation of the stability of an micropolar nanofluid overlying a sparsely packed porous medium and implanted in a parallel conduit is reviewed. Linear and also nonlinear terms are incorporated for the study. A Darcy-Brinkman-Forchheimer drag force model is deployed. To evaluate nanoscale effects the Buongiorno model is employed. The equations for mass, momentum, angular momentum, energy and nanoparticle species conservation with correlated wall conditions are non-dimensionalized. Modified diffusivity ratio and Lewis number stable the system, the micropolar parameters concentration Rayleigh number destable system for stationary convection. Concentration Rayleigh number, micropolar parameters stabilize and Lewis number destabilizes the system for oscillatory convection. Applications of the study include micro/nano-fluidic devices, nano-doped energy systems and packed beds in chemical engineering.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83727081","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 : 2022-07-18DOI: 10.1177/23977914221114557
R. Arifin, A. Selamat, R. Asih, Darminto, M. Malyadi, W. Putra
Ti-based alloys have the potential to be used as hydrogen storage units, including NiTi. In contrast, NiTi alloy is sensitive to H atoms. It has been found that hydrogen can cause embrittlement in NiTi alloys. Thus, it is become indispensable to elucidate the reaction of H2 molecules on the NiTi surface. Using density functional theory, we investigated the dissociation mechanism of H2 molecules on the B2 NiTi (001) surface. We found that H atoms tend to come closer to Ni atoms on the Ti- and Ni-terminated (NiTi) (001) substrate. The calculation results showed that the adsorption energy of H atoms at the hollow site was higher than that at the top site. We identified two dissociation mechanisms of H2 molecules on Ti and Ni terminated on NiTi (001) substrates via the hollow sites of the adsorption route. The adsorption energy values obtained were extremely low, that is, 0.23 and 0.38 eV for the Ni and Ti terminated of NiTi (001) substrates, respectively. The dissociation reaction of H2 molecules, which is an exothermic reaction, can quickly occur on the NiTi (001) surface because of the low activation energy.
{"title":"Density functional theory study of dissociative adsorption of H2 molecules on NiTi (001) surfaces","authors":"R. Arifin, A. Selamat, R. Asih, Darminto, M. Malyadi, W. Putra","doi":"10.1177/23977914221114557","DOIUrl":"https://doi.org/10.1177/23977914221114557","url":null,"abstract":"Ti-based alloys have the potential to be used as hydrogen storage units, including NiTi. In contrast, NiTi alloy is sensitive to H atoms. It has been found that hydrogen can cause embrittlement in NiTi alloys. Thus, it is become indispensable to elucidate the reaction of H2 molecules on the NiTi surface. Using density functional theory, we investigated the dissociation mechanism of H2 molecules on the B2 NiTi (001) surface. We found that H atoms tend to come closer to Ni atoms on the Ti- and Ni-terminated (NiTi) (001) substrate. The calculation results showed that the adsorption energy of H atoms at the hollow site was higher than that at the top site. We identified two dissociation mechanisms of H2 molecules on Ti and Ni terminated on NiTi (001) substrates via the hollow sites of the adsorption route. The adsorption energy values obtained were extremely low, that is, 0.23 and 0.38 eV for the Ni and Ti terminated of NiTi (001) substrates, respectively. The dissociation reaction of H2 molecules, which is an exothermic reaction, can quickly occur on the NiTi (001) surface because of the low activation energy.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88074724","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 : 2022-06-10DOI: 10.1177/23977914221103995
M. Oni, B. Jha
Analytical solutions of temperature distributions and flow formation of joint buoyancy and electroosmotic flow in a vertical microtube formed by two concentric microcylinders are presented. The central equations describing flow formations and thermal energy are offered and solved in closed-form in terms of modified Bessel’s function of first and second kinds. These solutions have significant application in predicting and analyzing flow formation and thermal behavior of Newtonian fluids in micropumps and microchips. Based on the exact solutions obtained, the effects of flow parameters are clearly explained with the use of line graphs. Based on the simulation of results using MATLAB, it is found that fluid temperature distributions and fluid velocity in the vertical microannulus could be enhanced by increasing the radius ratio of the concentric microcylinders.
{"title":"Impact of asymmetric zeta-potential on natural convection flow in a vertical microannulus with electroosmotic and Joule heating effects","authors":"M. Oni, B. Jha","doi":"10.1177/23977914221103995","DOIUrl":"https://doi.org/10.1177/23977914221103995","url":null,"abstract":"Analytical solutions of temperature distributions and flow formation of joint buoyancy and electroosmotic flow in a vertical microtube formed by two concentric microcylinders are presented. The central equations describing flow formations and thermal energy are offered and solved in closed-form in terms of modified Bessel’s function of first and second kinds. These solutions have significant application in predicting and analyzing flow formation and thermal behavior of Newtonian fluids in micropumps and microchips. Based on the exact solutions obtained, the effects of flow parameters are clearly explained with the use of line graphs. Based on the simulation of results using MATLAB, it is found that fluid temperature distributions and fluid velocity in the vertical microannulus could be enhanced by increasing the radius ratio of the concentric microcylinders.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78730198","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 : 2022-06-07DOI: 10.1177/23977914221103982
Prakash Kumar Ratha, Satyaranjan Mishra, R. Tripathy, P. K. Pattnaik
This article focuses on the two-dimensional unsteady flow of an incompressible Casson nanofluid over a shrinking horizontal sheet under the influence of inclined magnetic field and in an advance dissipative heat due to Joule heating. The proposed Buongiorno model for the inclusion of Brownian and thermophoresis enriches the flow profiles. Casson model constituents a plastic fluid model that exhibits shear thinning characteristics and high shear viscosity. The proposed fluid model also approximates the rheological behavior of other liquids like physiological suspensions, cosmetics, syrups, etc. The governing partial differential equations (PDEs) that account for effect of Buongiorno model are converted in to nonlinear ordinary differential equations (ODEs) through suitable similarity variables. Further, approximate analytical technique such as Adomian Decomposition Method is beneficial to carry out the solution of the transformed governing equations and the significant nature of the contributing parameter for both the steady and unsteady case is presented via graphs. Moreover, the major contribution is; the Casson parameter along with suction/injection favors in the smooth enhancement in the velocity profiles and the fluid temperature also encouraged by the augmentation in Brownian and thermophoresis parameter.
{"title":"Analytical approach on the free convection of Buongiorno model nanofluid over a shrinking surface","authors":"Prakash Kumar Ratha, Satyaranjan Mishra, R. Tripathy, P. K. Pattnaik","doi":"10.1177/23977914221103982","DOIUrl":"https://doi.org/10.1177/23977914221103982","url":null,"abstract":"This article focuses on the two-dimensional unsteady flow of an incompressible Casson nanofluid over a shrinking horizontal sheet under the influence of inclined magnetic field and in an advance dissipative heat due to Joule heating. The proposed Buongiorno model for the inclusion of Brownian and thermophoresis enriches the flow profiles. Casson model constituents a plastic fluid model that exhibits shear thinning characteristics and high shear viscosity. The proposed fluid model also approximates the rheological behavior of other liquids like physiological suspensions, cosmetics, syrups, etc. The governing partial differential equations (PDEs) that account for effect of Buongiorno model are converted in to nonlinear ordinary differential equations (ODEs) through suitable similarity variables. Further, approximate analytical technique such as Adomian Decomposition Method is beneficial to carry out the solution of the transformed governing equations and the significant nature of the contributing parameter for both the steady and unsteady case is presented via graphs. Moreover, the major contribution is; the Casson parameter along with suction/injection favors in the smooth enhancement in the velocity profiles and the fluid temperature also encouraged by the augmentation in Brownian and thermophoresis parameter.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90877621","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 : 2022-06-07DOI: 10.1177/23977914221103986
P. K. Pattnaik, Sujogya Mishra, A. P. Baitharu, S. Jena
A mathematical discussion of two different classes of nanofluids, such as Copper (Cu)-Kerosene and Aluminum oxide (Al2O3)-Kerosene, over a stretching/shrinking surface, has been discussed in this manuscript. Here Kerosene based nanofluids carry Copper and Aluminum oxide as nanoparticles. The ODEs are obtained from basic equations by introducing the similarity approach. The respective coupled nonlinear ODEs are solved with the help of a suitable numerical technique named as Runge-Kutta fourth-order method. It is found that Al2O3-Kerosene possesses a slightly greater velocity than Cu-Kerosene, but a reverse effect is found in the case of temperature and nanofluids. The presence of volume concentration is important due to the presence of nanoparticles as nanofluids property depends on the physical properties of nanoparticles.
{"title":"Cu-kerosene and Al2O3-kerosene boundary layer nanofluid flow past a stretching/shrinking surface","authors":"P. K. Pattnaik, Sujogya Mishra, A. P. Baitharu, S. Jena","doi":"10.1177/23977914221103986","DOIUrl":"https://doi.org/10.1177/23977914221103986","url":null,"abstract":"A mathematical discussion of two different classes of nanofluids, such as Copper (Cu)-Kerosene and Aluminum oxide (Al2O3)-Kerosene, over a stretching/shrinking surface, has been discussed in this manuscript. Here Kerosene based nanofluids carry Copper and Aluminum oxide as nanoparticles. The ODEs are obtained from basic equations by introducing the similarity approach. The respective coupled nonlinear ODEs are solved with the help of a suitable numerical technique named as Runge-Kutta fourth-order method. It is found that Al2O3-Kerosene possesses a slightly greater velocity than Cu-Kerosene, but a reverse effect is found in the case of temperature and nanofluids. The presence of volume concentration is important due to the presence of nanoparticles as nanofluids property depends on the physical properties of nanoparticles.","PeriodicalId":44789,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74879814","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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