Pub Date : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023048400
Pushap Lata Sharma, ASHOK KUMAR
This paper investigated the onset of convection in a horizontal layer of a porous material saturated with a viscoelastic nanofluid under the influence of rotation and magnetic field. The momentum equation in porous media was simulated using the Darcy model. The rheological behavior of viscoelastic nanofluids was described using a Jeffrey model-type constitutive equation. The viscoelastic nanofluid model contains Brownian motion and thermophoresis effects. The normal mode approach is used in a linear stability study, and the onset criteria for stationary and oscillatory convection are derived analytically. The effects of the Jeffrey parameter, solutal Rayleigh number, medium porosity, nanoparticle Rayleigh number, thermosolutal Lewis number, Chandrasekhar number, Taylor number, Dufour parameter and Soret parameter on the stability of the system were investigated. For various parameters, stationary and oscillatory convection regimes were calculated and analyzed in detail.
{"title":"Effects of Rotation and Magnetic Field on Thermosolutal Convection in Jeffrey Nanofluid with Porous Medium","authors":"Pushap Lata Sharma, ASHOK KUMAR","doi":"10.1615/specialtopicsrevporousmedia.2023048400","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023048400","url":null,"abstract":"This paper investigated the onset of convection in a horizontal layer of a porous material saturated with a viscoelastic nanofluid under the influence of rotation and magnetic field. The momentum equation in porous media was simulated using the Darcy model. The rheological behavior of viscoelastic nanofluids was described using a Jeffrey model-type constitutive equation. The viscoelastic nanofluid model contains Brownian motion and thermophoresis effects. The normal mode approach is used in a linear stability study, and the onset criteria for stationary and oscillatory convection are derived analytically. The effects of the Jeffrey parameter, solutal Rayleigh number, medium porosity, nanoparticle Rayleigh number, thermosolutal Lewis number, Chandrasekhar number, Taylor number, Dufour parameter and Soret parameter on the stability of the system were investigated. For various parameters, stationary and oscillatory convection regimes were calculated and analyzed in detail.","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135056606","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023048444
Deepak Bains, Pushap Lata Sharma
This article presents a numerical and graphical examination of thermal instability of hydro-magnetic Jeffrey nanofluids in porous media with variable gravity for: free-free, rigid-rigid and rigid-free boundaries by using Galerkin technique and normal mode analysis. The Darcy model is employed. Four different gravity variable parameters : exponential, parabolic and linear are taken and their effects on the Jeffrey parameter, magnetic field, moderated diffusivity ratio, porosity of porous media, Lewis number and nanoparticle Rayleigh number on stationary convection have been calculated numerically and graphically shown for all three boundary conditions namely free-free, rigid-rigid and rigid-free. The necessary conditions for frequencies of the oscillatory mode under all three boundaries have been calculated.
{"title":"THERMAL INSTABILITY OF HYDRO-MAGNETIC JEFFREY NANOFLUIDS IN POROUS MEDIA WITH VARIABLE GRAVITY FOR: FREE-FREE, RIGID-RIGID AND RIGID-FREE BOUNDARIES","authors":"Deepak Bains, Pushap Lata Sharma","doi":"10.1615/specialtopicsrevporousmedia.2023048444","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023048444","url":null,"abstract":"This article presents a numerical and graphical examination of thermal instability of hydro-magnetic Jeffrey nanofluids in porous media with variable gravity for: free-free, rigid-rigid and rigid-free boundaries by using Galerkin technique and normal mode analysis. The Darcy model is employed. Four different gravity variable parameters : exponential, parabolic and linear are taken and their effects on the Jeffrey parameter, magnetic field, moderated diffusivity ratio, porosity of porous media, Lewis number and nanoparticle Rayleigh number on stationary convection have been calculated numerically and graphically shown for all three boundary conditions namely free-free, rigid-rigid and rigid-free. The necessary conditions for frequencies of the oscillatory mode under all three boundaries have been calculated.","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"2675 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136204732","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023045885
D. Saikia, N. Ahmed, Rajdeep Bordoloi
{"title":"Natural Convective MHD Mass Transfer Flow Past an Infinite Vertical Porous Plate Embedded in a Porous Medium with Thermal Diffusion and Chemical Reaction","authors":"D. Saikia, N. Ahmed, Rajdeep Bordoloi","doi":"10.1615/specialtopicsrevporousmedia.2023045885","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023045885","url":null,"abstract":"","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"13 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77266721","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023045743
Aniket S. Dhavale, M. Lele
{"title":"Investigations on Open-Cell Metal Foam Filled Tubes for Heat Transfer Enhancement- A Discussion of Enhancement Mechanisms","authors":"Aniket S. Dhavale, M. Lele","doi":"10.1615/specialtopicsrevporousmedia.2023045743","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023045743","url":null,"abstract":"","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"7 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85599015","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023050008
N Jyothi, VIJAYA KUMAR AVULA GOLLA
The current article investigates the heat and mass transfer of convective MHD Maxwell nanofluid flow over a porous stretching sheet with Cattaneo-Christove heat flux. The influences of heat sources, radiation, and viscous dissipation are investigated. Also, the activation energy with binary chemical reaction and suction/injection are considered into the account. The dimensional governing equations are transmitted into non-dimensional form by similarity transformations. Further, the obtained mathematical model is solved numerically in MATLAB. The effect of physical parameters pertaining in flow regime are investigated through figures and tables. Fluid velocity enhances with the impact of magnetic field, porosity and suction parameters while the Brownian motion is significant with an improved values of heat generation and radiation, Fluid temperature declines with an upsurge values of thermal relaxation time. And Increasing thermophoresis and activation energy lead to an increase in the concentration whereas the opposite trend is seen for increasing chemical reaction. The Nussult number enhanced due to the larger values of thermal Grashof number, solutal Grashof number and Biot number whereas it declines with the escalating values of Brownian motion, thermophoresis and Eckert number. The comparison of the present results is carried out with the published results and noted a good agreement.
{"title":"Activation energy effect on MHD convective Maxwell nanofluid flow with Cattaneo-Christove heat flux over a porous stretching sheet","authors":"N Jyothi, VIJAYA KUMAR AVULA GOLLA","doi":"10.1615/specialtopicsrevporousmedia.2023050008","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023050008","url":null,"abstract":"The current article investigates the heat and mass transfer of convective MHD Maxwell nanofluid flow over a porous stretching sheet with Cattaneo-Christove heat flux. The influences of heat sources, radiation, and viscous dissipation are investigated. Also, the activation energy with binary chemical reaction and suction/injection are considered into the account. The dimensional governing equations are transmitted into non-dimensional form by similarity transformations. Further, the obtained mathematical model is solved numerically in MATLAB. The effect of physical parameters pertaining in flow regime are investigated through figures and tables. Fluid velocity enhances with the impact of magnetic field, porosity and suction parameters while the Brownian motion is significant with an improved values of heat generation and radiation, Fluid temperature declines with an upsurge values of thermal relaxation time. And Increasing thermophoresis and activation energy lead to an increase in the concentration whereas the opposite trend is seen for increasing chemical reaction. The Nussult number enhanced due to the larger values of thermal Grashof number, solutal Grashof number and Biot number whereas it declines with the escalating values of Brownian motion, thermophoresis and Eckert number. The comparison of the present results is carried out with the published results and noted a good agreement.","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981397","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023048137
Arpan Garg, Y.D. Sharma, Subit K. Jain, Shivani Saini
The onset of thermo-bio-convection in a horizontal fluid layer saturated by gyrotactic microorganisms into an anisotropic porous medium is examined. The modeling of the governing equations considers heating from below, Darcy flow, and Boussinesq approximations along with the presence of gyrotactic microorganisms. The system of ordinary differential equations is obtained using linear stability analysis and the normal mode technique. The single-term Galerkin method casts the analytical solutions while the higher-order Galerkin technique is employed to compute the numerical solutions. The influence of the mechanical and the thermal anisotropy parameters along with all bioconvection parameters on the onset of thermo-bio-convection are analytically as well as numerically discussed. It is perceived that bioconvection Rayleigh-Darcy number $Rb$, the gyrotactic number $G$, and P{'e}clet number $Q$ are to fast-forward the beginning of bioconvection motion. On the other hand, thermal anisotropy produces a stable system and acts to postpone the bio-convection pattern formulation. Mechanical anisotropy is found to have a destabilizing impact on the stability of the suspension and helps in the development of bio-convection. The measure of cell eccentricity parameter $alpha$ has a dual effect on system stability and stabilizes the system if $frac{delta^2_{c}}{pi^2}>1$.
{"title":"Impact of an Anisotropic Porous media on Thermo-bio-convection instability in presence of Gyrotactic microorganisms and heating from below","authors":"Arpan Garg, Y.D. Sharma, Subit K. Jain, Shivani Saini","doi":"10.1615/specialtopicsrevporousmedia.2023048137","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023048137","url":null,"abstract":"The onset of thermo-bio-convection in a horizontal fluid layer saturated by gyrotactic microorganisms into an anisotropic porous medium is examined. The modeling of the governing equations considers heating from below, Darcy flow, and Boussinesq approximations along with the presence of gyrotactic microorganisms. The system of ordinary differential equations is obtained using linear stability analysis and the normal mode technique. The single-term Galerkin method casts the analytical solutions while the higher-order Galerkin technique is employed to compute the numerical solutions. The influence of the mechanical and the thermal anisotropy parameters along with all bioconvection parameters on the onset of thermo-bio-convection are analytically as well as numerically discussed. It is perceived that bioconvection Rayleigh-Darcy number $Rb$, the gyrotactic number $G$, and P{'e}clet number $Q$ are to fast-forward the beginning of bioconvection motion. On the other hand, thermal anisotropy produces a stable system and acts to postpone the bio-convection pattern formulation. Mechanical anisotropy is found to have a destabilizing impact on the stability of the suspension and helps in the development of bio-convection. The measure of cell eccentricity parameter $alpha$ has a dual effect on system stability and stabilizes the system if $frac{delta^2_{c}}{pi^2}>1$.","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135711019","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023047492
S. Rai, B. Bhadauria, Anurag Srivastava, Anish Kumar
{"title":"Thermal instability in Walter-B nanoliquid filled in Hele-Shaw cell under 3-types of magnetic-field modulation with through-flow","authors":"S. Rai, B. Bhadauria, Anurag Srivastava, Anish Kumar","doi":"10.1615/specialtopicsrevporousmedia.2023047492","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023047492","url":null,"abstract":"","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"235 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73642609","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023048900
S. Haddad, Duaa Dhumd
{"title":"Onset of Double-Diffusive Convection with a Kelvin-Voigt Fluid of variable order","authors":"S. Haddad, Duaa Dhumd","doi":"10.1615/specialtopicsrevporousmedia.2023048900","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023048900","url":null,"abstract":"","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"84 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77307879","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023048200
Shahizlan Shakir Hajool, A. Harfash
{"title":"Instability in Poiseuille flow in a bidisperse porous medium with relatively large macropores","authors":"Shahizlan Shakir Hajool, A. Harfash","doi":"10.1615/specialtopicsrevporousmedia.2023048200","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023048200","url":null,"abstract":"","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"1994 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89062604","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 : 2023-01-01DOI: 10.1615/specialtopicsrevporousmedia.2023043997
Ali Akhzary, A. R. Khorshidvand
In this paper, the stress analysis and dynamic behavior of porous functionally graded rectangular plates under moving concentrated load when supported on the Winkler-Pasternak model of elastic foundations are considered. The mechanical properties of functionally graded plates, such as their elasticity modulus and density, are varied in accordance with the power law, while the constant Poisson's ratio is taken into consideration, and porosity is assumed to be classified into two categories: evenly and unevenly distributed. On the basis of first-order shear deformation theory and Hamilton's principle, the theoretical equations of motion and boundary conditions are obtained. The concepts of change of variables, as well as the implementation of the generalized differential quadrature method and the Newmark procedure, have all been used to achieve dimensionless discrete equations. The effects of the volume fraction index, the velocity of the load, the porosity volume fraction and distribution pattern, the boundary conditions, the modulus of the Winkler foundation, and the Pasternak shear layer foundations' stiffness on the displacements and stresses of plates have been investigated.
{"title":"A Mixed DQ-Newmark Method for Dynamic Response and Stress Analysis of Porous FG Rectangular Plates under Moving Load","authors":"Ali Akhzary, A. R. Khorshidvand","doi":"10.1615/specialtopicsrevporousmedia.2023043997","DOIUrl":"https://doi.org/10.1615/specialtopicsrevporousmedia.2023043997","url":null,"abstract":"In this paper, the stress analysis and dynamic behavior of porous functionally graded rectangular plates under moving concentrated load when supported on the Winkler-Pasternak model of elastic foundations are considered. The mechanical properties of functionally graded plates, such as their elasticity modulus and density, are varied in accordance with the power law, while the constant Poisson's ratio is taken into consideration, and porosity is assumed to be classified into two categories: evenly and unevenly distributed. On the basis of first-order shear deformation theory and Hamilton's principle, the theoretical equations of motion and boundary conditions are obtained. The concepts of change of variables, as well as the implementation of the generalized differential quadrature method and the Newmark procedure, have all been used to achieve dimensionless discrete equations. The effects of the volume fraction index, the velocity of the load, the porosity volume fraction and distribution pattern, the boundary conditions, the modulus of the Winkler foundation, and the Pasternak shear layer foundations' stiffness on the displacements and stresses of plates have been investigated.","PeriodicalId":45135,"journal":{"name":"Special Topics & Reviews in Porous Media-An International Journal","volume":"88 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78325425","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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