Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface
The study explores the properties of mass and heat transfer in a time-dependent, unsteady magnetohydrodynamic (MHD) flow over a permeable, radiative, and expanded surface, incorporating bio-convection, nanoparticle suspension, and gyrotactic bacteria dynamics. The model considers the effects of emis...
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| Language: | English |
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Elsevier
2025-04-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25001224 |
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| author | Chinnam A.A.E. Shalini Charankumar Ganteda G.V. Ramana Reddy B Uma Maheswari G. Kokila Vediyappan Govindan Haewon Byeon Seepana Praveenkumar Busayamas Pimpunchat |
| author_facet | Chinnam A.A.E. Shalini Charankumar Ganteda G.V. Ramana Reddy B Uma Maheswari G. Kokila Vediyappan Govindan Haewon Byeon Seepana Praveenkumar Busayamas Pimpunchat |
| author_sort | Chinnam A.A.E. Shalini |
| collection | DOAJ |
| description | The study explores the properties of mass and heat transfer in a time-dependent, unsteady magnetohydrodynamic (MHD) flow over a permeable, radiative, and expanded surface, incorporating bio-convection, nanoparticle suspension, and gyrotactic bacteria dynamics. The model considers the effects of emission, speed slip, and bio-thermal convection in the fluid system. The Cattaneo-Christov heat flux model is employed to account for the finite speed of thermal diffusion, and the fourth-order Runge-Kutta method with the shooting technique is utilized for numerical solutions. Additionally, the study investigates the influence of mass suction, heat source, and aligned magnetic field on the boundary layer. The local concentration of mobile microorganisms decreases as the stretching parameter and bio-convection Schmidt both improve. The concentration φ(η) gets stronger, and when Sc values increase, it decreases. The concentration of microorganism h(η) is strengthened by increasing angle β, but it is diminished by increasing Pe,Sb and Sc, respectively.Even if the rate of temperature transmission (Nu) is maximal for positive values of A relative to negative values, the friction drags (Cf) are more powerful for negative values of A than for positive values of A. |
| format | Article |
| id | doaj-art-22ac27bcccad4c7e844ebde10e80de48 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-22ac27bcccad4c7e844ebde10e80de482025-08-20T01:57:36ZengElsevierCase Studies in Thermal Engineering2214-157X2025-04-016810586210.1016/j.csite.2025.105862Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surfaceChinnam A.A.E. Shalini0Charankumar Ganteda1G.V. Ramana Reddy2B Uma Maheswari3G. Kokila4Vediyappan Govindan5Haewon Byeon6Seepana Praveenkumar7Busayamas Pimpunchat8Department of Mathematics, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, 522302, IndiaDepartment of Mathematics, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, 522302, India; Corresponding author.Department of Mathematics, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, 522302, IndiaDepartment of Mathematics, Matrusri Engineering College, Saidabad, Hyderabad, IndiaDepartment of Mathematics, School of Science, Tamilnadu Open University, 600015, Chennai, IndiaDepartment of Mathematics, Hindustan Institute of Technology and Science, 603103, Chennai, IndiaConvergence Department, Korea University of Technology and Education, Cheonan, South Korea; Corresponding author.Department of Nuclear and Renewable Energy, Ural Federal University, 620002, Ekaterinburg, RussiaDepartment of Mathematics, School of Science, King Mongkut's Institute of Technology Ladkrabang (KMITL), 10520, Bangkok, ThailandThe study explores the properties of mass and heat transfer in a time-dependent, unsteady magnetohydrodynamic (MHD) flow over a permeable, radiative, and expanded surface, incorporating bio-convection, nanoparticle suspension, and gyrotactic bacteria dynamics. The model considers the effects of emission, speed slip, and bio-thermal convection in the fluid system. The Cattaneo-Christov heat flux model is employed to account for the finite speed of thermal diffusion, and the fourth-order Runge-Kutta method with the shooting technique is utilized for numerical solutions. Additionally, the study investigates the influence of mass suction, heat source, and aligned magnetic field on the boundary layer. The local concentration of mobile microorganisms decreases as the stretching parameter and bio-convection Schmidt both improve. The concentration φ(η) gets stronger, and when Sc values increase, it decreases. The concentration of microorganism h(η) is strengthened by increasing angle β, but it is diminished by increasing Pe,Sb and Sc, respectively.Even if the rate of temperature transmission (Nu) is maximal for positive values of A relative to negative values, the friction drags (Cf) are more powerful for negative values of A than for positive values of A.http://www.sciencedirect.com/science/article/pii/S2214157X25001224Cattaneo-ChrystovBrownian motionThermophoresis |
| spellingShingle | Chinnam A.A.E. Shalini Charankumar Ganteda G.V. Ramana Reddy B Uma Maheswari G. Kokila Vediyappan Govindan Haewon Byeon Seepana Praveenkumar Busayamas Pimpunchat Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface Case Studies in Thermal Engineering Cattaneo-Chrystov Brownian motion Thermophoresis |
| title | Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface |
| title_full | Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface |
| title_fullStr | Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface |
| title_full_unstemmed | Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface |
| title_short | Numerical simulation of unsteady MHD bio-convective flow with Cattaneo-Christov heat flux over a stretching surface |
| title_sort | numerical simulation of unsteady mhd bio convective flow with cattaneo christov heat flux over a stretching surface |
| topic | Cattaneo-Chrystov Brownian motion Thermophoresis |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25001224 |
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