Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis
A wide variety of heat transfer applications employ ferrofluids. These include heat exchangers, materials research, and a host of other industries, such as food processing, solar trough collectors, and aerospace engineering. The main goal of this study is to investigate how fluid moves through a por...
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Elsevier
2025-03-01
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| Series: | International Journal of Thermofluids |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202725000771 |
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| author | S. Manjunatha J. Santhosh Kumar Khalil Ur Rehman Wasfi Shatanawi S.V.K. Varma |
| author_facet | S. Manjunatha J. Santhosh Kumar Khalil Ur Rehman Wasfi Shatanawi S.V.K. Varma |
| author_sort | S. Manjunatha |
| collection | DOAJ |
| description | A wide variety of heat transfer applications employ ferrofluids. These include heat exchangers, materials research, and a host of other industries, such as food processing, solar trough collectors, and aerospace engineering. The main goal of this study is to investigate how fluid moves through a porous medium stretched across a Casson ferrofluid bilinear stretching surface, accounting for the effects of slip and magnetic fields. This study takes into account factors such as thermal radiation, heat source/sink, first-order chemical reactions, Soret, and Dufour effects. Similarity transformations convert the flow model's governing nonlinear coupled partial differential equations into ordinary coupled differential equations. The results are obtained using the time-saving bvp4c approach in MATLAB along with the shooting technique and presented in graphs and tables. The derived quantities, namely skin friction, Nusselt number, and Sherwood number at the stretching surface, are also computed. The effects of various parameters on flow-derived quantities have been analyzed and discussed. The momentum boundary layer drops as the Casson parameter rises. As the magnetic parameter raises, the fluid velocity drops, while the fluid temperature exhibits the opposite phenomenon. As radiation and heat sources increase, the temperature rises, whereas the Dufour effect leads to the opposite outcome. The adjusted R-squared and R-squared for skin friction achieve a value of 99.92 %. Compared to the Dufour effect, the Nusselt number is more affected by the heat source and thermal radiation parameter. Some important contributions include discussing response surface methods and studying the complex connections between Casson fluid, porosity, and the stretching ratio parameter. |
| format | Article |
| id | doaj-art-156d25f5734d493b8fd00dada9dfd1dc |
| institution | Kabale University |
| issn | 2666-2027 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj-art-156d25f5734d493b8fd00dada9dfd1dc2025-02-12T05:32:51ZengElsevierInternational Journal of Thermofluids2666-20272025-03-0126101130Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysisS. Manjunatha0J. Santhosh Kumar1Khalil Ur Rehman2Wasfi Shatanawi3S.V.K. Varma4Department of Mathematics, School of Applied Sciences, REVA University, Bengaluru, Karnataka, IndiaDepartment of Mathematics, School of Applied Sciences, REVA University, Bengaluru, Karnataka, IndiaDepartment of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia; Corresponding author.Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia; Department of Mathematics, Faculty of Science, The Hashemite University, P.O Box 330127, Zarqa 13133, JordanDepartment of Mathematics, School of Applied Sciences, REVA University, Bengaluru, Karnataka, IndiaA wide variety of heat transfer applications employ ferrofluids. These include heat exchangers, materials research, and a host of other industries, such as food processing, solar trough collectors, and aerospace engineering. The main goal of this study is to investigate how fluid moves through a porous medium stretched across a Casson ferrofluid bilinear stretching surface, accounting for the effects of slip and magnetic fields. This study takes into account factors such as thermal radiation, heat source/sink, first-order chemical reactions, Soret, and Dufour effects. Similarity transformations convert the flow model's governing nonlinear coupled partial differential equations into ordinary coupled differential equations. The results are obtained using the time-saving bvp4c approach in MATLAB along with the shooting technique and presented in graphs and tables. The derived quantities, namely skin friction, Nusselt number, and Sherwood number at the stretching surface, are also computed. The effects of various parameters on flow-derived quantities have been analyzed and discussed. The momentum boundary layer drops as the Casson parameter rises. As the magnetic parameter raises, the fluid velocity drops, while the fluid temperature exhibits the opposite phenomenon. As radiation and heat sources increase, the temperature rises, whereas the Dufour effect leads to the opposite outcome. The adjusted R-squared and R-squared for skin friction achieve a value of 99.92 %. Compared to the Dufour effect, the Nusselt number is more affected by the heat source and thermal radiation parameter. Some important contributions include discussing response surface methods and studying the complex connections between Casson fluid, porosity, and the stretching ratio parameter.http://www.sciencedirect.com/science/article/pii/S2666202725000771Heat transferThermal radiationFerrofluidCasson fluidSoret and Dufour effect |
| spellingShingle | S. Manjunatha J. Santhosh Kumar Khalil Ur Rehman Wasfi Shatanawi S.V.K. Varma Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis International Journal of Thermofluids Heat transfer Thermal radiation Ferrofluid Casson fluid Soret and Dufour effect |
| title | Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis |
| title_full | Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis |
| title_fullStr | Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis |
| title_full_unstemmed | Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis |
| title_short | Thermal radiation and thermo-diffusion in Casson-ferrofluid over a magnetized porous surface: RSM analysis |
| title_sort | thermal radiation and thermo diffusion in casson ferrofluid over a magnetized porous surface rsm analysis |
| topic | Heat transfer Thermal radiation Ferrofluid Casson fluid Soret and Dufour effect |
| url | http://www.sciencedirect.com/science/article/pii/S2666202725000771 |
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