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Radiation and Chemical Reaction Effects on Unsteady Coupled Heat and Mass Transfer by Free Convection from a Vertical Plate Embedded in Porous Media | ||
| Journal of Heat and Mass Transfer Research | ||
| مقاله 64، دوره 7، شماره 2 - شماره پیاپی 14، بهمن 2020، صفحه 95-103 اصل مقاله (1.28 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2019.10763.1149 | ||
| نویسندگان | ||
| Abdelraheem Aly* 1؛ A. J Chamkha2؛ Z. A. S Raizah3 | ||
| 1Department of Mathematics, Faculty of Science, South Valley university, Qena, Egypt | ||
| 2Faculty of Engineering, Kuwait College of Science and Technology, Doha District, Kuwait. | ||
| 3Department of Mathematics, Faculty of Science, Abha, King Khalid University, Saudi Arabia. | ||
| تاریخ دریافت: 16 اسفند 1395، تاریخ بازنگری: 28 تیر 1398، تاریخ پذیرش: 01 مرداد 1398 | ||
| چکیده | ||
| A numerical solution is presented for unsteady coupled heat and mass transfer by natural convection from a vertical plate embedded in a uniform porous medium in the presence of thermal radiation and chemical reaction effects. The governing equations for this problem were developed and non-dimensionalized and the resulting equations were then solved numerically by an explicit finite-difference scheme. The Roseland approximation is used to describe the radiative heat flux in the energy equation. The solutions at each time step have been found to reach the steady state solution properly. The numerical results are presented in the graphical form to show the effects of material parameters including the thermal buoyancy, the solutal buoyancy, Reynolds number, the inverse thermal radiation parameter, the permeability parameter, Prandtl number, Schmidt number and the chemical reaction parameter on the skin-friction coefficient, the Nusselt number, the Sherwood number, the velocity profiles, the temperature profiles and the concentration profiles in the boundary layer. | ||
| کلیدواژه‌ها | ||
| Finite-difference solution؛ radiation؛ chemical reaction؛ Porous medium | ||
| مراجع | ||
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Basiri Parsa, M.M.Rashidi, O.Anwar Bég, S.M.Sadri, Semi-computational simulation of magneto-hemodynamic flow in a semi-porous channel using optimal homotopy and differential transform methods, Computers in Biology and Medicine, Vol. 43, Iss. 9 (2013) 1142-1153. [22] Ali J. Chamkha, , M. F. El-Amin, and A. M. Aly. Unsteady double-diffusive natural convective MHD flow along a vertical cylinder in the presence of chemical reaction, thermal radiation and Soret and Dufour effects. Journal of Naval Architecture and Marine Engineering 8.1 (2011): 25-36. [23] Ali J. Chamkha, A. M. Rashad, and Abdelraheem M. Aly. Transient natural convection flow of a nanofluid over a vertical cylinder, Meccanica 48.1 (2013): 71-81. [24] Abdelraheem M. Aly, and Sameh Elsayed Ahmed. "Double-diffusive natural convective flow of a nanofluid over a vertical cylinder." Journal of Nanofluids 5.1 (2016): 110-119. | ||
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