文章基本信息

标题：Numerical Investigation of Endothermic/Exothermic Reaction in MHD Natural Convective Nano-Fluid Flow over a Vertical Cone with Heat Source/Sink
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作者：Silpi HAZARIKA ; Sahin AHMED
期刊名称：Walailak Journal of Science and Technology (WJST)
印刷版ISSN：2228-835X
出版年度：2021
卷号：18
期号：17
页码：1-18
DOI：10.48048/wjst.2021.22834
语种：English
出版社：Institute of Research and Development, Walailak University.
摘要：The significance of natural convective MHD flow of nano-fluid over a vertical cone with Brownian motion, viscous dissipation, heat generation, thermophoresis, and chemical reaction in porous surroundings is discussed in this article. The leading non-linear PDEs are transmuted by using applicable similarity transform and the reformed equations, along with the boundary conditions, are numerically solved by finite difference technique of bvp4c code via MATLAB code. The significance of the controlling parameters on velocity, temperature, and concentration are portrayed vividly. Furthermore, skin friction, Nusselt number, and Sherwood number are charted for diverse parameters. It is worth mentioning that impact of heat source ( ) on velocity and temperature is remarkable. Molar species concentration is accentuated with progressive values of Dufour number, while it is the opposite for velocity and temperature profiles. Moreover, thermal energy is absorbed due to the application of endothermic chemical reaction that cools the surroundings, which minimizes the diffusion rate of molecules and, therefore, less molar concentration is occurred. Conduction is the dominant mechanism for heat transport by applying Rayleigh number. The profiles of skin friction, Nusselt number, and Sherwood number are reduced with higher values of Rayleigh number. The present study has an appreciable impact on many engineering applications, such as magnetic storage media, the cooling systems of electronic devices, nuclear power plants, the chemical industry, and many more.HIGHLIGHTSHeat source/sink is a key parameter for rate of heat/mass transfer of nanofluid flowExothermic chemical reaction plays a dynamic role to boost the nanofluid flow motionHigher Rayleigh number decays the flow rate as well as rate of heat and mass transferThe study incorporates the application of Brownian motion in nanofluid flowCurrent study has diverseapplications in cooling processGRAPHICAL.
关键词：Buoyancy ratio parameter; Chemical reaction; Heat source; Porous vertical cone; Viscous dissipation