文章基本信息

标题：Effects of chemical reaction, viscosity, thermal conductivity, heat source, radiation/absorption, on MHD mixed convection nano-fluids flow over an unsteady stretching sheet by HAM and numerical method
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作者：Sajid Rehman ; Taza Gul ; Waris Khan 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2022
卷号：14
期号：1
页码：1-20
DOI：10.1177/16878140221074301
语种：English
出版社：Sage Publications Ltd.
摘要：Investigations are performed for further observations of heat and mass transfer in magneto-hydrodynamic mixed-convectional nano-fluid flow with the assumption of variable viscosity and thermal-conductivity over an unsteady stretching sheet. Base fluid is Carboxy-methyl cellulose (CMC) water as a carrier fluid with different nano-particles such as TiO2 (Titanium), Ag (Silver), Al2O3 (Aluminum), and Cu (Copper). Flow contains different physical parameters, such as heat source, chemical reaction effect, Schmidt number, and radiation absorptions effects are observed to be significant in the presences of magnetic field. Obtained equations are solved by numerically BVP4C-package (shooting method) and analytically by BVPh2.0-package (Homotopy Analysis Method “HAM”). Interested physical quantities are, viscosity-parameter (A), Thermal-conductivity parameter (N),Thermocapillary-number (M), Hartmann-number (Ma), Prandtl-number (Pr), 4-nano-particles (ϕ), temperature Grashof number (Grt), and mass Grashof number (Grc) are the focus to the velocity, temperature, and solute concentration profiles. It is concluded that, Solute concentration of (Al2O3)-water has higher than the other 3-nano-fluids. Mass flux, heat flux, and Skin friction of fluids are direct functions of magnetic force, while inverse function of temperature. Magnetic force also decreased the speed of fluids and hence mass flux reduced which implies that, the temperature reduces. Grt has also inverse relation with mass flux, heat flux, and skin friction, while direct relation with the speed of fluids. Similarly, Grc has inverse relation with −Φ′(0), −θ′(0), and −f″(0), but direct relation with θ(1). Different results are shown in graphical and tabular form.
关键词：Viscosity parameter;variable thermal-conductivity;thermocapillary number;magnetic force;unsteady stretching surface;Grashof number;Sherwood number;chemical reaction effect;heat source;radiation absorptions