期刊
JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY
卷 22, 期 3, 页码 309-319出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S2737416523400069
关键词
Williamson nanofluid; porous medium; bioconvection; stratification; Arrhenius activation energy; jet flow
This study analyzes the characteristics of heat and mass transfer of jet flow of nanofluid past a porous stretching sheet in the presence of microorganisms. Numerical results show that the magnetic field controls the velocity profile of the jet flow, and an increase in the Williamson parameter reduces the fluid velocity. Additionally, higher values of the thermophoresis parameter and porosity increase the thermal and concentration profiles of the nanofluid.
Due to the higher coefficients of heat and mass transfer, the jet flow has become an effective source for the transfer of heat and mass in various industries. Due to these high coefficients, the heat and mass transfer rates will be high in the appliances equipped with the jet flow. Further, the existence of the magnetic field helps in controlling the velocity and the presence of the gyrotactic microorganisms ensure proper mixing of nanoparticles. A dilute nanoparticle suspension is assumed so that it will not affect the movement of motile cells that leads to bioconvection. Hence, this paper aims to analyze the characteristics of heat transfer as well as mass transfer of the jet flow of Williamson nanofluid past a porous stretching sheet in the existence of microorganisms. The mathematical model obtained as a result of these assumptions is transformed into nonlinear ordinary differential equations for which acceptable solutions are obtained using the numerical method. The results thus obtained are presented graphically and based on the outcomes, it is perceived that the magnetic field has control over the velocity profile thus influencing the thermal profile. The increase in the Williamson parameter also reduces the velocity of the fluid flow. Further, an increase was noticed in the thermal and concentration profiles of the nanofluid for higher values of thermophoresis parameter and the increase in the porosity reduced the speed of the flow of nanofluid.
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