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Free Convection of Non-Newtonian Nanofluids in Porous media with Gyrotactic Microorganisms

机译:非牛顿纳米流体在带旋涡菌的多孔介质中的自由对流

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摘要

The free convection of non-Newtonian nanofluids along a vertical plate in porous medium is investigated numerically. It is assumed that the medium contains gyrotactic microorganisms along with nanoparticles and the plate is subjected to prescribed temperature, concentration of nanoparticles and density of motile microorganisms. It is further assumed that the plate is impermeable. The governing partial differential equations are reduced to nonlinear ordinary differential equations using similarity transformations. The nonlinear ordinary differential equations are then solved by a finite difference numerical method. The effects of controlling parameters on several dimensionless quantities and numbers of our interest are investigated. The numerical results are compared with the published data and an excellent agreement has been found. It is found that nanofluid and bioconvection parameters have strong effects on local Nusselt, Sherwood and density numbers.
机译:数值研究了非牛顿纳米流体沿垂直板在多孔介质中的自由对流。假定该培养基包含回旋微生物以及纳米颗粒,并且该板要经受规定的温度,纳米颗粒的浓度和运动微生物的密度。进一步假设该板是不可渗透的。使用相似变换,控制的偏微分方程被简化为非线性常微分方程。然后用有限差分数值方法求解非线性常微分方程。研究了控制参数对我们感兴趣的几个无量纲数量和数量的影响。将数值结果与已发布的数据进行了比较,发现了一个很好的一致性。发现纳米流体和生物对流参数对局部Nusselt,Sherwood和密度值有很大影响。

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