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首页> 外文期刊>Heat transfer >Mixed convection flow of magnetic hybrid nanofluid over a bidirectional porous surface with internal heat generation and a higher-order chemical reaction
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Mixed convection flow of magnetic hybrid nanofluid over a bidirectional porous surface with internal heat generation and a higher-order chemical reaction

机译：用内部发热和高阶化学反应在双向多孔表面上混合对流流量在双向多孔表面上进行双向多孔表面

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摘要

A numerical study is presented for three-dimensional magnetic hybrid nanofluid (SWCNT + Ag-H_2O) flow over a porous bidirectional stretchable surface due to the physical effects of a higher-order chemical reaction, internal heat generation, and mixed convection. The systems of nonlinear ordinary diffrential equations of hybrid nanofluid that is, flow, energy, and mass transfer are developed and computations have been carried out, employing shooting method along with Runge-Kutta-Fehlberg fourth- and fifth-order technique. The characteristics of heat transfer, mass diffusion, and fluid flow are presented for the range of porosity parameter, 0.5 ≤ K ≤ 1.2; Hartmann number, 0.2 ≤ Ha ≤ 1; internal heat generation, 0.1 ≤ H ≤ 1; thermal Grashof number, 0.1 ≤ Gr_T ≤ 0.4; mass Grashof number, 0.1 ≤ Gr_C ≤ 0.4; Schmidt number, 0.2 ≤ Sc ≤ 1; chemical reaction parameter, 0.5 ≤ Y ≤ 3, and order of chemical reaction (1 ≤ q ≤ 4) for power index number n = 1 and 2 at a fixed value of nano-particles' volume fraction and Prandtl number. The graphs and tables are depicted and explained for the response to various embedded parameters. The upshots of the current problem illustrate that with an increase in the magnetic field and chemical reaction, the mass transfer rate increases. Moreover, Nusselt number profiles are reduced with an increase in the coefficient of volumetric heat generation values for both power index number, that is, n = 1 and 2.
机译：由于高阶化学反应，内部发热和混合对流的物理效应，在多孔双向拉伸表面上呈现了三维磁性杂化纳米流体（SWCNT + Ag-H_2O）流动的数值研究。开发出的杂交纳米流体的非线性普通衍射方程的系统，其流动，能量和传质，采用射击方法以及跳动-Kutta-Fehlberg第四和第五阶技术进行了计算。传热，质量扩散和流体流动的特性为孔隙率参数范围，0.5≤k≤1.2; Hartmann号，0.2≤HA≤1;内部发热，0.1≤H≤1;热量格雷什数，0.1≤gr_t≤0.4;质量格雷什数量，0.1≤gr_c≤0.4;施密特数，0.2≤Sc≤1;化学反应参数，0.5≤y≤3，以及用于电力指数N = 1和2的化学反应的顺序（1≤q≤4），在纳米粒子的体积分数和prandtl数的固定值下。描绘图表和表格，用于响应各种嵌入参数。当前问题的突出显示说明，随着磁场和化学反应的增加，传质速率增加。此外，利用功率指数数量的体积发热值的系数增加，尤塞格数概况减小，即，n = 1和2。

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