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首页> 外文期刊>International journal of nanomechanics science and technology >DOUBLE-DIFFUSIVE CONVECTION IN A DISSIPATIVE ELECTRICALLY CONDUCTING NANOFLUID UNDER ORTHOGONAL ELECTRIC AND MAGNETIC FIELDS: A NUMERICAL STUDY
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DOUBLE-DIFFUSIVE CONVECTION IN A DISSIPATIVE ELECTRICALLY CONDUCTING NANOFLUID UNDER ORTHOGONAL ELECTRIC AND MAGNETIC FIELDS: A NUMERICAL STUDY

机译：正交电场下耗散导电纳米流体中的双扩散对流：数值研究

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摘要

Two-dimensional double-diffusive convective flow in a duct is studied numerically. The duct is filled with electrically conducting nanofluid and subjected to mutually orthogonal static electric and magnetic fields. The one-phase Tiwari-Das model is employed to simulate nanoscale effects. The study is conducted for four different electroconductive nanofluids using water as a base fluid. The left and right plates of the enclosure are kept at different constant temperatures and concentrations. The top and bottom faces are insulated and impermeable to heat and mass transfer, respectively. The transport equations describe the velocity, temperature, and nanoparticle concentration fields. These coupled differential Navier-Stokes equations are nonlinear and therefore discretized via a robust finite difference method (FDM). The reduced difference equations are solved by incorporating the successive-over-relaxation (SOR) method. The results are shown graphically for various governing parameters. The skin friction, Nusselt and Sherwood numbers for the impact of selected electromagnetic, nanoscale, and thermophysical parameters are computed. The study is relevant to thermal power technologies, bioelectromagnetic therapy, and nuclear engineering heat transfer control.
机译：在数值上研究了管道中的二维双衍射对流流程。管道填​​充有导电纳米流体并进行相互正交的静电和磁场。用于模拟纳米级效应的单相Tiwari-DAS模型。该研究是使用水作为基础流体的四种不同的导电纳米流体进行。外壳的左和右板保持在不同的恒定温度和浓度。顶面和底面分别是绝缘和不透水的热量和传质。传输方程描述了速度，温度和纳米颗粒浓度场。这些耦合差分Navier-Stokes方程是非线性的，因此通过稳健的有限差分方法（FDM）离散化。通过结合连续放松（SOR）方法来解决降低的差分方程。结果以图形方式显示各种控制参数。计算了所选电磁，纳米级和热物理参数的影响的皮肤摩擦，NURSELT和舍伍德数。该研究与热电技术，生物电磁疗法和核工程传热控制相关。

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