直角三角形空腔内铜-水纳米流体的磁流体自然对流换热

Q3 Engineering
I. Tarikul, P. Nazma
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引用次数: 6

摘要

对均匀加载Cu-H2O纳米流体的直角三角形空腔内的自由对流和温度传递进行了数值研究,包括水平侧的加热边界条件。立边在低热下冷却,而三角形的斜边是隔热的。采用Galerkin加权残差有限元方法求解了具有控制性的无量纲高度非线性偏微分方程。使用流线等值线、等温线等值线和平均努塞尔数作为命名为纳米颗粒体积分数、瑞利数和哈特曼数的采样参数,展示了模拟的数值结果。结果表明,温度传递值随着哈特曼数的增加而降低,而随着浮力驱动参数瑞利数的增加则显著提高。此外,与非均匀热边界条件(情况II和情况III)相比,在均匀加热边界条件下(情况I)观察到极好的平均温度传递。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydromagnetic Natural Convection Heat Transfer of Copper-Water Nanofluid within a Right-Angled Triangular Cavity
This investigation on free convection flow and temperature transfer within a right-angled triangular cavity loaded uniformly by Cu-H2O nanofluid including heated boundary conditions at horizontal side is performed numerically. The standing side is cooled at low heat while the hypotenuse of the triangular is insulated. The governing non-dimensional highly non-linear partial differential equations are performed by employing Galerkin weighted residual finite element method. The simulated numerical findings are exhibited using streamline contours, isotherm contours and average Nusselt number for the sampling parameters named nanoparticles volume fraction, Rayleigh number, and Hartmann number. The outcome demonstrates temperature transfer value reduces for the enhancement of Hartman number whereas improve significantly for the increase of buoyancy driven parameter Rayleigh number. Also, an excellent average temperature transfer is observed for uniform heated boundary condition (case I) compared to non-uniform thermal boundary conditions (case II & case III).
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