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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer augmentation in a two-sided lid-driven differentially heated square cavity utilizing nanofluids
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Heat transfer augmentation in a two-sided lid-driven differentially heated square cavity utilizing nanofluids

机译：利用纳米流体在两侧盖驱动的差热方腔中的传热增强

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摘要

The behaviour of nanofluids is investigated numerically inside a two-sided lid-driven differentially heated square cavity to gain insight into convective recirculation and flow processes induced by a nanofluid. A model is developed to analyze the behaviour of nanofluids taking into account the solid volume fraction χ. The transport equations are solved numerically with finite volume approach using SIMPLE algorithm. Comparisons with previously published work on the basis of special cases are performed and found to be in excellent agreement. The left and the right moving walls are maintained at different constant temperatures while the upper and the bottom walls are thermally insulated. Three case were considered depending on the direction of the moving walls. Governing parameters were 0.01 < Ri < 100 but due to space constraints only the results for 0.1 < Ri < 10 are presented. It is found that both the Richardson number and the direction of the moving walls affect the fluid flow and heat transfer in the cavity. Copper-Water nanofluid is used with Pr = 6.2 and solid volume fraction χ is varied as 0.0%, 8%, 16% and 20%. Detailed results are presented for flow pattern and heat transfer curves.
机译：在两侧盖驱动的差热方形腔内，对纳米流体的行为进行了数值研究，以了解由纳米流体引起的对流再循环和流动过程。考虑固体体积分数χ，开发了一个模型来分析纳米流体的行为。使用SIMPLE算法，通过有限体积法数值求解了输运方程。根据特殊情况与以前发表的作品进行了比较，发现非常吻合。左右移动壁保持在不同的恒定温度下，而上壁和底壁则是隔热的。根据移动壁的方向考虑了三种情况。控制参数为0.01

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