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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical simulation of natural convection in a triangular enclosure with caterpillar (C)-curve shape hot wall
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Numerical simulation of natural convection in a triangular enclosure with caterpillar (C)-curve shape hot wall

机译：毛毛虫（C）形曲线热壁的三角形罩内自然对流的数值模拟

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摘要

The present work enlightens the study of laminar natural convection in an isosceles right-angled triangular cavity filled with water. The bottom wall of the cavity contains a caterpillar (C)-curve shape wavy wall, having different width (w = 0.20b, 0.25b, 0.33b and 0.50b) and aspect ratio (δ) with 0 ≤ δ ≤ 0.15. Vertical and incline walls of the cavity are considered individually and together for cooling purpose. The physical model is solved to examine the effect of constrained parameters such as hot wall profiles, configurations of cold walls and Rayleigh number (10~5-10~7) on the fluid flow and heat transfer. The study is carried out numerically by commercially available software FLUENT 6.3. The deviation in the flow pattern and temperature profile is displayed by streamlines and isotherms contours whereas the variation in heat transfer rate is presented by local and average Nusselt number. It is found from the investigation that the heat transfer rate is enhanced significantly for caterpillar curved shape wavy wall than the flat hot wall. Moreover, the rate of heat transfer is varied profoundly with the location of cold walls.
机译：本工作启发了充满水的等腰直角三角形空腔中层流自然对流的研究。空腔的底壁包含一条毛虫（C）曲线的波浪形壁，其宽度（w = 0.20b，0.25b，0.33b和0.50b）和宽高比（δ）分别为0≤δ≤0.15。空腔的垂直壁和倾斜壁被单独考虑或一起考虑用于冷却目的。求解物理模型，以检查诸如热壁轮廓，冷壁构造和瑞利数（10〜5-10〜7）等约束参数对流体流动和传热的影响。该研究是通过商用软件FLUENT 6.3进行的。流线和等温线等高线显示流型和温度曲线的偏差，而局部和平均努塞尔数表示传热速率的变化。从研究中发现，与平坦的热壁相比，履带弯曲的波浪形壁的传热速率显着提高。而且，热传递的速率随冷壁的位置而有很大变化。

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