The borders of existence of anomalous convection flow in the inclined square cylinder: Numerical determination

IF 0.2 Q4 PHYSICS, MULTIDISCIPLINARY
Albert N. Sharifulin , Anatoliy N. Poludnitsin
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引用次数: 1

Abstract

The article is dedicated to the study of bifurcations of stationary convection regimes in a closed, heated from below and tilted square cylinder filled with air for cases of heat-insulated and perfectly heat-conducting sidewalls. The temperature and velocity fields were obtained using grid method for inclinations from a horizontal position up to 30 degrees in the range of Rayleigh numbers up to 20-fold excess of its critical value. The limit angle of anomalous-flow existence in the cylinder with the heat-insulated walls was established to be about 3 times greater than that in the cylinder with the heat-conducting ones. In the case of the heat-conducting walls the maximum angle of the anomalous-flow existence reached 7.7 degrees at a 3.3-fold excess of the critical value of Rayleigh number.

斜方柱面内异常对流存在的边界:数值确定
本文致力于研究在一个封闭的、从下面加热的、倾斜的、充满空气的方形圆柱体中,对于隔热和完全导热的侧壁的情况下,静止对流的分岔。在瑞利数超过临界值20倍的范围内,用网格法得到了从水平位置倾斜30度的温度场和速度场。在有隔热壁的圆筒内,异常流动存在的极限角比有导热壁的圆筒大3倍左右。对于导热壁面,异常流动存在的最大角度达到7.7度,超过瑞利数临界值的3.3倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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