JOURNAL ARTICLE
矩形液池中热毛细对流起振过程的数值模拟
Year: 2010 Journal: Scientia Sinica Technologica Vol: 40 (4)Pages: 370-377 Publisher: Science China Press
Abstract
本文数值研究微重力条件下浅液池中大Pr数流体(Pr=105.6)热毛细对流的转捩过程.当液池两侧的温度差超过临界温度差时,在液池中会出现热毛细振荡对流.振荡对流的涨落值远小于时间平均值,涨落值表现为从冷端向热端传播的热流体波.起振时,涨落值的胞元分布在液层的中心区域;随着外加温度差的增加,涨落值的胞元逐渐充满液层.本文的结果显示了有限延伸矩形容器液层中热毛细对流及其起振过程与其它类型热毛细对流不同的特征
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