Experimental Studies on the Non-linear Development of the Instability in the Natural Convection Boundary Layer

颜大椿
张汉勋

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Publication date

January 2002

DOI

10.3321/j.issn:0479-8023.2002.01.004

Publisher

北京大学学报自然科学版

Journal

issn:0479-8023

Abstract

自然对流边界层的稳定性由浮力振型失稳开始,并随着浮力振型的湍流化进入非线性阶段,与此同时,无粘性振型在外层开始失稳.实验结果表明,修正格拉斯霍夫数(Grashof)G>100时,浮力振型破碎并在最大速度点附近形成湍流层;当G>170时,外层无粘性振型湍流化而近壁层的粘性不稳定性开始失稳,形成中层-外层-内层三种流动不稳定机制此消彼长的发展过程.国家自然科学基金中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)0118-233

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Experimental Studies on the Non-linear Development of the Instability in the Natural Convection Boundary Layer

Abstract

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Experimental Studies on the Non-linear Development of the Instability in the Natural Convection Boundary Layer

Abstract

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