Experimental study of Marangoni-Benard convection in a liquid layer induced by evaporation

被引：56

作者：

Chai, AT ^{[1
]}

Zhang, NL ^{[1
]}

机构：

[1] NASA, Lewis Res Ctr, Cleveland, OH 44135 USA

来源：

EXPERIMENTAL HEAT TRANSFER | 1998年 / 11卷 / 03期

关键词：

D O I：

10.1080/08916159808946561

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Marangoni-Benard instability and convection in Evaporating liquid layers have been studied experimentally through flow visualization and temperature profile measurement. Benard cells have been observed in an evaporating Chin liquid layer whether it is heated, adiabatic, or cooled from below. This experimental study has revealed a different mechanism from the traditional Rayleigh-Benard and Marangoni-Benard instabilities and convections, which require a negative temperature gradient in the thin liquid layer. Evaporation rate and enthalpy of evaporation have been found to be important parameters of instability and convection in an evaporating liquid layer. A modified form of Marangoni number, Ma*, is proposed and its critical values, Ma(c)*, for alcohol and Freon-113 evaporating layers are determined experimentally. A quantitative comparison between Ma* and the traditional Marangoni number, Ma, shows that Ma* is an adequate indicator of the stability status in evaporating liquid layers.

引用

页码：187 / 205

页数：19

共 18 条

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[Anonymous], CRC HDB THERMOPHYSIC

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[3]

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[4]

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