Flow visualization and pattern dynamics in Benard-Marangoni convection

被引：0

作者：

Rahal, Samir ^{[1
]}

Azuma, Hisao ^{[1
]}

机构：

[1] Univ Batna, LESEI, Dept Mech Engn, Batna 05000, Algeria

来源：

Proceedings of the 8th Biennial Conference on Engineering Systems Design and Analysis, Vol 4 | 2006年

关键词：

convection; patterns; interferometry; inftared thermography; dynamics;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this experimental work is to study the pattern dynamics in the Benard-Marangoni convection. The free surface deformation fields were visualized by interferometry and the temperature fields by infrared thermography. The influence of the aspect ratio, Rayleigh, Biot and Prandtl numbers, was considered. More dynamics are found to be induced by increasing the Biot number. Conversely, increasing the Prandtl number reduces the dynamics. The deformation magnitude and the wavenumber increase as functions of the gradient of temperature. Two behaviours of the deformation, as a function of Prandtl and Biot numbers, were observed, depending on the value of the gradient of temperature.

引用

页码：231 / 239

页数：9

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