Subcritical transition to quasi-traveling waves in binary fluid convection confined in a cylindrical container: preliminary results

E. Millour; E. Tric; G. Labrosse

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Subcritical transition to quasi-traveling waves in binary fluid convection confined in a cylindrical container: preliminary results

机译：局限在圆柱形容器中的二元流体对流中的亚临界转变为准行波：初步结果

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2D numerical experiments have been performed on the convection of a binary fluid confined in an axisymmetrical cylinder of aspect ratio 2. The Oberbeck-Boussinesq equation with Soret effect are Solved with a pseudo-spectral method. A description Of the different transitions between conductive, Oscillatory and stationary states is given. A first des- Cription of the solutions of the periodic states displays The presence of stationnary and travelling waves in This cavity. That travelling nature depends strongly On the value of the Rayleigh number. We also present A model to quantify more precisely the travelling na- Ture of these waves.

机译：对局限在纵横比为2的轴对称圆柱体中的二元流体的对流进行了二维数值实验。采用拟谱方法求解了具有Soret效应的Oberbeck-Boussinesq方程。给出了导电，振荡和静止状态之间不同过渡的描述。周期状态解的第一个描述显示了此腔中存在平稳波和行波。这种旅行的性质在很大程度上取决于瑞利数的值。我们还提出了一个模型，以更精确地量化这些波的传播自然。

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《Entropie》 |1999年第218期|p.30-34|共5页
作者
E. Millour; E. Tric; G. Labrosse;
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正文语种 eng
中图分类热力工程、热机;
关键词
energtics; thermal diffusion; transitions between conductive;

机译：能量热扩散导电之间的过渡;

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Subcritical transition to quasi-traveling waves in binary fluid convection confined in a cylindrical container: preliminary results

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