Two dimensional hydrothermal waves in an extended cylindrical vessel
Two dimensional hydrothermal waves in an extended cylindrical vessel
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DOI：
10.1007/s100510170352
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
N. Garnier;A. Chiffaudel
中科院分区：
文献类型：
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作者：
N. Garnier;A. Chiffaudel
我们报告了热毛细驱动流中热液波不稳定性的实验结果。这些波表现为超临界不稳定性。在较大的流体深度，史密斯和戴维斯的传统预测-平面波称为HW1 -被观察到。对于较小的深度，即对于较大的纵横比，报告了一种新的空间行为，可以解释为一种新的不稳定性。这种新的不稳定性定位于细胞的中心，其空间结构接近于目标，即。纯径向波。我们将这些热液波称为HW2.47.54。+ rPattern选择;模式形成- 47.20。- k水动力稳定性- 47.27。连接和传热- 47.35。+ iHydrodynamic波
We report experimental results for hydrothermal waves instability in thermocapillary-driven flow in an extended cylindrical geometry. The waves are shown to appearviaa supercritical Ioinstability. At larger fluid depth, the conventional predictions of Smith and Davis - planar waves referred to as HW1 - are observed. For smaller depth,i.e.for larger aspect ratios, a new kind of spatial behavior is reported which may be interpreted as a new instability. This new instability is localized in the center of the cell and its spatial structure close to onset resembles targets,i.e.purely radial waves. We refer to these hydrothermal waves as HW2.47.54.+rPattern selection; pattern formation – 47.20.-kHydrodynamic stability – 47.27.TeConvection and heat transfer – 47.35.+iHydrodynamic waves