Experiments on the Stability of Couette Motion with a Radial Thermal Gradient
Experiments on the Stability of Couette Motion with a Radial Thermal Gradient
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DOI：
10.1063/1.1711076
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发表时间：
1964-10
影响因子：
4.6
通讯作者：
H. Snyder;S. Karlsson
中科院分区：
文献类型：
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作者：
H. Snyder;S. Karlsson
对具有叠加径向热梯度的同轴旋转圆柱体之间的粘性流的流体动力学稳定性进行了实验研究。对于所提供的数据，外圆柱体处于静止状态并且环空很小。气缸轴线垂直；流体是水。当热梯度为零或非零时首先出现的不稳定性类型之间存在质的差异：梯度非零时的二次运动不由环形泰勒单元组成。然而，泰勒数较高时会过渡到泰勒单元。自由对流对结果影响很大。提供了有关向泰勒细胞过渡的定量数据以及首先引起不稳定的细胞的定性描述。
An experimental study has been made of the hydrodynamic stability of viscous flow between coaxial rotating cylinders with a superposed radial thermal gradient. For the data presented, the outer cylinder is at rest and the annulus is small. The axis of the cylinders is vertical; the fluid is water. There is a qualitative difference between the type of instability which first sets in when the thermal gradient is zero or nonzero: the secondary motion when the gradient is nonzero does not consist of toroidal Taylor cells. However, there is a transition to Taylor cells at a higher Taylor number. Free convection affects the results strongly. Quantitative data concerning the transition to Taylor cells are presented along with a qualitative description of the cells which first cause instability.