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首页> 外文会议>HTD-vol.376-2; ASME(American Society of Mechanical Engineers) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US) >PARAMETRIC RESONANCE CONVECTION IN A MODULATED GRAVITY FIELD
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PARAMETRIC RESONANCE CONVECTION IN A MODULATED GRAVITY FIELD

机译：重力场中的参数共振对流

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摘要

Experiments were performed to examine the influence of vertical oscillations of inertia field on convection instability and flows patterns in a horizontal fluid layer heated from one wide side and cooled from another one. Two cases are considered: when the fluid layer was heated from below and from above. The temperature sensors were used for measurement of heat transport across the layer. Visualization of flow patterns was provided by stroboscopic lighting and powdered aluminum. The parametric resonance excitation of convection under heating from above, as well as dynamical stabilization of statically unstable states, long-wave mode and parametric resonance under heating from below realized. The earlier unknown instability regions and convection structures are discovered. The results indicate that with the use of an oscillating inertia field it is possible to control the convection stability, intensity of the heat transfer and the structure of convection motions.
机译：进行了实验，以检验惯性场的垂直振荡对对流不稳定性的影响，以及从一侧加热而另一侧冷却的水平流体层中的流型。考虑两种情况：从下方和上方加热流体层。温度传感器用于测量整个层的热传递。频闪灯和铝粉提供了流动模式的可视化。从上方加热下对流的参数共振激发，以及从下方加热下静态不稳定状态，长波模式和参数共振的动态稳定。发现了较早的未知不稳定区域和对流结构。结果表明，利用振荡惯性场，可以控制对流稳定性，传热强度和对流运动的结构。

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