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首页> 外文期刊>International Journal of Heat and Mass Transfer >The effect of a barrier on laminar convection in a box with differentially heated endwalls
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The effect of a barrier on laminar convection in a box with differentially heated endwalls

机译：壁障对带有不同加热端壁的盒子中层流对流的影响

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摘要

Laminar free convection is studied experimentally in a box with differentially heated endwalls that is divided by a barrier into two connected chambers. We investigate how the steady-state circulation, the temperature field and the transport of heat and mass depend on the height and position of the barrier. We find that the temperature fields in the two chambers are very different and that a complex flow structure develops, featuring a fast overflow of the barrier, a number of shear layers above the barrier, partial boundary layer detrainment on the cold endwall, and a slow upwelling in the cooler of the two chambers. The heat transport is found to have little dependence on the barrier height or barrier position, and begins to decrease rapidly only when the gap above the barrier becomes small.
机译：层流自由对流是在带有差异加热端壁的盒子中进行实验性研究的，该盒子的壁垒被屏障分成两个相连的腔室。我们研究稳态循环，温度场以及热量和质量的传输如何取决于屏障的高度和位置。我们发现，两个腔室中的温度场非常不同，并且形成了复杂的流动结构，其特征是屏障的快速溢出，屏障上方的许多剪切层，冷端壁上的部分边界层减损以及缓慢的在两个房间的冷却器中上升。发现热传递对障碍物高度或障碍物位置几乎没有依赖性，并且仅当障碍物上方的间隙变小时才开始迅速减小。

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