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首页> 外文会议>HT2008;ASME summer heat transfer conference >NUMERICAL STUDY OF NATURAL CONVECTION IN A PARTITIONED CAVITY
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NUMERICAL STUDY OF NATURAL CONVECTION IN A PARTITIONED CAVITY

机译：分腔内自然对流的数值研究

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The purpose of this study is to investigate the effect of insulated horizontal baffle placed at the hot wall of a differentially heated square cavity. The vertical walls are at different temperatures while the horizontal walls are adiabatic. In our formulation of governing equations, mass, momentum and the energy equations are applied to the cavity and the baffles. To solve the governing differential equations a finite volume code based on Patankar's SIMPLER method is utilized [1]. The Results are presented for Rayleigh number from 10~4 up to 10~6 and are in form of streamlines, isotherms and Nusselt number. The baffle causes that at low Rayleigh number the horizontal isotherms are replaced by nearly vertical ones, specially around the baffle. Also it is found that thermal boundary layers are thickened, and the temperature gradients at the cold wall are reduced from their values for the case without baffle and this implies that a reduction in the heat transfer through the cavity occurs.
机译：这项研究的目的是研究放置在差热方形腔体热壁上的隔热水平挡板的作用。垂直壁处于不同的温度，而水平壁是绝热的。在我们制定的控制方程式中，质量，动量和能量方程式适用于型腔和导流板。为了解决控制微分方程，利用了基于Patankar的SIMPLER方法的有限体积代码[1]。结果以瑞利数从10〜4到10〜6的形式给出，并以流线，等温线和Nusselt数的形式表示。挡板导致在较低的瑞利数下，水平等温线被几乎垂直的等温线所代替，尤其是在挡板周围。还发现，热边界层变厚，冷壁处的温度梯度从没有挡板的情况下的值减小，这意味着通过空腔的热传递减少。

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