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Stabilities of combined radiation and Rayleigh-Benard-Marangoni convection in an open vertical cylinder

机译:敞开式垂直圆柱体中组合辐射和Rayleigh-Benard-Marangoni对流的稳定性

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This paper studies the combined radiation and natural convection in an open vertical cylinder. The cylinder is heated through its side-wall at a constant heat flux and cooled at the top surface via radiation. The high order finite difference method is used to simulate the fluid flow and heat transfer inside the cylinder and the internal radiation is solved using discontinuous finite element method. The two numerical methods are coupled through an iterative process. Based on the numerical simulations, a linear stability analysis is carried out to investigate how the internal radiation changes the stability of the flow.
机译:本文研究了开放式垂直圆柱体中的辐射与自然对流的组合。圆柱体以恒定的热通量通过其侧壁加热,并通过辐射在顶面冷却。使用高阶有限差分法模拟圆柱体内的流体流动和传热,并使用不连续有限元法求解内部辐射。这两个数值方法通过迭代过程耦合。基于数值模拟,进行了线性稳定性分析,以研究内部辐射如何改变流动的稳定性。

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