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Natural Convection for Air and Molten Gallium in Square- and elbowshaped Enclosures

机译:方形和弯头壳体的空气和熔融镓的自然对流

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Natural convection flow of air and molten gallium in square and elbow-shaped enclosures is studied by a two-dimensional numerical scheme developed by the lead author. The dependence of the flow field and Nusselt number (Nu) on the Rayleigh (Ra) and Prandtl (Pr) numbers is examined in both enclosures. Results are obtained with sufficiently large Rayleigh numbers to observe transition from steady to damped or undamped oscillatory, and chaotic flow. Constant and oscillatory heat transfer rates are compared in both enclosures for air (Pr=0.71) and molten gallium (Pr=0.024).
机译:通过引线作者开发的二维数值方案研究了方形和弯头外壳中的空气和熔融镓的自然对流流。 在两个外壳中检查了流场和NUSERET数(NU)对瑞利(RA)和PRANDTL(PR)编号的依赖性。 使用足够大的瑞利数获得结果,以观察到从稳定到阻尼或未阻尼的振荡的过渡和混沌流动。 在空气(PR = 0.71)和熔融镓(PR = 0.024)中,将恒定和振荡传热速率进行比较。

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