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一种二维自然对流问题的迭代计算方法 总被引:5,自引:0,他引:5
本文对二维自然对流问题给出了一种迭代计算方法。由于该格式是稳定的,同时在总体上采用了迭代过程以及用速度分量计算壁面漩涡度的计算公式(17),在一定程度上提高了计算的精度。因此,该方法可适用于高Ra数的层流自然对流问题的研究。 相似文献
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Our newly developed CESE MHD model is used to simulate sun-earth connection event with the well-studied 12 May 1997 CME event as an example. The main features and approximations of our numerical model are as follows: (1) The modifed conservation element and solution element (CESE) numerical scheme in spherical geometry is implemented in our code. (2) The background solar wind is derived from a 3D time-dependent numerical MHD model by input measured photospheric magnetic fields. (3) Transient disturbances are derived from solar surface by introducing a mass flow of hot plasma. The numerical simulation has enabled us to predict the arrival of the interplanetary shock and provided us with a relatively satisfactory comparison with the WIND spacecraft observations. 相似文献
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