摘要
本研究中建立了以晶体生长系统为基础的数学物理模型,该模型为一个长高比为2∶1的方腔内的热对流,该热对流由两种驱动力引起,即浮力(由Grashof数来描述)与表面张力(由Marangoni数来描述)。大量的数值模拟显示,不同的Grashof数与Marangoni数组合产生不同的流动情况,且一个合适的表面张力能够抑制由浮力引起的热对流不稳定性。
A physical and mathematical model based on the Czochlarski crystal growth system is designed. The model is used to simulate the thermal convection in a cavity of length to height being 2 to 1. The thermal convection is driven by two forces： buoyancy, described by Grashof number Gr, and surface tension, described by Marangoni number Ma. The numerical simulations show that various flow regimes occurred under various sets of Gr and Ma. It is predicted that the instability of thermal convection can be suppressed by proper surface tension.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2007年第2期55-57,共3页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(50576079)
