摘要
本文利用数值模拟,探讨了普朗特数Pr=0.0272时有水平流动的Rayleigh-Benard对流结构.当水平流动强度Re=0时,发现定常对流的多重稳定性.当Re ≠0时,Rayleigh-Benard(RB)对流中存在三种对流斑图.它们的出现依赖于水平流动强度Re和相对瑞利数r.与Pr=6.99相比,在Pr=0.0272时的行波具有不同的动力学特性.
Using a two-dimensional fluid mechanics numerical simulation, Rayleigh-Benard convection structure with horizontal flow at Prandtl number Pr =0.0272 is studied in this paper. For the horizontal flow Re =0, the multistability of the stationary overturning convection is found. Three types of convection patterns exist in Rayleigh-Benard（RB） convection with horizontal flow at Re ≠0. The appearance of the convection patterns depends on Re and reduced Rayleigh number r. The traveling waves at Pr =0.0272 have different dynamic characteristics when compared with those at Pr =6.99.
出处
《力学季刊》
CSCD
北大核心
2016年第3期551-558,共8页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(10872164)
陕西省重点学科建设专项资金项目(00X901)
