摘要
从底部加热的薄流体层的对流是研究混合流体对流斑图特性的典型模型之一并已被广泛的研究.研究集中在具有弱SORET效应的混合流体行进波对流的斑图动力学方面.利用MAC算法通过求解二维流体力学扰动方程组进行了数值模拟.给出了具有弱SORET效应的混合流体对流的瞬态的对传波(Counterpropagating wave),Blinking行进波,向局部行进波的过渡过程,局部行进波的时空结构及定常行进波的对流场的结构,并进一步研究了斑图的动力学特性等.
Convection in a thin, horizontal fluid layer heated from below is one of the models for studying patterns of convection in binary fluicl mixtures. In this paper, our interests focus on the pattern dynamics of the travelling wave convection in the binary fluid mixtures with weak Soret effect. The numerical simulations have been performed by solving the two-dimensional perturbation equations of hydrodynamics using the MAC method. The patterns of the transient counter- propagating wave, the blinking traveling wave, the transition process to localized traveling wave （LTW）, the spatio-temporal structure of localized traveling wave convection and the structure of stationary overturning convection in the binary fluid mixtures with weak Sorer effect are given, and the pattern dynamics further discussed.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2008年第6期868-873,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金项目(10872164)
教育部留学回国人员基金项目(220542)
陕西省教育厅专项计划项目(05JK271)
西安理工大学科学基金项目(210532)
关键词
行进波
对流
数值模拟
斑图
混合流体
弱Soret效应
traveling wave
convection
numerical simulation
pattern
binary fluid mixtures
weakly Soret effect
