湍流中被动标量以及颗粒离散相的湍动热扩散和气压扩散。
Turbulent thermal diffusion and barodiffusion of passive scalar and dispersed phase of particles in turbulent flows.
作者信息
Pandya R V R, Mashayek F
机构信息
Department of Mechanical Engineering, University of Illinois at Chicago, 842 West Taylor Street, Chicago, Illinois 60607, USA.
出版信息
Phys Rev Lett. 2002 Jan 28;88(4):044501. doi: 10.1103/PhysRevLett.88.044501. Epub 2002 Jan 9.
It is shown that direct interaction approximation closure solutions for passive scalar and dispersed inertial particles in compressible turbulent flows result in the phenomena, proposed by Elperin et al. [Phys. Rev. E 58, 3113 (1998)], of turbulent thermal diffusion and turbulent barodiffusion. A more rigorous analysis of Lagrangian history direct interaction approximation for the dispersed phase in the kinetic approach framework is used to accurately quantify the phenomena.
结果表明，可压缩湍流中被动标量和离散惯性粒子的直接相互作用近似封闭解导致了由埃尔佩林等人[《物理评论E》58, 3113 (1998)]提出的湍流热扩散和湍流气压扩散现象。在动力学方法框架内，对分散相的拉格朗日历史直接相互作用近似进行了更严格的分析，以准确量化这些现象。
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