Kang Jinfen, Prasianakis Nikolaos I, Mantzaras John
Combustion Research Laboratory, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May;87(5):053304. doi: 10.1103/PhysRevE.87.053304. Epub 2013 May 21.
A lattice Boltzmann model for thermal gas mixtures is derived. The kinetic model is designed in a way that combines properties of two previous literature models, namely, (a) a single-component thermal model and (b) a multicomponent isothermal model. A comprehensive platform for the study of various practical systems involving multicomponent mixture flows with large temperature differences is constructed. The governing thermohydrodynamic equations include the mass, momentum, energy conservation equations, and the multicomponent diffusion equation. The present model is able to simulate mixtures with adjustable Prandtl and Schmidt numbers. Validation in several flow configurations with temperature and species concentration ratios up to nine is presented.
推导了一种用于热气体混合物的格子玻尔兹曼模型。该动力学模型的设计方式结合了之前两篇文献模型的特性，即：(a) 单组分热模型和 (b) 多组分等温模型。构建了一个用于研究涉及具有大温差的多组分混合流的各种实际系统的综合平台。控制热流体动力学方程包括质量、动量、能量守恒方程以及多组分扩散方程。本模型能够模拟具有可调普朗特数和施密特数的混合物。给出了在温度和物种浓度比高达九的几种流动配置下的验证结果。
