Numerical Solution of a Maximum-Entropy-Based 14-Moment Closure for Multi-Dimensional Flows
The predictive capabilities of a new,14-moment,maximum-entropy-based,interpolative closure are explored for multi-dimensional non-equilibrium flows with heat transfer.Unlike the maximum-entropy closure on which it is based,the interpolative closure provides closed-form expressions for the closing fluxes.While still presenting singular solutions in regions of realizable moment space,the interpolative closure proves to have a large region of hyperbolicity while remaining tractable.Furthermore,its singular nature is deemed advantageous for practical simulations.A finite-volume procedure is proposed and described for the numerical solution of the 14-moment closure on two-dimensional computational domains,followed by a presentation and discussion of the results of a numerical dispersion analysis.The first multi-dimensional applications of the closure are then examined for several canonical flow problems in order to provide an assessment of the capabilities of this novel closure for a range of non-equilibrium flows.
Non-equilibrium gas dynamics Transition-regime gas dynamics Hyperbolic moment closures Kinetic theory
Boone R. Tensuda James G. McDonald Clinton P. T. Groth
University of Toronto Institute for Aerospace Studies 4925 Dufferin Street, Toronto, Ontario, Canada Department of Mechanical Engineering, University of Ottawa 161 Louis Pasteur, Ottawa, Ontario, Canad
国际会议
The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)
成都
英文
1-17
2014-07-25（万方平台首次上网日期，不代表论文的发表时间）