Coherent structures and wavepackets in subsonic transitional turbulent jets 
期刊名称Acta Mechanica Sinica
作者Yu Lv; Matthias Ihme
摘要This article focuses on the development of a discontinuous Galerkin (DG) method for simulations of multicomponent and chemically reacting flows. Compared to aerodynamic flow applications,in which DG methods have been successfully employed,DG simulations of chemically reacting flows introduce challenges that arise from flow unsteadiness,combustion,heat release,compressibility effects,shocks,and variations in thermodynamic properties. To address these challenges,algorithms are developed, including an entropy-bounded DG method,an entropyresidual shock indicator,and a new formulation of artificial viscosity. The performance and capabilities of the resulting DG method are demonstrated in several relevant applications, including shock/bubble interaction,turbulent combustion, and detonation. It is concluded that the developed DG method shows promising performance in application to multicomponent reacting flows. The paper concludes with a discussion of further research needs to enable the application of DG methods to more complex reacting flows.
关键词Discontinuous Galerkin method; High-order schemes; Reacting flows; Multicomponent flows
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基金项目This work was supported by an Early Career Faculty grant from NASA's Space Technology Research Grants Program. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center.
作者地址Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA

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