Numerical simulation of large scale structures and compressibility effect in compressible mixing layers with a discontinuous Galerkin method
Article
Shi, X, Wang, W, Zhang, G et al. (2016). Numerical simulation of large scale structures and compressibility effect in compressible mixing layers with a discontinuous Galerkin method
. 34(2), 224-231. 10.7638/kqdlxxb-2016.0004
Shi, X, Wang, W, Zhang, G et al. (2016). Numerical simulation of large scale structures and compressibility effect in compressible mixing layers with a discontinuous Galerkin method
. 34(2), 224-231. 10.7638/kqdlxxb-2016.0004
Large scale structures in two or three dimensional spatially developing compressible mixing layers, as well as compressibility effect in supersonic mixing layers under the convective Mach number Mc=0.4 and Mc=0.8 respectively are numerical studied with a discontinuous Galerkin method. Special attention is paid on the panorama of spatial evolution of large scale structures and the compressibility effect. The λ2 structure extraction method is utilized in this paper, the "forest" structures are evident. The turbulence and Reynolds stress of the mixing layers are found decreasing with Mc in current simulations, which is expected to offer useful guidance for turbulent modeling in RANS and LES. The current study also shows the success of discontinuous Galerkin method to do compressible turbulence simulation.
