| Title | Visualization of large-scale structures in spatially developing compressible mixing layers |
| Authors | Wang, Tiejin Shi, Xiaotian Zhang, Guiru |
| Affiliation | Peking Univ, State Key Lab Turbulence & Complex Syst, Coll Engn, Beijing 100871, Peoples R China. China Acad Aerosp Aerodynam, Beijing 100074, Peoples R China. |
| Keywords | Compressible mixing layers Discontinuous Galerkin method Direct numerical simulation Convective Mach number NUMERICAL-SIMULATION SHEAR LAYERS CONSERVATION-LAWS FLOW-FIELDS GROWTH-RATE TURBULENCE SYSTEMS |
| Issue Date | 2013 |
| Publisher | journal of visualization |
| Citation | JOURNAL OF VISUALIZATION.2013,16,(3),219-227. |
| Abstract | Large-scale structures in two- and three-dimensional, spatially developing, compressible mixing layers are visualized. The convective Mach number Mc is prescribed to be 0.4 and 0.8. Direct numerical simulations were performed using a Discontinuous Galerkin method. Special attention is paid on the panorama of spatial evolution of large-scale structures, as well as on the compressibility effect on these structures. Fine structures such as the sonic waves at the inlet, and shocklet structures for the Mc = 0.8 case are also visualized. For the three-dimensional cases, in order to show the spatial evolution of the large-scale structures more clearly, both the and Q (2) structure extraction methods colored with stream-wise velocity magnitude are utilized. The "H-type" secondary instability structure and the "forest" structures are evident. It is found that the method gives better results in the case of high compressibility effect shear flows. |
| URI | http://hdl.handle.net/20.500.11897/154445 |
| ISSN | 1343-8875 |
| DOI | 10.1007/s12650-013-0173-2 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 湍流与复杂系统国家重点实验室 |
