Abstract
In the present work we carried out the assessment of the generalized scale-similarity model ( C B - C S ) in compressible homogeneous isotropic turbulence at moderately high Reynolds numbers, by comparing with previous dynamic subgrid-scale (SGS) stress models. In an a priori test, it was shown that the SGS stress estimated using the C B - C S model had the closest agreement with the exact value, and the energy transfer between subgrid-scale energy and grid-scale energy was most accurately predicted using the C B - C S model. In an actual large-eddy simulation, it was shown that both the development of turbulent energy and the evolution of the turbulent structure, such as the vortex tube, predicted using the C B - C S model were close to those of the filtered DNS data. The primary cause for a high accuracy of the scale-similarity model was explored.
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