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Heat Transfer Research
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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018016266
pages 659-673

INVESTIGATION OF PERFORMANCE OF DIFFERENT SGS MODELS IN THREE-DIMENSIONAL LES OF COMPRESSIBLE TEMPORAL MIXING LAYER

Saber Yekani Motlagh
School of Mechanical Engineering, Urmia University of Technology, Band Street, Urmia, West Azerbaijan, Iran

ABSTRAKT

In this research, performance of one-equation subgrid scale stress models of LES in simulating three-dimensional compressible temporal mixing layers has been studied. For 3D flows at Ma = 0.8 the results of Smagorinsky, Yoshizawa's one-equation, dynamic one-equation, and Spalart–Allmaras one-equation models are compared with DNS data. Concerning the results of 3D flows, generally it is clear that the performance of the Spalart–Allmaras model is better than those of other one-equation models. Moreover, 3D flow is solved using the Spalart–Allmaras model at different Mach numbers, and turbulence characteristics and coherent structures have been investigated.


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