LARGE EDDY SIMULATION OF COMPRESSIBLE TURBULENT BOUNDARY LAYER

摘要：

Large eddy simulation(LES) is a very promising technique for the prediction of turbulent flows in industrial and environmental application. An important issue for LES is the development of SGS models using evaluate unresolved small scales. In this paper, a nonlinear SGS model is presented based on the Caylay-Hamilton theory and two basic assumptions.There are two parameters in our model which are determined analytically. A supersonic flat plate boundary layer at Reynolds number Re of 2.5×107 m-1 based on freestream conditions is investigated at Mach number of 2.25. The relation between the numerical results and the model parameters is discussed, and optimal parameters is advised for better accuracy. The results shown that, the profile of the mean velocity and the friction coefficient are in good agreement with EXP data using the nonlinear SGS model

作者: Bin Li SongPing Wu

作者单位: School of Aeronautic Science and Engineering, Beihang University

会议类型: 国际会议

会议名称: 第一届喷气推进与动力工程国际会议(Proceedings of the 1st International Symposium on Jet Propulsion and Power Engineering)

会议地点: 昆明

会议语种:英文

页码: 693-697

在线出版日期: 2006-09-18（万方平台首次上网日期，不代表论文的发表时间）