摘要
基于现有的非定常雷诺平均N-S方程的求解方法,研究与发展了脱体涡模拟方法(DES)。在紊流附面层内用RANS方法,湍流模型采用S-A模型,在其他区域结合S-A模型运用Smagorinski的LES模型,并将S-A模型中的物面耗散项进行适当的改进,使得改进的模型既充当了RANS中的S-A紊流模型,又充当了Smagorinski大涡模拟模型。为验证所发展方法的有效性,将研究的DES方法应用到一些典型流场计算中,并与已有结果或实验结果进行比较。
Based on the in-housed methods of unsteady Reynolds average N-S equations,detached eddy simulation（DES） is developed in this paper.Solver of RANS with S-A turbulence model is used in the turbulent boundary layer,while,in the other domains of flow fields,Smagorinski′s LES model combining with S-A model is implemented,which makes the improved model be used as S-A model and Smagorinski large eddy simulation model.To verify the effectiveness of the method developed,DES in this study is applied to some typical flow field calculations and some comparisons are also made by the references′ results and experimental results.
出处
《航空计算技术》
2011年第1期9-13,共5页
Aeronautical Computing Technique
基金
国家自然科学基金资助项目(10902050)
航空科学基金资助项目(20101452017)
中国博士后基金资助项目(20100481138)
