全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
航空学报  2013 

一种滤波SST方法在翼型深失速模拟中的应用

DOI: 10.7527/S1000-6893.2013.0187, PP. 979-987

Keywords: 滤波方法,剪切应力,大涡模拟,雷诺方程,混合RANS/LES方法

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了提高原始剪切应力输运(SST)湍流模型对于分离流动的求解精度,将大涡模拟(LES)中的滤波因子和SST方程相结合构造出一种滤波SST方法,利用湍流尺度对流场求解区域进行划分,近壁面附近的稳态流动由湍流模型控制,远壁面采用LES方法进行模拟。与传统混合RANS/LES方法相比,该方法的特点是滤波因子的选取不再依赖于网格尺度,可以有效地降低网格诱导分离现象发生的概率。采用该方法对NACA0021翼型深失速特性进行了仿真研究,对比了非定常雷诺平均Navier-Stokes(URANS)方法和SST-DES方法,从仿真结果可以看出滤波SST方法有效地激活了分离区域的脉动,充分展现了分离的三维特性;同时算例求解结果证明该方法的精度高于URANS方法,与试验结果吻合较好,显示其具有一定的工程应用价值。

References

[1]  Wilcox D C. Reassessment of the Scale-Determining Equation for Advanced Turbulence Models[J]. AIAA Journal,1988,26(11):1299-1310.
[2]  Johnson D A, King L S.A Mathematically Simple Turbulence Closure Model for Attached and Separated Turbulent Boundary Layers[J]. AIAA Journal, 1985,23(11):1684-1692.
[3]  Spalart P R, Jou W H, M Strelets, Allmaras S R. Comments on the Feasibility of LES for Wings and on a Hybrid RANS/LES approach[C] Los Angles:Greyden Press ,1997.
[4]  Squires K D, Forsythe J R, Morton S A. Progress on Detached Eddy Simulation of Massively Separated Flows[R]. AIAA 2002-1021, 2002.
[5]  Harshavardhan, Christopher J Roy. Preliminary Detached Eddy Simulation of a Generic Tractor/Trailer[R]. AIAA 2006-3858, 2006.
[6]  M Strelets. Detached Eddy Simulation of Massively Separated Flows[R].AIAA 2001-0879, 2001.
[7]  Spalart P R, Deck S, Shur. A new version of detached-eddy simulation resistant to ambiguous grid densities[J]. Theoretical and Computational Fluid Dynamics, 2006,20(3):181-195.
[8]  F R Menter, M Kuntz, R Langtry. Ten Years of Industrial Experience with the SST Turbulence Model[J]. Turbulence Heat and Mass Transfer, 2003, 4(1):625-632.
[9]  Menter F R. Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications[J]. AIAA Journal, 1994,32(8):1598-1605.
[10]  Kim J, Moin P, Moser R. Turbulence statistics in fully developed channel flow at low Reynolds number[J]. Fluid Mechanics, 1987, 177:133-166.
[11]  Rogers, Moin P, Reynolds W C. The structure and modeling of the hydrodynamic and passive scalar fields in homogeneous turbulent shear flows[R]. Report No. TF-25, Stanford: University of California, 1986.
[12]  Canuto V M, Cheng Y. Determination of the Smagorinsky-Lilly constant[J]. Physics Fluids, 1997, 9(5): 1368-1378.
[13]  Swalwell K E. The Effect of Turbulence on Stall of Horizontal Axis Wind Turbines[D]. Monash: University of Monash,2005.
[14]  Spalart P R. Young Person`s Guide to Detached-Eddy Simulation Grids[R]. NASA Technical Report 211032, 2001
[15]  Hunt J, Wray A and Moin P. Proceedings of the 1988 Summer Program[R]. Stanford:Center for Turbulence Research, 1988.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133