A RATE-DEPENDENT ALGEBRAIC STRESS MODEL FOR TURBULENCE

被引:8
作者
AHMADI, G
CHOWDHURY, SJ
机构
[1] Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY
关键词
TURBULENCE MODEL; ALGEBRAIC STRESS; RATE-DEPENDENT; REYNOLDS STRESS;
D O I
10.1016/0307-904X(91)90053-R
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Based on the stress transport model, a rate-dependent algebraic expression for the Reynolds stress tensor is developed. It is shown that the new model includes the normal stress effects and exhibits viscoelastic behavior. Furthermore, it is compatible with recently developed improved models of turbulence. The model is also consistent with the limiting behavior of turbulence in the inertial sublayer and is capable of predicting secondary flows in noncircular ducts. The TEACH code is modified according to the requirements of the rate-dependent model and is used to predict turbulent flow fields in a channel and behind a backward-facing step. The predicted results are compared with the available experimental data and those obtained from the standard k-epsilon and algebraic stress models. It is shown that the predictions of the new model are in better agreements with the experimental data.
引用
收藏
页码:516 / 524
页数:9
相关论文
共 23 条
[2]   MEASUREMENTS AND PREDICTION OF FULLY DEVELOPED TURBULENT-FLOW IN AN EQUILATERAL TRIANGULAR DUCT [J].
ALY, AMM ;
TRUPP, AC ;
GERRARD, AD .
JOURNAL OF FLUID MECHANICS, 1978, 85 (MAR) :57-83
[3]  
Bradshaw P., 1981, ENG CALCULATION METH, DOI Academic Press
[4]  
DALEY RJ, 1974, PHYS FLUIDS, V13, P2634
[5]  
Eaton J., 1980, THESIS STANFORD U
[6]   CONTRIBUTION TOWARDS A REYNOLDS-STRESS CLOSURE FOR LOW-REYNOLDS-NUMBER TURBULENCE [J].
HANJALIC, K ;
LAUNDER, BE .
JOURNAL OF FLUID MECHANICS, 1976, 74 (APR22) :593-610
[7]  
KIM J, 1978, MD37 STANF U DEP MEC
[8]  
LAUFER J, 1951, NACA1053 NAT ADV COM
[9]   PROGRESS IN DEVELOPMENT OF A REYNOLDS-STRESS TURBULENCE CLOSURE [J].
LAUNDER, BE ;
REECE, GJ ;
RODI, W .
JOURNAL OF FLUID MECHANICS, 1975, 68 (APR15) :537-566
[10]  
Launder BE, 1973, P I MECH ENG, V187, P455, DOI DOI 10.1243/PIME_PROC_1973_187_131_02