A numerical study of three-dimensional wall-bounded flows

被引：39

作者：

Coleman, GN

Kim, J

Le, AT

机构：

[1] Mech. and Aerosp. Eng. Department, Univ. of California, Los Angeles, Los Angeles, CA

[2] Mech. and Aerosp. Eng. Department, Univ. of California, Los Angeles, Box 951597, Los Angeles, CA 90095-1597

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 1996年 / 17卷 / 03期

关键词：

turbulence; direct numerical simulation; channel flow; three-dimensional boundary layers;

D O I：

10.1016/0142-727X(96)00042-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Nonequilibrium three-dimensional (3-D) turbulent boundary layers are studied using direct numerical simulation (DNS). Time-developing flows are used to investigate the physics of spatial-developing ones. We find that application of a spanwise shear leads to the reduction of both the turbulent kinetic energy and drag, with the most dramatic reduction of the latter occurring when the shear is applied between y(+) approximate to 5 and 15. When the three-dimensionality is produced by transverse skewing, the resulting alteration of the relationship between the Reynolds stresses is associated in large part with the effect of the pressure gradient upon the amplification or attenuation of the turbulent kinetic energy.

引用

页码：333 / 342

页数：10

共 14 条

[1]

[Anonymous], 1981, 81315 NASA TM

[2] TURBULENT SECONDARY FLOWS [J].