ON THE SPACE-TIME CHARACTERISTICS OF WALL-PRESSURE FLUCTUATIONS

被引：169

作者：

CHOI, H ^{[1
]}

MOIN, P ^{[1
]}

机构：

[1] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1990年 / 2卷 / 08期

关键词：

D O I：

10.1063/1.857593

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A database obtained by direct numerical simulation of turbulent channel flow was used to compute the three-dimensional frequency/wave-number spectrum of wall-pressure fluctuations. The spectrum was used to deduce scaling laws for pressure fluctuations and to evaluate the similarity form for the power spectrum. The convection velocity as a function of frequency, wave number, and spatial and temporal separations was calculated and compared with the experimental data. The problem of artificial "acoustics" in numerical simulation of incompressible flows is discussed. © 1990 American Institute of Physics.

引用

页码：1450 / 1460

页数：11

共 24 条

[1]

Bendat J.S., 1971, MEASUREMENT ANAL RAN

[2]

Blake W. K., 1970, Journal of Fluid Mechanics, V44, P637, DOI 10.1017/S0022112070002069

[3]

BLAKE WK, 1986, MECHANICS FLOW INDUC

[4] INACTIVE MOTION AND PRESSURE FLUCTUATIONS IN TURBULENT BOUNDARY LAYERS [J].