Direct numerical simulation of wall turbulent flows with microbubbles

被引：5
作者：
Kanai, A [1 ]
Miyata, H [1 ]
机构：
[1] Univ Tokyo, Fac Engn, Dept Environm & Ocean Engn, Bunkyo Ku, Tokyo 113, Japan
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2001年 / 35卷 / 05期
关键词：
DNS; finite difference method; marker-density-function method; Navier-Stokes equations; turbulent flows; two-phase flows;
D O I：
10.1002/1097-0363(20010315)35:5<593::AID-FLD105>3.0.CO;2-U
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The marker-density-function (MDF) method has been developed to conduct direct numerical simulation (DNS) for bubbly flows. The method is applied to turbulent bubbly channel flows to elucidate the interaction between bubbles and wall turbulence. The simulation is designed to clarify the structure of the turbulent boundary layer containing microbubbles and the mechanism of frictional drag reduction. It is deduced from the numerical tests that the interaction between bubbles and wall turbulence depends on the Weber and Froude numbers. The reduction of the frictional resistance on the wall is attained and its mechanism is explained from the modulation of the three-dimensional structure of the turbulent flow. Copyright (C) 2001 John Wiley & Sons, Ltd.
引用
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页码：593 / 615
页数：27
相关论文
共 23 条
[1]  
BOGDEVITCH VG, 1977, 2 INT C DRAG RED C D, V2, P25
[2]  
BUNNER B, 1997, ASME FEDSM 97
[3]  
Chan R. K.-C., 1970, Journal of Computational Physics, V6, P68, DOI 10.1016/0021-9991(70)90005-7
[4]  
GUIN MM, 1996, THESIS U TOKYO
[5]   REGENERATION MECHANISMS OF NEAR-WALL TURBULENCE STRUCTURES [J].
HAMILTON, JM ;
KIM, J ;
WALEFFE, F .
JOURNAL OF FLUID MECHANICS, 1995, 287 :317-348
[6]   THE MINIMAL FLOW UNIT IN NEAR-WALL TURBULENCE [J].
JIMENEZ, J ;
MOIN, P .
JOURNAL OF FLUID MECHANICS, 1991, 225 :213-240
[7]  
KANAI A, 1996, 21 S NAV HYDR TUESD, P212
[8]  
KANAI A, 1999, J SOC NAVAL ARCHITEC, V185, P21
[9]  
KANAI A, 1994, J SOC NAVAL ARCHITEC, V177, P147
[10]  
KANAI A, 1998, 3 INT C MULT FLOW IC, P238
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