Coherent structures in wall turbulence and mechanism for drag reduction control

被引：0

作者：

XU ChunXiao ^{[1
]}

DENG BingQing ^{[1
]}

HUANG WeiXi ^{[1
]}

CUI GuiXiang ^{[1
]}

机构：

[1] Department of Engineering Mechanics,Tsinghua University

来源：

Science China(Physics,Mechanics & Astronomy) | 2013年 / 06期

基金：

中国国家自然科学基金;

关键词：

wall turbulence; coherent structure; drag reduction; active control;

D O I：

暂无

中图分类号：

O357.5 [湍流（紊流）];

学科分类号：

080103 ; 080704 ;

摘要：

Herein is introduced the mechanism for active control influencing the generation of the near-wall streamwise vortices,which are closely related to the production of high skin friction in wall-bounded turbulent flows.A new opposition control scheme with adjusting control amplitude is proposed and evaluated in turbulent channel flow by direct numerical simulations.The maximum drag reduction rate can be greatly enhanced by the strengthened control.Finally the effectiveness of the control to the coherent structures at high Reynolds numbers is investigated by using a linear transient growth model.

引用

页码：1053 / 1061

页数：9

共 50 条

[41] Application of neural networks to turbulence control for drag reduction
Lee, C
Kim, J
Babcock, D
Goodman, R
PHYSICS OF FLUIDS, 1997, 9 (06) : 1740 - 1747
[42] Application of the Goore Scheme to turbulence control for drag reduction (II)Application to turbulence control
Changboon Lee
John Kim
KSME International Journal, 2001, 15 : 1580 - 1587
[43] Application of the Goore Scheme to turbulence control for drag reduction (II) - Application to turbulence control
Lee, C
Kim, J
KSME INTERNATIONAL JOURNAL, 2001, 15 (11): : 1580 - 1587
[44] On the friction drag reduction mechanism of streamwise wall fluctuations
Jozsa, Tamas Istvan
Balaras, Elias
Kashtalyan, Maria
Borthwick, Alistair George Liam
Viola, Ignazio Maria
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2020, 86
[45] Role of small scale coherent structures in turbulent drag reduction
Van Dam, P.H.J.
Wegdam, G.H.
Applied Scientific Research (The Hague), 1993, 51 (1-2): : 155 - 159
[46] DYNAMICS OF BOUNDARY-LAYER TURBULENCE AND MECHANISM OF DRAG REDUCTION
LANDAHL, MT
PHYSICS OF FLUIDS, 1977, 20 (10) : S55 - S63
[47] Drag reduction in wall-bounded turbulence by synthetic jet sheets
Xie, Feng
Perez-Munoz, Jose D.
Qin, Ning
Ricco, Pierre
JOURNAL OF FLUID MECHANICS, 2022, 941
[48] Colloquium: Theory of drag reduction by polymers in wall-bounded turbulence
Procaccia, Itamar
L'vov, Victor S.
Benzi, Roberto
REVIEWS OF MODERN PHYSICS, 2008, 80 (01) : 225 - 247
[49] Wall-based identification of coherent structures in wall-bounded turbulence
Sanmiguel Vila, C.
Flores, O.
THIRD MADRID SUMMER SCHOOL ON TURBULENCE, 2018, 1001
[50] Experimental investigation on wall-bounded turbulence drag reduction by double piezoelectric vibrator active control
Bai, Jian-xia
Huang, Yong-xiang
Jiang, Nan
Ma, Xing-yu
Tang, Zhan-qi
JOURNAL OF HYDRODYNAMICS, 2020, 32 (04) : 747 - 757

← 1 2 3 4 5 →