Coherent structures in wall turbulence and mechanism for drag reduction control

Chun Xiao Xu; Bing Qing Deng; Wei Xi Huang; Gui Xiang Cui

doi:10.1007/s11433-013-5087-4

Coherent structures in wall turbulence and mechanism for drag reduction control

Chun Xiao Xu, Bing Qing Deng, Wei Xi Huang, Gui Xiang Cui

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	1053-1061
Number of pages	9
Journal	Science China: Physics, Mechanics and Astronomy
Volume	56
Issue number	6
DOIs	https://doi.org/10.1007/s11433-013-5087-4
State	Published - Jun 2013
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 10925210 and 11132005).

Keywords

active control
coherent structure
drag reduction
wall turbulence

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access

10.1007/s11433-013-5087-4

OpenUrl availability

Full text

Cite this

@article{b13a05fbb2724df2ba414f63d32f8195,

title = "Coherent structures in wall turbulence and mechanism for drag reduction control",

abstract = "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.",

keywords = "active control, coherent structure, drag reduction, wall turbulence",

author = "Xu, {Chun Xiao} and Deng, {Bing Qing} and Huang, {Wei Xi} and Cui, {Gui Xiang}",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 10925210 and 11132005).",

year = "2013",

month = jun,

doi = "10.1007/s11433-013-5087-4",

language = "English (US)",

volume = "56",

pages = "1053--1061",

journal = "Science China: Physics, Mechanics and Astronomy",

issn = "1674-7348",

publisher = "Science in China Press",

number = "6",

}

TY - JOUR

T1 - Coherent structures in wall turbulence and mechanism for drag reduction control

AU - Xu, Chun Xiao

AU - Deng, Bing Qing

AU - Huang, Wei Xi

AU - Cui, Gui Xiang

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 10925210 and 11132005).

PY - 2013/6

Y1 - 2013/6

N2 - 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.

AB - 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.

KW - active control

KW - coherent structure

KW - drag reduction

KW - wall turbulence

UR - http://www.scopus.com/inward/record.url?scp=84878282077&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878282077&partnerID=8YFLogxK

U2 - 10.1007/s11433-013-5087-4

DO - 10.1007/s11433-013-5087-4

M3 - Article

AN - SCOPUS:84878282077

SN - 1674-7348

VL - 56

SP - 1053

EP - 1061

JO - Science China: Physics, Mechanics and Astronomy

JF - Science China: Physics, Mechanics and Astronomy

IS - 6

ER -

Coherent structures in wall turbulence and mechanism for drag reduction control

Abstract

Bibliographical note

Keywords

UN SDGs

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this