TURBULENCE STRUCTURE FOR PLANE POISEUILLE-COUETTE FLOW AND IMPLICATIONS FOR DRAG REDUCTION OVER SURFACES WITH SLIP

被引：12

作者：

Spencer, Nicholas B. ^{[1
]}

Lee, Lloyd L. ^{[2
]}

Parthasarathy, Ramkumar N. ^{[3
]}

Papavassiliou, Dimitrios V. ^{[1
,4
]}

机构：

[1] Univ Oklahoma, Sch Chem Biol & Mat Engn, Norman, OK 73019 USA

[2] Calif State Univ, Pomona, CA USA

[3] Univ Oklahoma, Sch Aerosp & Mech Engn, Norman, OK 73019 USA

[4] Univ Oklahoma, Sarkeys Energy Ctr, Norman, OK 73019 USA

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2009年 / 87卷 / 01期

关键词：

direct numerical simulation; turbulence; drag reduction; velocity slip; LOW-REYNOLDS-NUMBER; CHANNEL FLOW; HEAT-TRANSFER; VELOCITY; SIMULATION; LIQUID; WALL;

D O I：

10.1002/cjce.20136

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Direct numerical simulations were used to simulate plane channel and plane Poiseuille-Couette flows. For Poiseuille-Couette flow, the walls of the channel were moving with a specified velocity. This is equivalent to forcing a slip velocity at the wall of the channel, and such flow behaviour can be viewed as the effect due to an ultra-hydrophobic wall. It was found that the location of the zero Reynolds stress value shifted towards the wall moving in the streamwise direction. The near-wall eddies were found to be longer and weaker than for the plane-Poiseuille channel flow. It appears that such an eddy structure can lead to turbulence drag reduction.

引用

页码：38 / 46

页数：9

共 17 条

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