Heat transfer in turbulent separated flow behind a rib on the surface of square channel at different orientation angles relative to flow direction

被引：25

作者：

Smulsky, Ya. I. ^{[1
]}

Terekhov, V. I. ^{[1
]}

Yarygina, N. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Thermophys, Siberian Branch, Novosibirsk 630090, Russia

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2012年 / 55卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Rib; Orientation angle; Turbulent separated flows; Enhancement; Heat transfer; Pressure distribution; RECTANGULAR CHANNELS; DUCTS; TURBULATORS; PARALLEL; RATIO;

D O I：

10.1016/j.ijheatmasstransfer.2011.10.037

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental results on turbulent streamlining of a flat rib on a flat surface at a change in the rib orientation angle relative to the flow are presented in this paper. Experiments were carried out for angles phi varying from 50 degrees to 90 degrees and three values of rib height. Data on visualization were used for determination of the pattern of vortex formation and coordinates of reattachment line. Deformation of the recirculation region and obvious 3D character of the flow behind the rib with a decrease in angle phi considered. The pressure coefficients were measured in different longitudinal cross-sections of the channel behind the rib with varying orientation angle phi. The temperature fields on the surface behind the rib were determined by means of the thermography method and with the help of thermocouples. The effect of the angle of flow angularity and rib height on dynamic and thermal characteristics of the separated flow was analyzed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：726 / 733

页数：8

共 24 条

[1]

Chyu MK, 1989, EXP HEAT TRANSFER, V2, P291

[2] Vortex formation and heat transfer in turbulent flow past a transverse cavity with inclined frontal and rear walls [J].

D'yachenko, A. Yu. ;

Terekhov, V. I. ;

Yarygina, N. I. .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2008, 51 (13-14) :3275-3286

[3] Heat transfer and pressure drop measurements in rib-roughened rectangular ducts [J].

Gao, XF ;

Sundén, B .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2001, 24 (1-2) :25-34

[4] DEVELOPING HEAT-TRANSFER IN RECTANGULAR CHANNELS WITH RIB TURBULATORS [J].

HAN, JC ;

PARK, JS .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1988, 31 (01) :183-195

[5] HIGH-PERFORMANCE HEAT-TRANSFER DUCTS WITH PARALLEL BROKEN AND V-SHAPED BROKEN RIBS [J].

HAN, JC ;

ZHANG, YM .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1992, 35 (02) :513-523

[6] AUGMENTED HEAT-TRANSFER IN SQUARE CHANNELS WITH PARALLEL, CROSSED, AND V-SHAPED ANGLED RIBS [J].

HAN, JC ;

ZHANG, YM ;

LEE, CP .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1991, 113 (03) :590-596

[7]

HANCO PE, 1999, J EXP THERMAL FLUID, V14, P25

[8] Measurements of mean and fluctuating wall shear stress beneath spanwise-invariant separation bubbles [J].

Hancock, PE .

EXPERIMENTS IN FLUIDS, 1999, 27 (01) :53-59

[9] The Effects of duct height on heat transfer enhancement of a co-rotating type rectangular finned surface in duct [J].

Islam, M. D. ;

Oyakawa, K. ;

Yaga, M. ;

Kubo, I. .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2009, 33 (02) :348-356

[10] The importance of rib shape effects on the local heat transfer and flow friction characteristics of square ducts with ribbed internal surfaces [J].

Kamali, R. ;

Binesh, A. R. .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2008, 35 (08) :1032-1040

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