A study of the flow field of a confined and submerged impinging jet

被引：128

作者：

Fitzgerald, JA ^{[1
]}

Garimella, SV ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53201 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1998年 / 41卷 / 8-9期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0017-9310(97)00205-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The flow field of an axisymmetric, confined and submerged turbulent jet impinging normally on a flat plate was studied experimentally using laser-Doppler velocimetry. Single jets of a perfluorinated dielectric liquid (FC-77) issuing from square-edged, geometrically similar nozzles were used in the experiments with the radial outflow confined between parallel plates. The nozzle (length to diameter) aspect ratio was unity, giving rise to a still-developing velocity profile at the nozzle exit. Experiments were conducted with nozzle diameters of 3.18 and 6.35 mm, nozzle-to-target plate spacings of up to four jet diameters, and Reynolds numbers in the range of 8500-23,000. The toroidal recirculation pattern in the outflow region characteristic of confined jets is mapped. Velocities and turbulence levels are presented over a fine measurement grid in the pre-impingement and wall-jet regions. (C) 1997 Elsevier Science Ltd.

引用

页码：1025 / 1034

页数：10

共 17 条

[1]

ASHFORTHFROST S, 1996, INT COMMUN HEAT MASS, V23, P152

[2]

DENOUDEN C, 1974, 5TH P INT HEAT TRANS, V5, P293

[3] Flow field effects on heat transfer in confined jet impingement [J].

Fitzgerald, JA ;

Garimella, SV .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1997, 119 (03) :630-632

[4]

Gardon R., 1965, INT J HEAT MASS TRAN, V8, P1261, DOI DOI 10.1016/0017-9310(65)90054-2

[5] Nozzle-geometry effects in liquid jet impingement heat transfer [J].

Garimella, SV ;

Nenaydykh, B .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1996, 39 (14) :2915-2923

[6] Confined and submerged liquid jet impingement heat transfer [J].

Garimella, SV ;

Rice, RA .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1995, 117 (04) :871-877

[7]

GILLESPIE DRH, 1996, INT GAS TURB AER C E

[8] EFFECT OF TURBULENCE ON HEAT-TRANSFER AT A STAGNATION POINT [J].

HOOGENDOORN, CJ .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1977, 20 (12) :1333-1338

[9]

HRYCAK P, 1970, D5690 NASA TN, P1

[10] AIR-JET IMPINGEMENT HEAT-TRANSFER AT LOW NOZZLE PLATE SPACINGS [J].

LYTLE, D ;

WEBB, BW .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1994, 37 (12) :1687-1697

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