Structure detection and analysis of non-circular impinging jets in a semi-confined array configuration

被引：2

作者：

Dano, Bertrand P. E. ^{[1
]}

Liburdy, James A. ^{[1
]}

机构：

[1] Oregon State Univ, Dept Mech Engn, Corvallis, OR 97331 USA

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2007年 / 31卷 / 08期

关键词：

jet; array; impingement; POD; vortex detection;

D O I：

10.1016/j.expthermflusci.2006.10.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The flow structure generated by circular and oblate shaped nozzles for an impinging confined 7-by-7 jet array is investigated. Instantaneous velocity fields, obtained from Digital Particle Image Velocimetry (DPIV) along the crossflow direction are analyzed using Proper Orthogonal Decomposition (POD). Also, a vortex detection algorithm is used to locate and quantify the nature of the instantaneous vortices within the flow. The results show that an oblate shaped nozzle when oriented with its major axis aligned with the exhaust flow has flow characteristics resulting in increased turbulent kinetic energy. This has potential for increased surface transport. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：991 / 1003

页数：13

共 30 条

[1] Vortex organization in the outer region of the turbulent boundary layer [J].

Adrian, RJ ;

Meinhart, CD ;

Tomkins, CD .

JOURNAL OF FLUID MECHANICS, 2000, 422 :1-54

[2] Near surface characterization of an impinging elliptic jet array [J].

Arjocu, SC ;

Liburdy, JA .

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1999, 121 (02) :384-390

[3] Identification of dominant heat transfer modes associated with the impingement of an elliptical jet array [J].

Arjocu, SC ;

Liburdy, JA .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2000, 122 (02) :240-247

[4]

ARJOCU SC, 1997, P ASME HEAT TRANSF D, V3, P47

[5] Fountain flows produced by multiple impinging jets in a crossflow [J].

Barata, JMM .

AIAA JOURNAL, 1996, 34 (12) :2523-2530

[6]

BARATA JMM, 1992, J FLUID ENG-T ASME, V114, P231, DOI 10.1115/1.2910020

[7]

BENARD A, 1999, J FLUID ENG, V121, P808

[8]

Bjornsson H., 1997, 971 CCGCR

[9] Flow characteristics and heat transfer performances of a semiconfined impinging array of jets: effect of nozzle geometry [J].

Dano, BPE ;

Liburdy, JA ;

Kanokjaruvijit, K .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (3-4) :691-701

[10]

DICICCA GM, 2002, P ASME FEDSM 02 ASME

← 1 2 3 →