LES investigation of a Passively Excited Impinging Jet

被引：4

作者：

Uddin, Naseem ^{[1
]}

Neumann, Sven Olaf ^{[2
]}

Weigand, Bernhard ^{[3
]}

Younis, Bassam A. ^{[4
]}

机构：

[1] Univ Teknol Brunei, Jalan Tungku Link, BE-1410 Gadong, Brunei

[2] Fachhsch Kiel, Grenzstr 3, D-24149 Kiel, Germany

[3] Univ Stuttgart, Inst Thermodynam Luft & Raumfahrt, Pfaffenwaldring 31, D-70569 Stuttgart, Germany

[4] Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2021年 / 165卷

关键词：

Periodic flow; passive excitation; jet impingement; Large Eddy Simulations; Heat Transfer; HEAT-TRANSFER; TURBULENCE STATISTICS; AXISYMMETRICAL JET; STAGNATION REGION; FLOW; IMPINGEMENT; SIMULATIONS; FIELD; GAS;

D O I：

10.1016/j.ijheatmasstransfer.2020.120705

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Periodic vortex shedding which forms when fluid moves over a circular cylinder creates a wake which causes fluctuating unsteady forces on structures. The oscillating wake may also serve to enhance heat transfer rates from a surface on which it impinges. In this paper we investigate the passive excitation of the impinging jet's velocity field using a cylindrical insert. The insert is placed just before where the jet issues from the circular pipe. The flow is examined using Large Eddy Simulations (LES). The jet's Reynolds number based on bulk inlet velocity is 23,000 and jet's outlet-to-target wall distance is two. It is found that using a cylindrical insert in the impingement pipe results in enhanced heat transfer rates for cooling applications. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：15

共 46 条

[1]

[Anonymous], 2005, FASTEST USER MANUAL

[2] Heat transfer from a flat plate to a turbulent axisymmetric impinging jet [J].

AshforthFrost, S ;

Jambunathan, K ;

Whitney, CF ;

Ball, SJ .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 1997, 211 (02) :167-172

[3] Heat Transfer Measurements From a Surface With Uniform Heat Flux and an Impinging Jet [J].

Baughn, J. W. ;

Shimizu, S. .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1989, 111 (1-4) :1096-1098

[4] AN EXPERIMENTAL-STUDY OF ENTRAINMENT EFFECTS ON THE HEAT-TRANSFER FROM A FLAT SURFACE TO A HEATED CIRCULAR IMPINGING JET [J].

BAUGHN, JW ;

HECHANOVA, AE ;

YAN, XJ .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1991, 113 (04) :1023-1025

[5] A note on unsteady impinging jet heat transfer [J].

Bhattacharya, S. ;

Ahmed, A. .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2010, 34 (05) :633-637

[6] Numerically nonreflecting boundary and interface conditions for compressible flow and aeroacoustic computations [J].

Colonius, T .

AIAA JOURNAL, 1997, 35 (07) :1126-1133

[7] IMPINGING JET STUDIES FOR TURBULENCE MODEL ASSESSMENT .1. FLOW-FIELD EXPERIMENTS [J].

COOPER, D ;

JACKSON, DC ;

LAUNDER, BE ;

LIAO, GX .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1993, 36 (10) :2675-2684

[8] STRATOCUMULUS-CAPPED MIXED LAYERS DERIVED FROM A 3-DIMENSIONAL MODEL [J].

DEARDORFF, JW .

BOUNDARY-LAYER METEOROLOGY, 1980, 18 (04) :495-527

[9]

Deardorff JW., 1973, Workshop on Mircometeorology, P271

[10]

FENOT M, 2004, ETUDE REFROIDISSEMEN

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