The initial flow structures and oscillations of an underexpanded impinging jet

被引：13

作者：

Cui, Wei ^{[1
]}

Xu, Jinglei ^{[1
]}

Wang, Bing-Chen ^{[2
]}

Zhang, Pu ^{[1
]}

Qin, Qihao ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing 210016, Peoples R China

[2] Univ Manitoba, Dept Mech Engn, Winnipeg, MB R3T 5V6, Canada

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2021年 / 115卷

关键词：

Large-eddy simulation; Impinging jet; Feedback loop; Oscillation; LARGE-EDDY SIMULATION; ACOUSTIC PHENOMENA; SUPERSONIC JETS; IMPINGEMENT; SEMIDISCRETE; COMPUTATION; MECHANISMS; GENERATION; SCHEMES; WAVES;

D O I：

10.1016/j.ast.2021.106740

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A numerical investigation into an underexpanded round jet impinging vertically onto a flat plate is conducted using large-eddy simulation (LES). The impinging jet features a Mach number of 1.0 at the nozzle exit, a nozzle-pressure ratio of 4.03 and a nozzle-to-plate spacing of 2.08. Three levels of mesh refinement, two temporal discretization schemes and two subgrid-scale (SGS) models are compared. The mean velocity profiles and the dominant impinging tone frequency of the current simulation match the experimental data and the LES results available in the literature. The initial flow structures of the impinging jet are presented to investigate the formation of the flow field and the establishment of the feedback loop. The main processes of the feedback loop are investigated in detail. The oscillations of the Mach disk and the evolutions of the annular shocks and vortex structures are studied. It is observed that the periods of these evolvement processes are identical to that of the acoustic wave generations. (C) 2021 Elsevier Masson SAS. All rights reserved.

引用

页数：16

共 56 条

[1] Effect of Nozzle-Plate Distance on Acoustic Phenomena from Supersonic Impinging Jet [J].

Akamine, Masahito ;

Okamoto, Koji ;

Gee, Kent L. ;

Neilsen, Tracianne B. ;

Teramoto, Susumu ;

Okunuki, Takeo ;

Tsutsumi, Seiji .

AIAA JOURNAL, 2018, 56 (05) :1943-1952

[2] Acoustic Phenomena from Correctly Expanded Supersonic Jet Impinging on Inclined Plate [J].

Akamine, Masahito ;

Nakanishi, Yuta ;

Okamoto, Koji ;

Teramoto, Susumu ;

Okunuki, Takeo ;

Tsutsumi, Seiji .

AIAA JOURNAL, 2015, 53 (07) :2061-2067

[3] Experimental study of physical mechanisms in the control of supersonic impinging jets using microjets [J].

Alvi, Farrukh S. ;

Lou, Huadong ;

Shih, Chiang ;

Kumar, Rajan .

JOURNAL OF FLUID MECHANICS, 2008, 613 :55-83

[4] Experimental and computational investigation of supersonic impinging jets [J].

Alvi, FS ;

Ladd, JA ;

Bower, WW .

AIAA JOURNAL, 2002, 40 (04) :599-609

[5]

[Anonymous], 2013, LARGE EDDY SIMULATIO

[6] Feedback loop and upwind-propagating waves in ideally expanded supersonic impinging round jets [J].

Bogey, Christophe ;

Gojon, Romain .

JOURNAL OF FLUID MECHANICS, 2017, 823 :562-591

[7] Noise generation mechanisms for a supersonic jet impinging on an inclined plate [J].

Brehm, Christoph ;

Housman, Jeffrey A. ;

Kiris, Cetin C. .

JOURNAL OF FLUID MECHANICS, 2016, 797 :802-850

[8] NEAR WALL JET OF A NORMALLY IMPINGING, UNIFORM, AXISYMMETRIC, SUPERSONIC JET [J].

CARLING, JC ;

HUNT, BL .

JOURNAL OF FLUID MECHANICS, 1974, 66 (OCT21) :159-&

[9] A practical method for numerical evaluation of solutions of partial differential equations of the heat-conduction type [J].

Crank, J ;

Nicolson, P .

ADVANCES IN COMPUTATIONAL MATHEMATICS, 1996, 6 (3-4) :207-226

[10] Large Eddy Simulation of Supersonic Impinging Jets [J].

Dauptain, A. ;

Gicquel, L. Y. M. ;

Moreau, S. .

AIAA JOURNAL, 2012, 50 (07) :1560-1574

← 1 2 3 4 5 6 →