Visualization of stagnation point inside the closed wake of a 20%-truncated plug nozzle at starting process

被引：2

作者：

Mizukaki, Toshiharu ^{[1
]}

Watabe, Shyunsuke ^{[2
]}

机构：

[1] Tokai Univ, Dept Aeronaut & Astronaut, Hiratsuka, Kanagawa 25912, Japan

[2] IHI Aeroapace Co Ltd, Tomioka, Gunma, Japan

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2016年 / 50卷

关键词：

Plug nozzle; Background-oriented schlieren; Starting process; Shock tube; BACKGROUND-ORIENTED SCHLIEREN; PERFORMANCE; FLOWFIELD;

D O I：

10.1016/j.ast.2015.12.013

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Flow visualization using the background-oriented schlieren (BOS) technique was used to investigate the characteristics of the stagnation point shift near the nozzle base of a 20%-truncated planar plug nozzle designed for a Mach number of 2.87 at the nozzle exit. The nozzle pressure ratios ranged from 7 to 120. A shock tube with a cross-section of 3 x 4 cm is used as a high-pressure gas reservoir. The obtained images were compared with the Navier Stokes numerical solution obtained with the weighted averaged flux method. First, to confirm the establishment of steady flow, the starting process inside the nozzle was visualized using shadowgraph. Next, BOS images were used to determine the location of the stagnation point inside the closed wake. The images revealed that the distance of the stagnation point from the base surface was 1.3 times the throat width after the closed wake mode was established. (C) 2015 Elsevier Masson SAS. All rights reserved.

引用

页码：25 / 30

页数：6

共 12 条

[1]

Gross K.W., 1972, RES ACHIEVEMENTS REV, P87

[2] Computations of axisymmetric plug-nozzle flowfields: Flow structures and thrust performance [J].

Ito, T ;

Fujii, K ;

Hayashi, AK .

JOURNAL OF PROPULSION AND POWER, 2002, 18 (02) :254-260

[3]

Ito T., 2001, AIAA PAPER

[4]

Ito T., 2002, AIAA PAPER

[5]

Lee C., 1969, X53019 NASA TM

[6] Computerized background-oriented schlieren [J].

Meier, GEA .

EXPERIMENTS IN FLUIDS, 2002, 33 (01) :181-187

[7] On the applicability of background oriented optical tomography for large scale aerodynamic investigations [J].

Raffel, M ;

Richard, H ;

Meier, GEA .

EXPERIMENTS IN FLUIDS, 2000, 28 (05) :477-481

[8] Principle and applications of the background oriented schlieren (BOS) method [J].

Richard, H ;

Raffel, M .

MEASUREMENT SCIENCE AND TECHNOLOGY, 2001, 12 (09) :1576-1585

[9] Plug nozzle flowfield analysis [J].

Rommel, T ;

Hagemann, G ;

Schley, CA ;

Krulle, G ;

Manski, D .

JOURNAL OF PROPULSION AND POWER, 1997, 13 (05) :629-634

[10] ANNULAR TRUNCATED PLUG NOZZLE FLOWFIELD AND BASE PRESSURE CHARACTERISTICS [J].

SULE, WP ;

MUELLER, TJ .

JOURNAL OF SPACECRAFT AND ROCKETS, 1973, 10 (11) :689-695

← 1 2 →