Effect of the Contour Shock on Restricted Shock Separation in Rocket Nozzles

2018 ◽  
Vol 34 (2) ◽  
pp. 557-561
Author(s):  
K. Schomberg ◽  
J. Olsen ◽  
A. Neely ◽  
G. Doig
Keyword(s):  
Restricted Shock Separation

A Suppression Method of Restricted Shock Separation in Overexpanded Rocket Nozzle

2006 ◽  
Author(s):  
Koichi Yonezawa ◽  
Yasuhide Watanabe ◽  
Tsuyoshi Morimoto ◽  
Yoshinobu Tsujimoto ◽  
Kazuhiko Yokota
Keyword(s):  
Rocket Nozzle ◽  
Restricted Shock Separation ◽  
Suppression Method

Appearance of Restricted Shock Separation in Rocket Nozzles

2002 ◽  
Vol 18 (3) ◽  
pp. 577-584 ◽  
Author(s):  
G. Hagemann ◽  
M. Frey ◽  
W. Koschel
Keyword(s):  
Restricted Shock Separation

scholarly journals Suppressing Restricted Shock Separation in a Subscale Rocket Nozzle Using Contour Geometry

2016 ◽  
Vol 32 (5) ◽  
pp. 1298-1301 ◽  
Author(s):  
K. Schomberg ◽  
J. Olsen ◽  
A. Neely ◽  
G. Doig
Keyword(s):  
Rocket Nozzle ◽  
Restricted Shock Separation

Wall pressure unsteadiness in an over-expanded single expansion ramp nozzle

2020 ◽  
Vol 34 (14n16) ◽  
pp. 2040102
Author(s):  
Chengjun He ◽  
Jianqiang Li ◽  
Zhaolin Fan ◽  
Yaohua Li ◽  
Jingmin Liang ◽  
...  
Keyword(s):  
Separation Bubble ◽  
Dynamic Pressure ◽  
Ambient Pressure ◽  
Pressure Ratio ◽  
Wall Pressure ◽  
Separation Flow ◽  
Lower Wall ◽  
Restricted Shock Separation ◽  
Dynamic Pressure Measurement ◽  
Schlieren Techniques

To evaluate the unsteady nature of wall pressure in an over-expanded single expansion ramp nozzle, under fixed nozzle pressure ratio (NPR) of 5.92, 6.55 and 7.19, an experimental investigation has been conducted based on focusing Schlieren techniques and dynamic pressure measurement. For all cases, the results show fully formed restricted shock separation (RSS) on the upper wall, which experiences flow reattachment on the wall downstream of separation resulting in the formation of a separation bubble. The separation mode is also RSS on the lower wall at [Formula: see text]. However, the lower wall pressure is randomly larger or lower than ambient pressure near the nozzle exit at [Formula: see text], the separated shear-layer can intermittently impinge on the lower wall, and the separation mode is partially restricted shock separation (pRSS). At [Formula: see text], the separation flow does not reattach downstream of the lower wall. That is, it occurs free shock separation (FSS).

Numerical Study of Restricted Shock Separation in a Compressed Truncated Perfect Nozzle

AIAA Journal ◽  
2006 ◽  
Vol 44 (3) ◽  
pp. 576-584 ◽  
Author(s):  
Taro Shimizu ◽  
Hiroshi Miyajima ◽  
Masatoshi Kodera
Keyword(s):  
Numerical Study ◽  
Restricted Shock Separation

Restricted Shock Separation in Rocket Nozzles

2000 ◽  
Vol 16 (3) ◽  
pp. 478-484 ◽  
Author(s):  
Manuel Frey ◽  
Gerald Hagemann
Keyword(s):  
Restricted Shock Separation
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