|Table of Contents|

Mixing enhancement law of shock wave interfering struct jet (PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年03期
Page:
34-47
Research Field:
目次
Publishing date:

Info

Title:
Mixing enhancement law of shock wave interfering struct jet
Author(s):
YANG Jianing1; 2;  SHEN Chibing2;  DU Zhaobo2
(1. Institute for Quantum Information & State Key Laboratory of High Performance Computing, College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China; 2.Science and Technology on Scramjet Laboratory, College ofAerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
Keywords:
scramjet;  struct jet;  ramp shock generator;  structural parameters;  mixing effect
PACS:
V231
DOI:
-
Abstract:
Realizing the rapid mixing of supersonic incoming flow and fuel jet in the combustion chamber is one of the key problems to be solved for improving the performance of scramjet. In order to effectively improve the mixing effect of air inflow and fuel jet in the combustion chamber, a ramp shock generator was added to the upper wall of the combustion chamber through numerical simulation on the premise of supersonic inflow and strut injection, and the structural parameters of the ramp shock generator are changed, including angles(15°, 20°, 25°, 30°),dimensions(5, 10, 15, 20 mm)and location(100, 110, 120, 130 mm)to explore the influence of different structural parameters on the mixing effect. The results show that the introduction of the ramp shock generator can effectively enhance the mixing effect, and different structural parameters have different effects on the mixing effect. The size of the ramp shock generator has more influence on the mixing effect than the angle, and the angle of the ramp shock generator has more influence on the mixing effect than the position. At the same time, the mixing efficiency and the total pressure recovery coefficient are negatively correlated.

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Last Update: 1900-01-01