|Table of Contents|

A theoretical prediction method of ignition distance in supersonic mixing layer(PDF)

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

Issue:
2015年01期
Page:
50-55
Research Field:
研究与设计
Publishing date:

Info

Title:
A theoretical prediction method of ignition distance in supersonic mixing layer
Author(s):
ZHANG Qian;  WANG Bing;  ZHANG Yun-long;  ZHANG Hui-qiang
School of Aerospace, Tsinghua University, Beijing 100084, China
Keywords:
supersonic plane mixing layer;  ignition distance;  theoretical prediction;  numerical simulation
PACS:
V0357.5-34
DOI:
-
Abstract:
A theoretical method is proposed for the prediction of the ignition distances in the supersonic mixing layer. Based on the inlet thermodynamics parameters and the correction temperature related to viscous heating and compressibility effect, a closed container reaction system is defined. The ignition delay time of the closed container reaction system are obtained through coupling the detailed chemical reaction mechanism. The ignition distance is got according to the mean flow velocity of the supersonic mixing layer. The ignition distances obtained by the theoretical prediction method agree well with those by CFD. The variation of the ignition distances with the related influence factors, which is observed in the previous studies, can be clearly explained in physics by the present theoretical prediction method. Besides, the theoretical prediction method for the ignition of ignition distance through coupling the limited experimental results with numerical simulation ones.

References:

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Last Update: 1900-01-01