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http://dx.doi.org/10.3795/KSME-B.2006.30.11.1093

A Numerical Study on Combustion-Stability Rating of Impinging-Jet Injector Using Air-Injection Technique  

Sohn, Chae-Hoon (조선대학교 항공우주공학과)
Park, I-Sun (조선대학교 대학원 항공우주공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.11, 2006 , pp. 1093-1100 More about this Journal
Abstract
Combustion stability rating of jet injector is conducted numerically using air-injection technique in a model chamber, where air is supplied to oxidizer and fuel manifolds of the model five-element injector head. A sample F(fuel)-O(oxidizer)-O-F impinging-jet injector is adopted. In this technique, we can simulate mixing process of streams flowing through oxidizer and fuel orifices under cold-flow condition without chemical reaction. The model chamber was designed based on the methodologies proposed in the previous work regarding geometrical dimensions and operating conditions. From numerical data, unstable regions can be identified and they are compared with those from air-injection acoustic and hot-fire tests. The present stability boundaries are in a good agreement with experimental results. The proposed numerical method can be applied cost-effectively to stability rating of jet injectors when mixing of fuel and oxidizer jets is the dominant process in instability triggering.
Keywords
Stability Rating; Impinging-Jet Injector; Air-Injection;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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