Ignition and Transient Combustion Study of Scramjet

• Main Authors: Wen Jay Liu, 劉文傑
• Other Authors: Jir-Ming Char
• Format: Others
• Language: en_US
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/65168733382412625267

博士 === 國立成功大學 === 航空太空工程學系 === 88 === Ignition and Transient Combustion Study of Scramjet Student : Wen-Jay Liu Advisor : Jir-Ming Char Co-Advisor : Huei-Huang Chiu ABSTRACT Evident technological , economical , and operational advantages exist when liquid hydrocarbon fuels , such as JP-8, RJ-5 are used in comparison with hydrogen-based system for the development of the small hypersonic vehicles. Throughout the continuing development of the scramjet concept, the mixing of fuel and air in the combustor has been one of many important and persistent problems. The length of the combustor must be limited to a few feet due to the impact that the size of the combustor can have on the overall performance of a highly integrated hypersonic flight vehicles. Therefore, the sufficient entraiment and subsquent micromixing followed by significant heat release must all occur in the short residence time of a fuel-air mixture, which is 4), wedges will shorten the ignition delay time to 50 % as compared with no wedges case. The mechanisms of the test section flowfield are pictured and analyzed. Furthermore, the difference between varied combustor configurations will be discussed in detail in this study.