Simulation of the effects of dilution gas for the formation of CJ plane during the oblique detonation
學年 112
學期 2
出版（發表）日期 2024-03-01
作品名稱 Simulation of the effects of dilution gas for the formation of CJ plane during the oblique detonation
作品名稱（其他語言）
著者 Niu, Yang-yao
單位
出版者
著錄名稱、卷期、頁數 Numerical Heat Transfer Part A: Applications,　Volume 85, 2024 - Issue 5
摘要 This study aims to properly simulate transition patterns (the initiation structure between oblique shock wave and oblique detonation wave) to better understand the performance of oblique detonation wave engines under practical operating conditions. The former two cases are observed in a stoichiometric hydrogen-air mixture, the oblique detonation originates from the impact shock region where the pre-combustion hot gas near the wall interacts with the oblique shocks. In the second case, different proportions of dilution gas are tested. It is noted that a thermal choking condition due to strong compression waves during a sufficient duration results in the turning transverse waves and the inhomogeneous Chapman–Jouguet (CJ) plane. Therefore, the deformed CJ plane, the nonuniform combustion structures, and the overheated oblique detonation wave (ODW) with the excessive pressure rise are shown. Finally, it is concluded that the chemical equilibrium shift and the stability of ODW in the combustor are significantly affected by the expanding flow of dilution gases.
關鍵字 CFD;CJ plane;Euler equations;hydrogen combustion;oblique detonation
語言 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Niu, Yang-yao
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124295 )

SDGS 良好健康和福祉,優質教育,尊嚴就業與經濟發展,產業創新與基礎設施