Thrust chamber dynamics of multi-tube pulse detonation engines

Fuhua Ma, Yuhui Wu, Jeong Yeol Choi, Vigor Yang

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

This paper deals with the modeling and simulation of the thrust chamber dynamics of airbreathing pulse detonation engines (PDEs). The system under consideration includes a supersonic inlet, a rotary valve, a multi-tube combustor, and a common nozzle. The analysis treats the conservation equations of mass, momentum, energy, and species concentration in two dimensions. Chemical kinetics is modeled using a onestep global reaction scheme, which is calibrated with a detailed model for stoichiometric hydrogen/air system. The governing equations and their associated boundary conditions are numerically solved be means of a recently developed Space-Time Conservation Element/Solution Element method, which circumvents the deficiencies of existing numerical methods for treating detonation waves and shock discontinuities. The resultant computer code is further parallelized using the Message-Passing-Interface library to improve its efficiency. The combustion and gasdynamic processes in both single- and multi-tube PDEs are studied in detail. The effects of operation frequency, valve close-up time, and system geometry on the engine propulsive performance are examined. Results show that the multi-tube design substantially modifies the system dynamics and reduces the degree of the unsteadiness of the engine. It, however, only slightly improves the propulsive performance for the system considered herein.

原文English
主出版物標題41st Aerospace Sciences Meeting and Exhibit
發行者American Institute of Aeronautics and Astronautics Inc.
ISBN(列印)9781624100994
DOIs
出版狀態Published - 2003
事件41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States
持續時間: 2003 1月 62003 1月 9

出版系列

名字41st Aerospace Sciences Meeting and Exhibit

Other

Other41st Aerospace Sciences Meeting and Exhibit 2003
國家/地區United States
城市Reno, NV
期間03-01-0603-01-09

All Science Journal Classification (ASJC) codes

  • 空間與行星科學
  • 航空工程

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