Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Numerical Requirements for the Simulation of Detonation Cell Structures

데토네이션 셀 구조 모사를 위한 수치적 요구 조건

  • 최정열 (부산대학교 항공우주공학과) ;
  • 조덕래 (부산대학교 대학원 항공우주공학과)
  • Published : 2006.06.01
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Abstract

Present study examines the numerical issues of cell structure simulation for various regimes of detonation phenomena ranging from weakly unstable to highly unstable detonations. Inviscid fluid dynamics equations with $variable-{\gamma} $ formulation and one-step Arrhenius reaction model are solved by a MUSCL-type TVD scheme and 4th order accurate Runge-Kutta time integration scheme. A series of numerical studies are carried out for the different regimes of the detonation phenomena to investigate the computational requirements for the simulation of the detonation wave cell structure by varying the reaction constants and grid resolutions. The computational results are investigated by comparing the solution of steady ZND structure to draw out the minimum grid resolutions and the size of the computational domain for the capturing cell structures of the different regimes of the detonation phenomena.

본 논문은 약한 불안정 데토네이션 영역부터 강한 불안정 데토네이션 영역까지 여러 영역에 걸친 데토네이션 파 셀 구조 모사에 대한 수치적 문제점들을 살펴보았다. 비열 비 값이 변하는 점성 유체 역학 방정식 및 1단계 Arrhenius 반응 모델 해석을 위하여 MUSCL-type TVD 기법을 이용한 공간 차분과 4차 정확도의 Runge-Kutta 시간 적분을 이용하였다. 일련의 수치해석 연구는 여러 반응 상수 및 격자 해상도에 따른 데토네이션 셀 구조를 해석하기 위하여 요구되는 계산 조건을 구하기 위하여 다양한 데토네이션 현상 영역에서 수행되었다. 다른 영역의 데토네이션 현상에서 셀 구조를 포착하기 위한 계산 영역의 크기와 최소 격자 해상도를 찾아내기 위하여 정상 1차원 ZND 해석 결과와 전산 해석 결과를 비교 검토하였다.

Keywords

References

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