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논문 기본 정보

자료유형
학술대회자료
저자정보
MA Yongliang (Dalian University of Technology) LI Tao (Dalian University of Technology) WU Chui-Jie (Dalian University of Technology)
저널정보
한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 2014년도 국제학술대회 논문집
발행연도
2014.10
수록면
212 - 217 (6page)

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초록· 키워드

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In this paper, we propose a robust computational method for the coupled simulations that contain fluid-structure interaction between a high speed compressible flow and a highly flexible membrane structure. The governing equation used to model the air flow are the three-dimensional compressible Euler equations. To optimize computational efficiency, the fluid governing equations are discretized using a Cartesian adaptive mesh refinement (AMR) approach. Different levels of refinement are used in different regions of the domain depending on resolution needs. The canopy fabric of the parachute structure is represented by a triangulated surface mesh. The deformation process of the canopy and suspension lines and risers are modeled by the mass-spring system. The fluid?structure interaction (FSI) is modeled using a loosely coupled approach. This interaction is modeled only around the interface boundary using a variant of the ghost-fluid method. Several simulations are carried out at different Mach numbers. Comparisons of drag coefficient, breathing frequency and their dependence on Mach number are discussed. These simulations reproduce the large canopy-area unsymmetrical oscillations that are usually observed in these supersonic parachute systems.

목차

Abstract
1. Introduction
2. Simulation Methodology
3. Results
4. Conclusions
5. References

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