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논문 기본 정보

자료유형
학술대회자료
저자정보
Jaw-Yen Yang (National Taiwan University) J.C. Huang (National Taiwan Ocean University) Y S. Lai (National Chung-Shan Institute of Science and Technology) C. S. Kuo (National Chung-Shan Institute of Science and Technology)
저널정보
한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 2014년도 국제학술대회 논문집
발행연도
2014.10
수록면
371 - 376 (6page)

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초록· 키워드

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This study is based on the theory of gas dynamics and uses the Navier-Stokes equations as the governing equations to solve the fluid flow field problems of the scramjet. For the turbulent flow, we use the simple Spalart-Allmaras one equation turbulence model (S-A model) which produces better results for near wall and boundary layer flow field problems. The lower-upper symmetric Gauss-Seidel (LU-SGS) implicit scheme, whose results converge efficiently under steady state conditions, is combined with the Weighted Essentially Non-Oscillatory (WENO) scheme to construct a numerical model of the scramjet. Using the WENO scheme’s high-order accuracy and its non-oscillatory solution at discontinuous areas, we can solve supersonic flow field problems with multiple shock wave interactions. This simulation procedure is verified against two partial examples from literature to ensure its accuracy, and is then applied to a complete geometric model of a scramjet with different initial conditions for a full flow field analysis. The Mach number, density, static temperature and pressure are found and the results discussed. It is found that even when the shock waves are very close to each other, the WENO scheme produces better simulation results than other numerical approaches.

목차

Abstract
1. Introduction
2. Numerical Method
3. Results and Discussion
4. References

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