지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 153 - 159 (7page)
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초록· 키워드
오류제보하기
In order to obtain insight into the physics of micro-nozzle flows, numerical simulations of rarefied flows in a convergent-divergent micro-nozzle is investigated by using the Direct Simulation Monte Carlo (DSMC) method. This method can be applied to a wide range of rarefied flows within regimes that neither Navier-Stokes nor collisionless Boltzmann equations are appropriate. In the present work, the molecular collision kinetics is modeled by the variable hard sphere model and energy exchange between kinetic and internal modes is controlled by the phenomenological Larsen- Borgnakke statistical model. Simulations are performed by considering a non-reacting gas model consisting of two chemical species, N2 and O2 for various back pressures and results are presented for the computed flow field quantities. Comparisons are made with the available experimental data, and the factors which affect the solutions are discussed. This study revealed that in micro-nozzles surface effects play the main role on the flow structure. Separate calculations are also performed for the “macro-nozzle” flows and detailed comparisons between typical rarefied and continuum behaviors are made.
목차
ABSTRACT
1. Introduction
2. Numerical Methods
3. Validation
4. Results and discussion
5. Conclusion
References
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