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논문 기본 정보

자료유형
학술대회자료
저자정보
Arun Kumar .R (Andong National University) Deepak. D (Andong National University) Heuy Dong Kim (Andong National University)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2012년도 추계학술대회 논문집
발행연도
2012.11
수록면
82 - 87 (6page)

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초록· 키워드

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The research on micro scale flows through micro shock tubes are of growing importance due to the recent developments in many micro devices such as micro nozzles, particle delivery devices, etc. At very small length scales, the flow field becomes rarefied and the viscous effects increases. Some of the recent studies on micro shock tubes pointed out the shock wave propagation characteristics under rarefied and viscous conditions, but they assumed a sudden diaphragm rupture process. In real situation, the diaphragm ruptures gradually and this phenomenon can significantly affect the shock wave propagation characteristics. In the present study numerical simulations have been carried out on a micro shock tube of 3㎜ diameter under rarefied condition with a finite diaphragm rupture process. The rarefaction effect was modeled using Maxwell’s slip wall conditions. The main objectives of the present study are to understand the flow evolution and shock propagation characteristics inside a micro shock tube with gradual diaphragm rupture process and at rarefied gas conditions. The results show that the shock front will not be generated immediately next to diaphragm, rather will have a formation distance from the diaphragm. Also, the gradual rupture process reduces the shock strength and reduces the shock propagation distance when compared to sudden diaphragm rupture process.

목차

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

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UCI(KEPA) : I410-ECN-0101-2014-550-000186909