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논문 기본 정보

자료유형
학술저널
저자정보
Changhyun Kim (POSTECH) JaeHyeon Park (Doosan Heavy Industries & Construction) Jehyun Baek (POSTECH)
저널정보
한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.11 No.1
발행연도
2018.3
수록면
1 - 12 (12page)
DOI
10.5293/IJFMS.2018.11.1.001

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초록· 키워드

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Flow of steam is different from other gas flows and involves droplet generation in the flow field. This phase-transition affects not only flow aspects, but also machine performance in a negative way. These days, CFD is widely used in machine design and optimization processes, so phase-transition phenomena in steam flows should be considered in CFD to predict the internal flows precisely. In the past, non-equilibrium wet-steam model was implemented on in house code T-Flow and it was applied to steady calculations of a steam turbine model with changing stator/rotor interface. The results showed that mixing plane method is not appropriate to simulate steam condensing flow and frozen rotor method can be affected by relative position between a stator and a rotor. Therefore, steady wet-steam flows with non-equilibrium phase-transition were simulated for a steam turbine model in this study with 4 different stator-rotor positions and their effects on the wet-steam flow fields were investigated in detail.

목차

Abstract
1. Introduction
2. Theoretical Backgrounds
3. Numerical Analysis
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-554-001894922