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논문 기본 정보

자료유형
학술대회자료
저자정보
NGO ICH LONG (창원대학교) BYEONG ROG SHIN (창원대학교)
저널정보
한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 2011년도 추계학술대회
발행연도
2011.11
수록면
174 - 179 (6page)

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초록· 키워드

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A commonly physical phenomenon encountered in any pump sump system in which its significant influence to the total hydraulic performance of pump system plays an important role in the field of fluid engineering, is the formation of free surface and submerged vortices. As a result, a study of their behavior and formative mechanism is considered in this paper by using numerical approach. In which the Reynolds-Averaged Navier-Stokes (RANS) equations and k-omega Shear Stress Transport turbulence model used to describe the properties of turbulent flows, in company with VOF multiphase model, are implemented by Fluent code with multi-block structured grid system. In the numerical simulation, the calculated streamlines and vortex core lines are used to classify visually surface vortices, as well as submerged vortices. It is shown that the free surface vortex is identified by the concavity of liquid region from the free surface and swirling flow at that own plane. To determine the indefinite behavior of these vortices corresponding to each given flow rate at the same water level, some testing of them are considered here in such a manner that the flow pattern of surface vortex in each case are obtained interestingly similar to the obtained results from experiment.

목차

1. Introduction
2. Configuration of test model
3. Numerical simulation
4. Numerical result
5. Conclusion
Acknowledgment
References

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UCI(KEPA) : I410-ECN-0101-2013-422-001395601