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http://dx.doi.org/10.5407/JKSV.2011.9.3.059

Visualization of Air Absorption Induced by Free Surface Vortex in the Pump Sump Using Multi-phase Flow Simulation  

Park, Young-Kyu (부경대학교 대학원 메카트로닉스공학과)
Li, Kui. Ming. (부경대학교 대학원 메카트로닉스공학과)
Choi, Yoon-Hwan (부경대학교 기계자동차공학과)
Lee, Yeon-Won (부경대학교 기계자동차공학과)
Publication Information
Journal of the Korean Society of Visualization / v.9, no.3, 2011 , pp. 59-64 More about this Journal
Abstract
In this study the change of free surface vortex is expressed through the time volume fraction using multiphase unsteady condition in sump, because in previous studies of the pump sump did not represent the behavior of the free surface vortex exactly due to the reason it was calculated using single phase and steady condition. The reliability of the computational analysis is verified through comparing experimental results with that of present numerical analysis. Homogeneous free surface model is used to apply interactions of air and water. The results show that the free surface vortex can be identified on the isotropic surface at air volume fraction 1%~5%. The vortices make an air column from the free surface to the sump intake and are created and destroyed repeatedly. The behavior of free surface vortex at numerical analysis is quite similar to experimental test. The result of vortex motion according to time, works on a cycle.
Keywords
Free Surface Vortex; Homogeneous Model; Multi-phase Flow; Volume Fraction; Unsteady Condition;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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