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HYDRODYNAMIC SOLVER FOR A TRANSIENT, TWO-FLUID, THREE-FIELD MODEL ON UNSTRUCTURED GRIDS  

Jeong, J.J. (한국원자력연구원)
Yoon, H.Y. (한국원자력연구원)
Kim, J. (한국원자력연구원)
Park, I.K. (한국원자력연구원)
Cho, H.K. (한국원자력연구원)
Publication Information
Journal of computational fluids engineering / v.12, no.4, 2007 , pp. 44-53 More about this Journal
Abstract
A three-dimensional (3D) unstructured hydrodynamic solver for transient two-phase flows has been developed for a 3D component of a nuclear system code and a component-scale analysis tool. A two-fluid three-field model is used for the two-phase flows. The three fields represent a continuous liquid, an entrained liquid, and a vapour field. An unstructured grid is adopted for realistic simulations of the flows in a complicated geometry. The semi-implicit ICE (Implicit Continuous-fluid Eulerian) numerical scheme has been applied to the unstructured non-staggered grid. This paper presents the numerical method and the preliminary results of the calculations. The results show that the modified numerical scheme is robust and predicts the phase change and the flow transitions due to boiling and flashing very well.
Keywords
A Transient Two-fluid Three-field Model; Unstructured Grid; Semi-implicit ICE Scheme;
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