PREDICTION OF FREE SURFACE FLOW ON  CONTAINMENT FLOOR USING A SHALLOW WATER  EQUATION SOLVER

YOUNG SEOK BANG; GIL SOO LEE; BYUNG-GIL HUH; DEOG-YEON OH; SWENG-WOONG WOO

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자료유형: 학술저널

저자정보: YOUNG SEOK BANG GIL SOO LEE BYUNG-GIL HUH DEOG-YEON OH SWENG-WOONG WOO

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제41권 제8호

발행연도: 2009.1

수록면: 1,045 - 1,052 (8page)

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A calculation model is developed to predict the transient free surface flow on the containment floor following a loss-ofcoolant accident (LOCA) of pressurized water reactors (PWR) for the use of debris transport evaluation. The model solves the two-dimensional Shallow Water Equation (SWE) using a finite volume method (FVM) with unstructured triangular meshes. The numerical scheme is based on a fully explicit predictor-corrector method to achieve a fast-running capability and numerical accuracy. The Harten-Lax-van Leer (HLL) scheme is used to reserve a shock-capturing capability in determining the convective flux term at the cell interface where the dry-to-wet changing proceeds. An experiment simulating a sudden break of a water reservoir with L-shape open channel is calculated for validation of the present model. It is shown that the present model agrees well with the experiment data, thus it can be justified for the free surface flow with accuracy. From the calculation of flow field over the simplified containment floor of APR1400, the important phenomena of free surface flow including propagations and interactions of waves generated by local water level distribution and reflection with a solid wall are found and the transient flow rates entering the Holdup Volume Tank (HVT) are obtained within a practical computational resource.

#Free Surface Flow #Containment Floor #Shallow Water Equation #Finite Volume Method

참고문헌 (17)

참고문헌 신청

/ / http://www-dinma.univ.trieste.it/nirftc/research/easymesh/easymesh.html.1052 ANSYS / 2006 / FLUENT6.3 Code Manual / Fluent Inc.

American Nuclear Society / 1988 / Design Criteria for Protection against the Effects of Compartment Flooding in Light Water Reactor Plants

Bang Y. S. / 2008 / Transient Flow Field in Containment Floor Following a LOCA of APR-1400 / Proc. Korean Nuclear Society

Begnudelli L. / 2006 / Unstructured Grid Finite-Volume Algorithm for Shallow-Water Flow and Scalar Transport with Wetting and Drying / ASCE Journal of Hydraulic Engineering

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