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Implicit Coupling of Fluid-Dynamic Systems: Application to Multidimensional Countercurrent Two-Phase Flow of Water and Steam
Volume 129 · Number 3 · July 1998 · Pages 305-310
Technical Paper
Udo Graf
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The German ATHLET thermal-hydraulic system code has been coupled with a two-dimensional module simulating the downcomer of a pressurized water reactor. To be efficient, this coupling had to be implicit in time. The countercurrent two-phase flow of water and steam in the downcomer of a reactor pressure vessel was simulated using this combined code system. The implicit coupling procedure, as well as the results of a postcalculation of an experiment of the Upper Plenum Test Facility, are described.
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