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The paper deals with investigations into heat and mass transfer during condensation in the Phebus-FP containment vessel. The objective was to calibrate containment thermalhydraulics codes to render them capable of producing reliable predictions of the atmospheric conditions in the vessel for a given set of boundary conditions, since it is essential to be able to predict the atmospheric conditions for controlling the experiment. The relative humidity is the most important parameter from the point of view of aerosol physics. The codes are used to design experiments to produce atmospheres typical of various types of severe accident conditions, enabling study of aerosol physics and chemistry of real fission products under prototypical conditions.

Additional information

Authors: JONES A, JRC Ispra (IT);SHEPHERD I, JRC Ispra (IT);VON DER HARDT P, JRC Ispra (IT);GAILLOT C, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: Fourth International Conference on Simulation Methods in Nuclear Engineering, Montreal (CA), June 2-4, 1993
Availability: Available from (1) as Paper EN 37334 ORA
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