%A"Berthoud, G" %A"Valette, M" %D1993 %I; CEA Centre d`Etudes de Grenoble, 38 (France). Dept. de Thermohydraulique et de Physique %2 %J[] %K22 GENERAL STUDIES OF NUCLEAR REACTORS, 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS, 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE, FUEL-COOLANT INTERACTIONS, T CODES, PWR TYPE REACTORS, REACTOR ACCIDENTS, 220900, 210200, 990200, REACTOR SAFETY, POWER REACTORS, NONBREEDING, LIGHT-WATER MODERATED, NONBOILING WATER COOLED, MATHEMATICS AND COMPUTERS %PMedium: X; Size: 23 p. %TDevelopment of a multidimensional model for the premixing phase of a fuel-coolant interaction %XA transient, three-dimensional, four field model is under development to deal with the premixing of large amounts of molten corium falling down in the lower plenum of a PWR. This paper presents the main features of the code, written in as mechanistic a manner as possible, in order to provide best-estimate results. Calculations with a two-dimensional, three-field version of TRIO MC of the FARO Scoping Test are presented. %0Conference %NCEA-CONF-11461; CONF-931005-;Other: ON: DE94609251; TRN: FR9303883003306 %1 %CFrance %Rhttps://doi.org/ Other: ON: DE94609251; TRN: FR9303883003306 FRN %GEnglish