COMPUTER SIMULATION OF HEAT AND MASS TRANSFER PROCESSES UNDER THE EFFECT OF REACTOR CORE MELTING IMPACTING THE REACTOR VESSEL

V. V. Dolgov, M. V. Kascheev, Yu. V. Muranov
VANT. Ser.: Mat. Mod. Fiz. Proc. 1995. Вып.4. С. 24-36.

      This paper presents two versions of nuclear reactor vessel melting model with one of the possible severe accident scenario imitation. The description of heat transfer, mass transfer and hydrodynamic in cylindrical coordinates for two phase heating environment is given. Steel wall melting and dissolution conditions are formulated. The two-dimensional axisymmetrical and one-dimensional mathematical models are the working versions of the model described above. The implicit method ot Navier-Stokes equations solution in primitive variables has been used. The results of calculation of corium interaction with reactor vessel are presented.