PROCEEDINGS OF IBRAE RAS ISSUE 2: NUMERICAL INVESTIGATIONS OF NATURALLY-CONVECTIVE FLOWS IN SOLIDIFYING LIQUID

Ed. by L.A. Bolshov, V.F. Strizhov

In the course of performed investigations several important outcomes were achieved and a series of interesting mechanisms were identified that may be of use while developing simplified codes for analysis of individual severe-accident phases for cases of retention of molten fuel-containing masses inside the vessel. The first section describes numerical methods for solution of 2D hydrodynamics problems for solidifying liquid, the second section provides the results of parametric numerical investigation of main heat- and masstransfer mechanisms of heat-generating liquid for the case of melt retention by reactor vessel. The attention is focused on studying major heat- and mass-transfer mechanisms of heat-generating liquid taking account of phase transitions through the application of a computational algorithm based on the fictitious-area method under “flow function, vorticity” variables. Effectiveness of calculations, being an advantage of the approach used, enables application of a unified computational algorithm within arbitrary areas for the category of problems under consideration. Owing to its originality and efficiency, the offered approach may be recommended to specialists of nuclear-power industry and adjacent areas.

Bibliographical reference

Numerical Investigations of Naturally-convective Flows in Solidifying Liquid / Edited by Professor V. F. Strizhov // Proceedings of Nuclear Safety Institute RAS (IBRAE RAS) / Edited by corresponding member of RAS L. A. Bolshov. — Issue 2. — Moscow: Nauka, 2007. — 190 p.: illustrations.