A LATTICE BOLTZMANN COUPLED TO FINITE VOLUMES METHOD FOR SOLVING PHASE CHANGE PROBLEMS

International audienceA nu mer i cal scheme cou pling lat tice Boltzmann and fi nite vol umes ap proaches has been de vel oped and qual i fied for test cases of phase change prob lems. In this work, the cou pled par tial dif fer en tial equa tions of mo men tum con ser va tion equa tions are solved with a non uni form lat tice Boltzmann method. The en ergy equa tion is discretized by us ing a fi nite volume method. Sim u la tions show the abil ity of this de - vel oped hy brid method to model the ef fects of con vec tion, and to pre dict trans fers. Benchmarking is op er ated both for con duc tive and con vec tive sit u a tion dom i nat ing solid/liq uid tran si tion. Com par i sons are achieved with re spect to avail able an a lyt i - cal so lu tions and ex per i men tal re sults