A NUMERICAL MODEL FOR TURBULENT NON-EQUILIBRIUM DISPERSED FLOW HEAT TRANSFER.

AN ANALYTICAL MODEL HAS BEEN DEVELOPED FOR THE PREDICTION OF TWO-PHASE TURBULENT, NON-EQUILIBRIUM, DISPERSED FLOW HEAT TRANSFER IN POST-CHF(CRITICAL HEAT FLUX) FLOW BOILING. THE THERMODYNAMIC NON-EQUILIBRIUM IS TREATED THROUGH A VAPOUR GENERATION SOURCE FUNCTION IN THE VAPOUR CONSERVATION EQUATIONS TO REPRESENT THE HEAT SINK/MASS SOURCE EFFECT OF THE DROPLET EVAPORATION. EFFECTS OF VARIOUS COMPONENTS IN THE MODEL ARE EVALUATED. A LIMITED DATA-MODEL COMPARISON SHOWS AVERAGE DEVIATIONS OF -7. 9% AND + 6.6% FOR PREDICTED VAPOUR AND WALL SUPERHEATS WITH RESPECT TO MEASURED VALUES.