NUMERICAL-SOLUTION OF DEFORMING EVAPORATING DROPLETS AT INTERMEDIATE REYNOLDS-NUMBERS

A finite volume numerical model, using a nonorthogonal adaptive grid, has been developed to examine both steady deformed and transient defor ming droplet behavior. The model has been tested by comparison with ex isting numerical solutions and experimental data. Computations of the steady state evaporation of n-heptane droplets in high-temperature air (T-infinity = 1000K, 10 less than or equal to Re-infinity less than or equal to 100, We(infinity) less than or equal to 10) show deformed oblate shapes with major axes perpendicular to the mean flow direction . Using volume equivalent diameters, predictions based on existing Nus selt and Sherwood number correlations for spherical droplets are in go od agreement with the numerical results. A new correlation is presente d for Be drag coefficient of deformed vaporizing droplets.