TRANSIENT HEATING AND VAPORIZATION OF A COOL DENSE CLOUD OF DROPLETS IN HOT SUPERCRITICAL SURROUNDINGS

Transient heating and vaporization of cool dense spherical droplet-clo uds are studied at super-critical conditions. High-pressure effects ar e considered for the outer homogeneous and inner heterogeneous flows o f the cloud. Numerical results obtained from the present study reveal that droplets in such clouds are less likely to reach the critical mix ing state than an isolated single droplet at equivalent supercritical conditions. Heat transfer from the hot surroundings is also less influ ential at supercritical conditions, resulting in relatively invariant- sized droplet-clouds. For such dense droplet clouds, the D-2-law is in valid at both subcritical and supercritical conditions.