Articles techniques et présentations

This work falls into the framework of an ESA experiment, which consists of observing the behavior of patterns and structures that can be formed after instability onset in a HFE7100 liquid layer, evaporating into a nitrogen gas flow. This study is performed by a three-dimensional numerical simulation of the transient temperature and fluid motion. The results show that first several small rolls are formed near the surface, caused by the surface-tension effect. Due to buoyancy, as time proceeds, the rolls grow towards the bottom of the liquid layer. Then the rolls also grow in horizontal direction merging with each other until a steady configuration is obtained. A relation is sought between the patterns at the interface and the evaporation rate.