I would like to know if it is possible and how to simulate the condensation phenomena in a volume subjected to a vapor injection using FLUENT. Are the mass and wall condensation well predicted ? Thanks for your replays and advices.

Hi, If the secondary phase volume fraction is injected then i think u might have to use eulerian-dispersed model. Or else if the vapor volume fraction is appreciable then it would be better to use eulerian-eulerian fluid model. I think this model works pretty good. Lastly, u can try VOF if vapor volume fraction is very high or if you want to track the interface.

Madhavan

thanks for your advice. is it easy to simulate condensation phenomena with fluent ? Does Fluent provide specific tools to simulate condensation or the user has to progam the phase changement and the transport of vapor via user subroutine ? thanks for your replay.

Hi, If you are using Eulerian-Eulerian fluid model then you don't have to make any changes in the subroutine. Refer to the tutorial problem (boiling water in a container). I think the same procedure should be good enough for modeling condensation. There are two models (evaporation and condensation) available. depending on the temperatures (T<Tsat, T>Tsat) you specify i think it will choose either evaporation or condensation. I think u proceed with this as a start point and hope u will explore more in future.

Madhavan