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-   -   evaporation modeling - have problem with temperature field (http://www.cfd-online.com/Forums/main/75410-evaporation-modeling-have-problem-temperature-field.html)

MOhaj April 25, 2010 00:21

evaporation modeling - have problem with temperature field
 
Hi everybody

I'm involved in two phase flow modeling of water and vapor through risers tubes in HRSG including evaporation, however I have some serious problems.
I have captured the chorn and dispersed flow regime, but after looking at the variable contours, I found that the udf is working in an awkward manner, and also the temperature field looks like a disaster. the walls are at the convection boundary condition with a flow of 840K hot gas and h=10 W/m2K but yet the temperature has a sudden drop (about 200K drop) in the middle of the field. I am really confused about that.
It would be appreciated if someone helps me


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