Boiling using the RPI Model

lbrumf2 · August 15, 2013, 16:12

Hello All,
I am trying to model saturated nucleate pool boiling on a flat plate in 2D as a step towards more complex simulations. I am using the FLUENT RPI boiling model and am using the boiling tutorial as a guide. I have repeated the simulation several times and checked my inputs several times, but I still cannot generate the vapor phase. Does anyone have any ideas?

Also, does anyone know of a UDF to model the bubble dynamics? I have seen a few people online that have done this sort of thing in FLUENT but I cannot get in touch with them.

Please help.
Thanks.

yasin.ramzani · September 26, 2013, 09:13

hi
check this:
in the phase interaction dialog box go to the mass tab
enter 1 at number of mass transfer mechanisms
select liquid phase in (from phase) and vapor phase in (to phase) and boiling in (mechanism)
then click edit, and enter saturation temperature in the saturation temperature field

August 15, 2013, 16:12	Boiling using the RPI Model	#1
lbrumf2 New Member Louisiana Join Date: May 2013 Posts: 8 Rep Power: 12	Hello All, I am trying to model saturated nucleate pool boiling on a flat plate in 2D as a step towards more complex simulations. I am using the FLUENT RPI boiling model and am using the boiling tutorial as a guide. I have repeated the simulation several times and checked my inputs several times, but I still cannot generate the vapor phase. Does anyone have any ideas? Also, does anyone know of a UDF to model the bubble dynamics? I have seen a few people online that have done this sort of thing in FLUENT but I cannot get in touch with them. Please help. Thanks.

September 26, 2013, 09:13	problem of vapor generation in RPI wall boiling	#2
yasin.ramzani New Member yasin ramzani Join Date: May 2011 Posts: 5 Rep Power: 14	hi check this: in the phase interaction dialog box go to the mass tab enter 1 at number of mass transfer mechanisms select liquid phase in (from phase) and vapor phase in (to phase) and boiling in (mechanism) then click edit, and enter saturation temperature in the saturation temperature field

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