how can boil two materials simultaniously

umair64 · August 25, 2015, 18:36

hi ghorrocks, stephen,,,, i need your help in the following problem,,,

i want to enter 90 % water and 10% nitric acid from inlet so that both materials will evaporate in the domain,,,, then vapours of both materials leave from outlet above their saturation temp.
how can i do that in cfx?
i enter both separately then use boiling model for both water and nitric acid but cfx solver gives the error that i cant use two wall boiing models simultaneously,,, please help how can i overcome this problem....

Steffen595 · August 25, 2015, 20:15

haven't done boiling simulations yet.
There would be 2 boiling temperatures, so one should be boiling, one gas? Is it dispersed? Maybe that's where it thinks, it should be 2 bodies?

umair64 · August 26, 2015, 12:19

i do boilng simulation using water only,,,,, but when i use both water and nitric acid i face the error.... that i cant use use rpi boiling model twice,,,, as i use for both nitric acid and water....

August 25, 2015, 18:36	how can boil two materials simultaniously	#1
umair64 New Member Muhammad Umair Join Date: Aug 2015 Posts: 24 Rep Power: 11	hi ghorrocks, stephen,,,, i need your help in the following problem,,, i want to enter 90 % water and 10% nitric acid from inlet so that both materials will evaporate in the domain,,,, then vapours of both materials leave from outlet above their saturation temp. how can i do that in cfx? i enter both separately then use boiling model for both water and nitric acid but cfx solver gives the error that i cant use two wall boiing models simultaneously,,, please help how can i overcome this problem....

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August 25, 2015, 20:15		#2
Steffen595 Senior Member Join Date: May 2012 Location: Melbourne Posts: 161 Rep Power: 14	haven't done boiling simulations yet. There would be 2 boiling temperatures, so one should be boiling, one gas? Is it dispersed? Maybe that's where it thinks, it should be 2 bodies?

August 26, 2015, 12:19		#3
umair64 New Member Muhammad Umair Join Date: Aug 2015 Posts: 24 Rep Power: 11	i do boilng simulation using water only,,,,, but when i use both water and nitric acid i face the error.... that i cant use use rpi boiling model twice,,,, as i use for both nitric acid and water....