CFX Spray Dryer Tutorial 29

Gundam · February 17, 2012, 13:29

Hi new on the forum. I'm try to learn how to simulate particle transport modeling. I've done the tutorial 29: Spray Dryer but i've obtain quite odd resuts. The Variabale H2Ol Averaged Temperature Contour has a range from a Min of 0[K] to a max of 312.631[k]. is it normal a temperature of 0[K]? The static temperature at water nozzle is 300[k] and the water temperature at air inlet is 423[k]

Regards

ghorrocks · February 18, 2012, 06:27

Are you saying the tutorial gave you these results? I have not done that tutorial for ages so cannot remember it exactly. Yes, obviously 0K is wrong. Either you did not follow the tutorial correctly or the tutorial has taken some shortcuts and not properly specified the physics.

Gundam · February 20, 2012, 06:43

Thanks for your answer. My first attempt has been done importing a .gtm file, the properties from a .ccl file and making minor changes following the tutorial.
This morning I set up the simulation automatically using a tutorial session file: Sraydryer.pre and I have obtained the same results.
H2Ol (l stand for liquid) is the name given to the water sprayed by the nozzle. The Min value 0[K] is in the area where there are not water particles. In this area the Averaged Mean Particle Diameter is also 0[m]. I reckon my results are correct; 0[k] (H2Ol average temperature) is assigned since the moment there is no water particles.
Regards

ghorrocks · February 20, 2012, 16:48

Sounds like you have worked it out.

February 17, 2012, 13:29	CFX Spray Dryer Tutorial 29	#1
Gundam New Member Marco Baretta Join Date: Feb 2012 Posts: 2 Rep Power: 0	Hi new on the forum. I'm try to learn how to simulate particle transport modeling. I've done the tutorial 29: Spray Dryer but i've obtain quite odd resuts. The Variabale H2Ol Averaged Temperature Contour has a range from a Min of 0[K] to a max of 312.631[k]. is it normal a temperature of 0[K]? The static temperature at water nozzle is 300[k] and the water temperature at air inlet is 423[k] Regards

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DPM Particle types, Spray Dryer	Mohsin	FLUENT	1	August 2, 2011 21:26
ATTENTION! Reliability problems in CFX 5.7	Joseph	CFX	14	April 20, 2010 15:45
CFX Tutorial - Fluidized Bed	Siaw Khur	CFX	4	August 20, 2006 05:37
CFX 10's solutions differ from CFX 5.7's	Atit Koonsrisuk	CFX	4	July 26, 2006 11:59

February 18, 2012, 06:27		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Are you saying the tutorial gave you these results? I have not done that tutorial for ages so cannot remember it exactly. Yes, obviously 0K is wrong. Either you did not follow the tutorial correctly or the tutorial has taken some shortcuts and not properly specified the physics.

February 20, 2012, 06:43		#3
Gundam New Member Marco Baretta Join Date: Feb 2012 Posts: 2 Rep Power: 0	Thanks for your answer. My first attempt has been done importing a .gtm file, the properties from a .ccl file and making minor changes following the tutorial. This morning I set up the simulation automatically using a tutorial session file: Sraydryer.pre and I have obtained the same results. H2Ol (l stand for liquid) is the name given to the water sprayed by the nozzle. The Min value 0[K] is in the area where there are not water particles. In this area the Averaged Mean Particle Diameter is also 0[m]. I reckon my results are correct; 0[k] (H2Ol average temperature) is assigned since the moment there is no water particles. Regards

February 20, 2012, 16:48		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Sounds like you have worked it out.