# Help with discrete phase model(DPM) in rain simulation(airfoil)

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 October 4, 2010, 10:01 Help with discrete phase model(DPM) in rain simulation(airfoil) #1 New Member   Join Date: Sep 2010 Posts: 6 Rep Power: 9 Hi i really need some help with the DPM in fluent. I am trying to model heavy rain(1000mm/h) simulation with a NACA0012 c=1 airfoil at Re=3*10e6 but i cant find any help at the web. I read some other threads hear along with the fluent tutorial and this is what i have understand so far: For coupled simulation i have solved first the continuous phase flow field : Re=3*10^6 steady state with the standard fluent6 solver options viscus model: K-E 2-eqn realizable/enhanced wall treatment and standard model constants after it converged i went to the dpm monitor and choose 1)Interaction with continuous phase box( for 2-way coupled) 2)unsteady particle traction ( because i want spray breakup with TAB model) i do not know what to do with Particle time step Size and Number of Time Steps Tracking tab left standard options Physical Models enabled spray brakup with TAB(y0=0) I also have problems with the Injections.. appreciate any advise or hint please (where can i find tutorials for dpm?)

October 6, 2010, 11:30
#2
New Member

sreenivasa rao gubba
Join Date: Sep 2010
Location: Leeds University, UK
Posts: 27
Rep Power: 9
Quote:
 Originally Posted by haris Hi i really need some help with the DPM in fluent. I am trying to model heavy rain(1000mm/h) simulation with a NACA0012 c=1 airfoil at Re=3*10e6 but i cant find any help at the web. I read some other threads hear along with the fluent tutorial and this is what i have understand so far: For coupled simulation i have solved first the continuous phase flow field : Re=3*10^6 steady state with the standard fluent6 solver options viscus model: K-E 2-eqn realizable/enhanced wall treatment and standard model constants after it converged i went to the dpm monitor and choose 1)Interaction with continuous phase box( for 2-way coupled) 2)unsteady particle traction ( because i want spray breakup with TAB model) i do not know what to do with Particle time step Size and Number of Time Steps Tracking tab left standard options Physical Models enabled spray brakup with TAB(y0=0) I also have problems with the Injections.. appreciate any advise or hint please (where can i find tutorials for dpm?)

Hi Haris,

You can find dpm tutorials on web, if you type Fluent DPM. I believe, DPM tutorials are also available on cfd-online.com as well. I see you have a very interesting problem to solve.

Try searching for journal or conference in your area, so you can relate your problem with them.

Sree

 October 8, 2010, 06:15 #3 New Member   Join Date: Sep 2010 Posts: 6 Rep Power: 9 Thank you for your interest sreerao! i did find some tutorials with dpm..but not in cfd online..if you can sent me the link..thanks again

 January 16, 2016, 14:26 hi #4 Member   Qureshi M Z I Join Date: Sep 2013 Posts: 75 Rep Power: 6 i want to model the rain. could you please share the procedure of modeling the rain in fluent ? advance thanks

 March 8, 2016, 05:52 need help #5 New Member   JNANA ACHARYA Join Date: Nov 2015 Posts: 2 Rep Power: 0 please anyone help me in the setting panel of dpm for hweavy rain.I am having particle mass flow rate ,termivnal velocity,and diameter of the particle i am choosing surface injection and from top and bottom of the domain .but the paricles are not being tracked.could anyone help me in the setting ?

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