Mass balance of DPM (lagrangain) case)

May 24, 2002, 10:06

Hi!

I want to check the mass balance for a 2 phase (DPM) problem. I have an air inlet, an outlet and one liquid injector (2nd phase inlet). How can I do it, could you please tell me.

Thanks, Hiranya

May 26, 2002, 21:59

DPM is 'WEAKLY' two phase problem. That is, DPM mass ans eneggy is treated as 'SOURCE' of primary phase(in general, gas phase).

So, there is no inlet for 2nd phase. Injector is treated as 'POINT' source for one trajectory. Your injector can be modeled as (couple of tens or hundreds) of points by 'points', 'groups' or 'surfaces' and so on.

Your mass input to the primary phase from the secondary phase is reported from the 'REPORT--> VOLUME-INTEGRAL--> SUM'.

Sincerely, Jinwook

June 4, 2002, 02:03

Thanks Jin.

May 24, 2002, 10:06	Mass balance of DPM (lagrangain) case)	#1
Hiranya Guest Posts: n/a	Hi! I want to check the mass balance for a 2 phase (DPM) problem. I have an air inlet, an outlet and one liquid injector (2nd phase inlet). How can I do it, could you please tell me. Thanks, Hiranya

May 26, 2002, 21:59	Re: Mass balance of DPM (lagrangain) case)	#2
Jin-Wook LEE Guest Posts: n/a	DPM is 'WEAKLY' two phase problem. That is, DPM mass ans eneggy is treated as 'SOURCE' of primary phase(in general, gas phase). So, there is no inlet for 2nd phase. Injector is treated as 'POINT' source for one trajectory. Your injector can be modeled as (couple of tens or hundreds) of points by 'points', 'groups' or 'surfaces' and so on. Your mass input to the primary phase from the secondary phase is reported from the 'REPORT--> VOLUME-INTEGRAL--> SUM'. Sincerely, Jinwook

June 4, 2002, 02:03	Re: Mass balance of DPM (lagrangain) case)	#3
Hiranya Guest Posts: n/a	Thanks Jin.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mass balance problem in multiphase model	mdsanij1	FLUENT	0	July 28, 2009 17:01
Multiphase mass balance	GZD	Siemens	0	August 6, 2008 14:37
particle, parcel and mass flow rate balance	flybird	FLUENT	0	May 24, 2007 11:44
Free surface boudary conditions with SOLA-VOF	Fan	Main CFD Forum	10	September 9, 2006 13:24
mass balance discrepancy?	jeff berg	CFX	5	February 2, 2005 20:16