How to evaluate solution for inert particle in water

sujay · April 16, 2011, 08:52

I am modelling inert solid particle (density ~ 950 kg/m3) in water. Domain is tank with inlet at top corner and outlet at opposite bottom corner. Top surface is open to atomisphere and particle leave once it reach to top.

Particles are injected at the inlet ( volume fraction < 1 %). I want to know how much particle fraction is carried away by water at outlet, left thorogh top surface and balnace in tank.

Sujay

ghorrocks · April 17, 2011, 08:33

And your question is.......... ?

Please don't say "How do you model this?". I have written "Do the tutorials" enough on this forum.

sujay · April 18, 2011, 01:13

I am trying in CFX & did tutorials needed for the present case ( Flow through butterfly valve, Gas liquid flow in airlift reactor & Coal combustion).

I had used appropriate models to set the case and solved but not able to how to check the balance of particle incoming in system, remain in system and leaving system.

Sujay

ghorrocks · April 18, 2011, 07:47

So what is your question? Are you asking how to post-process the results to find where the particles go? Or are you asking how to model this sort of flow? Or that your model is not accurate?

sujay · April 18, 2011, 08:27

Yes sir I am interested in post processing of results. i want to know distribution of particle preferably volume fraction leaving system and accumulated in system with respect to incoming particles.

Is it possible to get this in terms of particle size distribution ?

Also need fluid and particle distribution along few planes.

Sujay

ghorrocks · April 18, 2011, 08:45

This is all straight forward post processing for a particle tracking simulation. This is covered in the tutorials I think.

Quote:

i want to know distribution of particle preferably volume fraction leaving system

Then look at the volume fraction at the outlet.

Quote:

and accumulated in system

Then look at the volume fraction in the system.

Quote:

Is it possible to get this in terms of particle size distribution ?

Do you use a particle tracking model which includes particle size distributions? If yes, then you can sort the particle tracks based on many parameters, including particle size.

As I said, this is all basic post-processing of a multiphase run. It should be pretty obvious.

sujay · April 18, 2011, 09:35

Please tell more details from which function in post processing i get these values

April 16, 2011, 08:52	How to evaluate solution for inert particle in water	#1
sujay Member Sujay Join Date: Apr 2010 Location: Karnataka, India Posts: 41 Rep Power: 16	I am modelling inert solid particle (density ~ 950 kg/m3) in water. Domain is tank with inlet at top corner and outlet at opposite bottom corner. Top surface is open to atomisphere and particle leave once it reach to top. Particles are injected at the inlet ( volume fraction < 1 %). I want to know how much particle fraction is carried away by water at outlet, left thorogh top surface and balnace in tank. Sujay

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CFL Condition	Matt Umbel	Main CFD Forum	19	June 30, 2020 09:20
Water vapour condensation in CFX-5.7.1	hdj	CFX	1	November 27, 2005 08:15
Particle track files	Sankalp	CFX	1	August 26, 2004 00:25
Particle Trajectory calculation when particle hit	yueroo	FLUENT	2	February 28, 2001 05:26
Wall functions	Abhijit Tilak	Main CFD Forum	6	February 5, 1999 02:16

April 17, 2011, 08:33		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	And your question is.......... ? Please don't say "How do you model this?". I have written "Do the tutorials" enough on this forum.

April 18, 2011, 01:13		#3
sujay Member Sujay Join Date: Apr 2010 Location: Karnataka, India Posts: 41 Rep Power: 16	I am trying in CFX & did tutorials needed for the present case ( Flow through butterfly valve, Gas liquid flow in airlift reactor & Coal combustion). I had used appropriate models to set the case and solved but not able to how to check the balance of particle incoming in system, remain in system and leaving system. Sujay

April 18, 2011, 07:47		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	So what is your question? Are you asking how to post-process the results to find where the particles go? Or are you asking how to model this sort of flow? Or that your model is not accurate?

April 18, 2011, 08:27		#5
sujay Member Sujay Join Date: Apr 2010 Location: Karnataka, India Posts: 41 Rep Power: 16	Yes sir I am interested in post processing of results. i want to know distribution of particle preferably volume fraction leaving system and accumulated in system with respect to incoming particles. Is it possible to get this in terms of particle size distribution ? Also need fluid and particle distribution along few planes. Sujay

April 18, 2011, 09:35		#7
sujay Member Sujay Join Date: Apr 2010 Location: Karnataka, India Posts: 41 Rep Power: 16	Please tell more details from which function in post processing i get these values