Remove particle in solidParticleFoam

shchepan · August 11, 2011, 02:07

Hi,
I am working with solidParticle library within OpenFOAM-1.6. I coded additional function, which change particle diameter due to the diffusion process. This function is implemented in solidParticleFoam before move function.
Now I need to remove from the cloud particles with diameters close to zero. Is there any function to remove (delete) particle from the cloud?

steffi_geier · August 11, 2011, 09:25

Hi Mihails,

I think you can delete particles if you change
td.keepParticle = true;
to
td.keepParticle = false;
for the particles which are too small for you.
You will find the line
td.keepParticle = true;
within the function "move".
Hope this will help you
Steffi

shchepan · August 11, 2011, 10:41

Dear Steffi,
thank you for answer.

Line td.keepParticle = true; is situated in the begin of move function. If I'll code somewhere in this function

HTML Code:

if (d_<=0.0)
    td.keepParticle = false;

it will remove this particle only ones for move function. Every next step move function will check this if again. But I want totally delete this particle.

I created new function sizeEvolution(), which has no argument of td. This function is implemented in the solver before move function. So I want to delete particles with zero size within sizeEvolution function. How can I do it?

AMahrla · August 12, 2011, 04:50

Possibly you could try to use the "deleteParticle" function of basic cloud (find the definition in Cloud.C or here in the doxygen) ?

shchepan · August 12, 2011, 07:29

Perfectly! Thank you, Astrid!

mayank.dce2k7 · September 8, 2013, 18:33

Hi,

Can any of you tell me how to calculate/count particle escaping from a patch in solidParticleFoam?

Regards,
Mayank

houwy · March 28, 2014, 07:25

Hello! I want change particle diameter due to the diffusion process. How can I do it! What function did you add.

houwy · April 14, 2014, 09:56

Quote:

Originally Posted by mayank.dce2k7

Hi,

Can any of you tell me how to calculate/count particle escaping from a patch in solidParticleFoam?

Regards,
Mayank

Have you solved your problem?

mayank.dce2k7 · April 16, 2014, 17:29

Yaa, I did. But I am using icoUncoupledKinematicPartcelFoam. It has in-built functionality of counting particles. I was unable incorporate that functionality in solidParticleFoam though.

August 11, 2011, 02:07	Remove particle in solidParticleFoam	#1
shchepan Member Mihails Ščepanskis Join Date: Jul 2009 Posts: 36 Rep Power: 16	Hi, I am working with solidParticle library within OpenFOAM-1.6. I coded additional function, which change particle diameter due to the diffusion process. This function is implemented in solidParticleFoam before move function. Now I need to remove from the cloud particles with diameters close to zero. Is there any function to remove (delete) particle from the cloud? houwy likes this. __________________ Mihails Ščepanskis Laboratory for Mathematical Modelling of Environmental and Technological Processes University of Latvia

August 11, 2011, 10:41		#3
shchepan Member Mihails Ščepanskis Join Date: Jul 2009 Posts: 36 Rep Power: 16	Dear Steffi, thank you for answer. Line td.keepParticle = true; is situated in the begin of move function. If I'll code somewhere in this function HTML Code: if (d_<=0.0) td.keepParticle = false; it will remove this particle only ones for move function. Every next step move function will check this if again. But I want totally delete this particle. I created new function sizeEvolution(), which has no argument of td. This function is implemented in the solver before move function. So I want to delete particles with zero size within sizeEvolution function. How can I do it? __________________ Mihails Ščepanskis Laboratory for Mathematical Modelling of Environmental and Technological Processes University of Latvia

August 12, 2011, 04:50		#4
AMahrla New Member Astrid Mahrla Join Date: May 2010 Location: Munich, Germany Posts: 22 Rep Power: 16	Possibly you could try to use the "deleteParticle" function of basic cloud (find the definition in Cloud.C or here in the doxygen) ? mbookin likes this.

August 12, 2011, 07:29		#5
shchepan Member Mihails Ščepanskis Join Date: Jul 2009 Posts: 36 Rep Power: 16	Perfectly! Thank you, Astrid! __________________ Mihails Ščepanskis Laboratory for Mathematical Modelling of Environmental and Technological Processes University of Latvia

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August 11, 2011, 09:25		#2
steffi_geier New Member Stephanie Geier Join Date: Mar 2009 Posts: 1 Rep Power: 0	Hi Mihails, I think you can delete particles if you change td.keepParticle = true; to td.keepParticle = false; for the particles which are too small for you. You will find the line td.keepParticle = true; within the function "move". Hope this will help you Steffi

September 8, 2013, 18:33		#6
mayank.dce2k7 Member India Join Date: Oct 2012 Posts: 84 Rep Power: 13	Hi, Can any of you tell me how to calculate/count particle escaping from a patch in solidParticleFoam? Regards, Mayank

March 28, 2014, 07:25		#7
houwy New Member houwy Join Date: Nov 2013 Posts: 21 Rep Power: 12	Hello! I want change particle diameter due to the diffusion process. How can I do it! What function did you add.

April 16, 2014, 17:29		#9
mayank.dce2k7 Member India Join Date: Oct 2012 Posts: 84 Rep Power: 13	Yaa, I did. But I am using icoUncoupledKinematicPartcelFoam. It has in-built functionality of counting particles. I was unable incorporate that functionality in solidParticleFoam though.