Particles don't stick to the wall with stick BC

preichl · December 8, 2010, 04:04

Hi All,

I am running a case using icoLagrangianFoam (in OF 1.6-ext) and I am finding that although the particles reach the wall and stop at a particle radius away, they are not stuck to the wall (and can be blown off if the local flow field is sufficiently strong).
I have the wall interaction set as follows:
StandardWallInteractionCoeffs
{
type stick;
}

This issue seems very similar to the post at
http://www.cfd-online.com/Forums/ope...ting-wall.html
which suggests that a solution to this has been implemented.

Should I be seeing this in OF 1.6-ext? (i.e. should the fix mentioned in the link above be in OF-1.6-ext) and if not, does anyone know what I can try to fix this?.

I also have OF 1.7.x installed, although my first attempt at compiling icoLagrangianFoam in 1.7.x complained about missing header files. Has anyone got icoLagrangianFoam working in 1.7.x?. I am guessing that the fix in the link above is in 1.7.x.

Any help or pointers to what I should try would be most appreciated. (i.e. can I take some of the code from 1.7.x and add it to 1.6-ext to implement the fix, or should I try and get icoLagrangianFoam working in 1.7.x).

Thanks in advance,

Paul.

preichl · December 8, 2010, 20:06

Setting the wall boundary condition to escape is good enough for what I need at the moment.

CedricVH · December 13, 2010, 10:06

This is still not fixed in OpenFOAM 1.7.x. I have submitted a bug report.

December 8, 2010, 04:04	Particles don't stick to the wall with stick BC	#1
preichl Member Paul Reichl Join Date: Feb 2010 Location: Melbourne, Victoria, Australia Posts: 33 Rep Power: 16	Hi All, I am running a case using icoLagrangianFoam (in OF 1.6-ext) and I am finding that although the particles reach the wall and stop at a particle radius away, they are not stuck to the wall (and can be blown off if the local flow field is sufficiently strong). I have the wall interaction set as follows: StandardWallInteractionCoeffs { type stick; } This issue seems very similar to the post at http://www.cfd-online.com/Forums/ope...ting-wall.html which suggests that a solution to this has been implemented. Should I be seeing this in OF 1.6-ext? (i.e. should the fix mentioned in the link above be in OF-1.6-ext) and if not, does anyone know what I can try to fix this?. I also have OF 1.7.x installed, although my first attempt at compiling icoLagrangianFoam in 1.7.x complained about missing header files. Has anyone got icoLagrangianFoam working in 1.7.x?. I am guessing that the fix in the link above is in 1.7.x. Any help or pointers to what I should try would be most appreciated. (i.e. can I take some of the code from 1.7.x and add it to 1.6-ext to implement the fix, or should I try and get icoLagrangianFoam working in 1.7.x). Thanks in advance, Paul.

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December 8, 2010, 20:06		#2
preichl Member Paul Reichl Join Date: Feb 2010 Location: Melbourne, Victoria, Australia Posts: 33 Rep Power: 16	Setting the wall boundary condition to escape is good enough for what I need at the moment.

December 13, 2010, 10:06		#3
CedricVH Member Cedric Van Holsbeke Join Date: Dec 2009 Location: Belgium Posts: 81 Rep Power: 17	This is still not fixed in OpenFOAM 1.7.x. I have submitted a bug report.