[snappyHexMesh] SHM not snapping on simple case

slaners · June 4, 2018, 14:40

Hello

I am trying to simulate a channel with cylindrical pins. My solution was to model the pins using searchableCylinder defined geometry. The castellated mesh works well. However, when it comes to the snapping phase, SHM does not snap cells on the surface of the pins. Do you have any idea where the problem might come from ?

Thanks in advance !

aow · June 4, 2018, 20:36

I haven't actually tried using either of your files with blockMesh or snappyHexMesh, but I noticed one thing right off the bat that may be an issue.

The point you picked (or perhaps forgot to pick...) for the locationInMesh point is on the edge of your domain instead of inside it as it should be since the z value of the point is 0, which is the same as your minimum z value in the blockMeshDict file you posted. Make sure the point you do pick is within your min/max xyz values and also not inside one of the "pins" you are trying to create and then try again.

slaners · June 5, 2018, 09:59

Thanks for the answer aow. I tried to move it within the domain but there hasn't been any change (it has to be outside of the pins as I am trying to get rid of them)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problems with an apparently simple case	HHOS	OpenFOAM Running, Solving & CFD	0	September 11, 2013 04:50
[snappyHexMesh] SHM not snapping	marupio	OpenFOAM Meshing & Mesh Conversion	7	January 23, 2013 22:28
[snappyHexMesh] SHM: feature edge snapping not conforming	thab	OpenFOAM Meshing & Mesh Conversion	3	November 26, 2012 15:04
Help Required With Simple Test Case	steph79	OpenFOAM Pre-Processing	4	August 3, 2010 08:45
Simple Q. How to complete a Case?	W.A.	Siemens	3	April 23, 2006 20:41

June 4, 2018, 20:36		#2
aow Member Andrew O. Winter Join Date: Aug 2015 Location: Seattle, WA, USA Posts: 78 Rep Power: 11	I haven't actually tried using either of your files with blockMesh or snappyHexMesh, but I noticed one thing right off the bat that may be an issue. The point you picked (or perhaps forgot to pick...) for the locationInMesh point is on the edge of your domain instead of inside it as it should be since the z value of the point is 0, which is the same as your minimum z value in the blockMeshDict file you posted. Make sure the point you do pick is within your min/max xyz values and also not inside one of the "pins" you are trying to create and then try again.

June 5, 2018, 09:59		#3
slaners New Member Join Date: Mar 2016 Posts: 11 Rep Power: 10	Thanks for the answer aow. I tried to move it within the domain but there hasn't been any change (it has to be outside of the pins as I am trying to get rid of them)