CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[snappyHexMesh] Meshing of Nanoparticle

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 1, 2021, 14:49
Default Meshing of Nanoparticle
  #1
New Member
 
Zach Style
Join Date: May 2019
Location: Rapid City, South Dakota
Posts: 1
Rep Power: 0
zstyle is on a distinguished road
I am trying to simulate the heating of a nano prolate spheroid in a fluid to compare with analytical results. I created a prolate spheroid in FreeCAD of mm scale and imported it into snappyMultiRegionHeater and have gotten good results. When I try to import nano scale spheroid, I run into errors in snappyHexmesh:

'Cell 1 at (-9e-08 -9.666667e-08 -9.666667e-08) is inside cellZone fluid from locationInMesh (9e-10 9e-10 5.9e-09) but already marked as being in zone ellipse
This can happen if your surfaces are not (sufficiently) closed.'

Does this mean the .stl file exported from FreeCAD has not defined surfaces properly? Are there any other CAD programs that can define an ellipsoid at the nano-scale?

Is there a better way to get around this? I have tried transformPoints -scale('x x x'), but I am not really sure where to define it in snappyHexMeshDict.

Should I try and define and mesh the fluid and particle in Gmsh or any other meshing programs and then bring it over to mutiRegionHeater? Does anybody have any tutorials on this?

Can I define the prolate spheroid in snappyHexMeshDict?


What route do you gals/guys recommend to take?

Thanks,

Zach
zstyle is offline   Reply With Quote

Reply

Tags
meshing 3d, nano

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ANSYS Meshing] only automatic meshing works, kazra ANSYS Meshing & Geometry 2 February 23, 2017 11:38
[ICEM] Flow channel meshing problems StefanG ANSYS Meshing & Geometry 19 May 15, 2012 06:44
[ANSYS Meshing] Meshing strategy for External Flows Hybrid ANSYS Meshing & Geometry 0 January 24, 2012 14:27
Best Meshing scheme for Cylinder Nutrex Main CFD Forum 4 July 29, 2008 11:03
Volume Meshing & Face Meshing? singularity of grid ken FLUENT 0 September 4, 2003 11:08


All times are GMT -4. The time now is 12:18.