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

[Gmsh] Not able to create interface using Gmsh

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   March 8, 2024, 02:17
Default Not able to create interface using Gmsh
  #1
New Member
 
PA
Join Date: Feb 2024
Posts: 1
Rep Power: 0
pasai is on a distinguished road
Hello Foamers

I have been trying to create a multi-region simulation that consists of inner walls and baffles. I am using Gmsh and after creating my 3D mesh with desired volumes and surfaces, when I import it in openFoam (by converting the mesh) and split the mesh into regions, I only get the outside wall as an interface but the inner baffles are not present/recognized.

Here's the 2D drawing of my test case:
Code:
------------------------------
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |        |       |      |
|    |                |      |
|    |   Water        |      |
|    ------------------      |
|   Soil                     |
------------------------------
A 3D volume named "water" (Vol1), is divided by a partition (for inlet and outlet) using a baffle. The boundaries of the 3D partition along with the baffle are grouped together and defined as a surface named "metal". This entire volume is placed inside another 3D volume named "soil" (Vol2).

Here's the code for Gmsh
Code:
// Gmsh project created on Mon Feb 26 12:28:25 2024
SetFactory("OpenCASCADE");
//+
Box(1) = {0, 0, 0, 1.5, 1, 2};
//+
Box(2) = {0.5, 0.25, 0.5, 0.5, 0.5, 1.5};
//+
Rectangle(13) = {0, 0, 0.05, 1, 0.5, 0};
//+
//+
Rotate {{0, 1, 0}, {0, 1, 0}, -Pi/2} {
  Surface{13};
}
//+
Translate {0.8, 0.25, 1} {
  Surface{13};
}
//+
b() = BooleanFragments{ Volume{1}; Delete; }{ Surface{7,11,9,10,8}; Delete; };
//+
c() = BooleanFragments{ Volume{2}; Delete; }{ Surface{13}; Delete; };
//+
Coherence;
//+
Physical Volume("soil", 45) = {3};
//+
Physical Volume("water", 46) = {2};
//+
Physical Surface("inlet", 47) = {13};
//+
Physical Surface("outlet", 48) = {15};
//+
Physical Surface("metal", 49) = {8, 14, 7, 12, 11, 16};
//+
Physical Surface("wall", 50) = {22, 20, 19, 17, 18, 21};
Now the mesh is converted to OF by using:
Code:
gmshToFoam Model.msh
and then the mesh is split using:
Code:
splitMeshRegions -cellZones
When this happens a interface is defined for water_to_soil and soil_to _water but it only consists of the vol1 walls and doesn't include the baffle.

What am I missing? Or what else can I do to include the baffle?
pasai is offline   Reply With Quote

 

Tags
cht modelling, gmsh, meshing, openfoam


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
sliding mesh problem in CFX Saima CFX 46 September 11, 2021 08:38
My radial inflow turbine Abo Anas CFX 27 May 11, 2018 02:44
Error - Solar absorber - Solar Thermal Radiation MichaelK CFX 12 September 1, 2016 06:15
[GAMBIT] How to plot S pipe mariam.sara ANSYS Meshing & Geometry 36 November 7, 2013 16:22
Actuator disk model audrich FLUENT 0 September 21, 2009 08:06


All times are GMT -4. The time now is 19:10.