ElmerGUI Multi-body heat transfer problem
Posted: 26 Mar 2019, 15:10
Hello,
I am conducting a project where I have to simulate the flow of the coolant in a geothermal probe and its influence on the surroundings. I consider only a section of the probe as seen in the pictures. Arround is the ground, the circle is the bentonite, the 4 circles inside are the tubes (PEHD) and inside them is the fluid.
The mesh is 2D (x,y). I consider every element static, so I only used the heat equation and not Navier-Stokes.
I put a body force (-500) in the fluid circles to simulate the power taken from the probe. All the bodies are at 13.5 degrees Celsius at t=0. I chose .vtk for the output results and I view them with Paraview. Here is what I get : We can see that no conduction or convection operates in the system between the bodies. I tried to mimic the example of the Glacier and Bedrock from the Elmer Documentation but in vain.
Question :
How can I force the heat transfer between the different bodies ?
Here is my case : Please help me, I've run out of ideas to solve this.
Thank you.
EDIT : my mesh was generated with GMSH and it seems to be conformal, but I'm not sure. How can you tell ?
I am conducting a project where I have to simulate the flow of the coolant in a geothermal probe and its influence on the surroundings. I consider only a section of the probe as seen in the pictures. Arround is the ground, the circle is the bentonite, the 4 circles inside are the tubes (PEHD) and inside them is the fluid.
The mesh is 2D (x,y). I consider every element static, so I only used the heat equation and not Navier-Stokes.
I put a body force (-500) in the fluid circles to simulate the power taken from the probe. All the bodies are at 13.5 degrees Celsius at t=0. I chose .vtk for the output results and I view them with Paraview. Here is what I get : We can see that no conduction or convection operates in the system between the bodies. I tried to mimic the example of the Glacier and Bedrock from the Elmer Documentation but in vain.
Question :
How can I force the heat transfer between the different bodies ?
Here is my case : Please help me, I've run out of ideas to solve this.
Thank you.
EDIT : my mesh was generated with GMSH and it seems to be conformal, but I'm not sure. How can you tell ?