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"Basic FSI setup" questions for model creation and post-processing

GPiove
I have some questions about the model creation:
1)     When I create the constraints for the rigid body object and I have to select the application region, I can choose any node without difference?
2)     Why I have to use the function mesh generator? How can I know the number of elements in each direction or the size?
3)     Is possible to create the euler materials without the init cond euler (shape and initial value) but creating a solid and then apply to it the property of the eulerian solid? If yes, there is any difference in the 2 approaches?
Once I created the model and compute the results using Dytran is possible to post process the results with Patran? Because I try to do so but it seems like the cube doesn’t interact with the water surface and the only output that I obtain is the displacement… I’m also interested in the plot of the pressure generated by the crashing.
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    In this example the cube is just a rigid body, so we are not tracking any stress or strain results on it, therefore we can just output the dummy result to create an output file for it to look at its movement. If you want to see the pressure and other fluid variables on the surface of the structure (rigid or deformable) then you can create a ARC output for the Coupling Surface (instead of the Elements or Grids options in the drop down). Then the variables you can choose are pressure etc.
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    In this example the cube is just a rigid body, so we are not tracking any stress or strain results on it, therefore we can just output the dummy result to create an output file for it to look at its movement. If you want to see the pressure and other fluid variables on the surface of the structure (rigid or deformable) then you can create a ARC output for the Coupling Surface (instead of the Elements or Grids options in the drop down). Then the variables you can choose are pressure etc.
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