| adrian.delser |
January 14, 2022 13:00 |
Zero thickness plate simulation
Hi everyone, I'm trying to do a thin plate simulation, and having looked around the internet I have found references to createBaffles and topoSet in order to achieve this. None of those posts actually explain how to set up and run the simulation nor provide examples I could test (I am still quite new to openfoam). I am using a modified blockmesh file (based off the movingCone tutorial) that fills in the gap left by the movingCone with a new block. The thin plate should go where the slanted wall of the moving cone was before. I am therefore looking for a simulation of a slanted flat plate moving from rest.
It is possible that blockMesh is not the best utility for this and that snappyHexMesh would be more adapted, although I have not used it before. I also intend to move this plate vertically as well as rotate it around a certain point on its length during the simulation, although these are to be worked out later. This is in effect a zero thickness airfoil simulation.
The blockMeshDict file is as follows (the dynamicMeshDict is so far unchanged from the movingCone tutorial):
Code:
FoamFile
{
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 0.001;
vertices
(
(-7.5 0 0)
(-7 0 0)
(-3.5 0 0)
(0 0 0)
(-7.5 0.75 -0.032745707)
(-7 0.75 -0.032745707)
(-3.5 2 -0.087321886)
(0 2 -0.087321886)
(-7.5 2.5 -0.10915236)
(-7 2.5 -0.10915236)
(-3.5 2.5 -0.10915236)
(0 2.5 -0.10915236)
(-7.5 0.75 0.032745707)
(-7 0.75 0.032745707)
(-3.5 2 0.087321886)
(0 2 0.087321886)
(-7.5 2.5 0.10915236)
(-7 2.5 0.10915236)
(-3.5 2.5 0.10915236)
(0 2.5 0.10915236)
);
blocks
(
hex (0 1 5 4 0 1 13 12) (15 15 1) simpleGrading (1 1 1)
hex (2 3 7 6 2 3 15 14) (20 15 1) simpleGrading (2 1 1)
hex (4 5 9 8 12 13 17 16) (15 15 1) simpleGrading (1 1 1)
hex (5 6 10 9 13 14 18 17) (50 15 1) simpleGrading (1 1 1)
hex (6 7 11 10 14 15 19 18) (20 15 1) simpleGrading (2 1 1)
/**/
hex (1 2 6 5 1 2 14 13) (50 15 1) simpleGrading (1 1 1)
);
edges
(
);
boundary
(
movingWall
{
type wall;
faces
(
/*the line below should become the flat plate ideally*/
/*(5 6 14 13)*/
);
}
farFieldMoving
{
type patch;
faces
(
(9 17 18 10)
);
}
fixedWall
{
type wall;
faces
(
(3 7 15 3)
(7 11 19 15)
);
}
axis
{
type empty;
faces
(
(0 1 1 0)
(2 3 3 2)
/**/
(1 2 2 1)
);
}
left
{
type patch;
faces
(
(0 0 12 4)
(4 12 16 8)
);
}
farField
{
type patch;
faces
(
(8 16 17 9)
(10 18 19 11)
);
}
back
{
type wedge;
faces
(
(0 4 5 1)
(2 6 7 3)
(4 8 9 5)
(5 9 10 6)
(6 10 11 7)
/**/
(1 5 6 2)
);
}
front
{
type wedge;
faces
(
(0 1 13 12)
(2 3 15 14)
(12 13 17 16)
(13 14 18 17)
(14 15 19 18)
/**/
(1 2 14 13)
);
}
);
mergePatchPairs
(
);
Thanks! |
