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Create a wedge shaped cell-set

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Old   May 25, 2023, 16:47
Default Create a wedge shaped cell-set
  #1
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Gabriel Jacobina
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Hello, I'm using Open Foam 10 with the chtMultiRegionFoam. My goal is to firstly simulate only the solid part of the problem using fixed value and fixed gradient BC.

But I'm having trouble assigning my domain (a wedge) to the solid cell set. I couldn't find a function in the topoSet user guide https://www.openfoam.com/documentati...g-topoSet.html. To specify a Wedge as an cell set. If possible I really would like some help. My blockMeshDict file is as bellow:
Code:
convertToMeters 0.001;

//All in [mm]

//heights
h_0  0.0;
h_1  15.0;
h_2  25.0;
h_3  50.0;
h_4  56.0;
h_5  60;



// radii
r_b  56.0; //Bag radius
r_bc  70.0; //Bag cavity radius
r_plt  78.0; //Plate radius 
r_bp  80.0; //Base Plate radius

// Plate angle
ang 5;
angr #calc "degToRad($ang)";

//Bag
x_b #calc "$r_b*cos($angr)";
y_b #calc "$r_b*sin($angr)";
y_b_n #calc "-$y_b"; 

//layer 0
x_0 #calc "$r_bc*cos($angr)";
y_0 #calc "$r_bc*sin($angr)";
y_0n #calc "-$y_0"; 

//layer 1
x_1 #calc "$r_bp*cos($angr)";
y_1 #calc "$r_bp*sin($angr)";
y_1n #calc "-$y_1"; 

//layer 2
x_2 #calc "$r_plt*cos($angr)";
y_2 #calc "$r_plt*sin($angr)";
y_2n #calc "-$y_2"; 




vertices
(
	//SAT bag Points
    (0 0 $h_1)			//0
    ($x_b $y_b $h_1)	//1
    ($x_b $y_b_n $h_1)	//2
    (0 0 $h_2) 			//3
    ($x_b $y_b $h_2)	//4
    ($x_b $y_b_n $h_2)	//5
	
	

);

blocks
(
    hex (0 2 1 0 3 5 4 3) (16 5 4) simpleGrading (1 1 1)

);

boundary
(
	//Base cilinder
	wedge_BC
    {
        type empty;
        faces
        (
			(0 3 3 0)
        );
    }

	
	empty_BC
	{
        type empty;
        faces
        (
			(0 3 4 1)
            (0 2 5 3)
        );
    }
	
	
	up_down_BC
	{
		type patch;
        faces
        (
	        (3 5 4 3)
			(0 1 2 0)
		);
    }

	frontal
	{
		type patch;
		faces
		(
			(2 1 4 5) 
		);
	}
	
);

edges
(
	arc 1 2 ($r_b 0 $h_1)
    arc 4 5 ($r_b 0 $h_2)

);
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Old   June 6, 2023, 03:10
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Vinzenz Götz
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so you want an axissymmetric simulation with one wedge cell?
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Old   June 6, 2023, 13:35
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Gabriel Jacobina
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Greetings Vinzmann,

I have already solved the issue. The problem was that I forgot that the order you specify the vertices in the "hex (1 2 3 ...)" statement has to define a right handed local coordinates system as described in [link]

The correct order was:

hex (0 2 1 0 3 5 4 3) (25 10 10) simpleGrading (1 1 1)
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Tags
cellset, chtmultiregionfoam, wedge


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