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How to define the geometry of an inlet?

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Old   March 15, 2014, 21:08
Default How to define the geometry of an inlet?
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Hi all,

I am trying to simulate flow through that passes through a sluice gate and into a flume. I have been trying to represent the flow from the sluice gate as an inlet patch that is part of a face while a wall composes the rest of that face. In doing so I get the following error:

Code:
FOAM FATAL ERROR: 
face 0 in patch 0 does not have neighbour cell face: 4(0 8 9 1)
Here is the rest of my geometry:

Code:
vertices
(   //Domain
    (0 0 0)         //0
    (0 0 0.31)      //1
    (20 0 0.31)     //2
    (20 0 0)        //3
    (0 0.45 0)      //4
    (0 0.45 0.31)   //5
    (20 0.45 0.31)  //6
    (20 0.45 0)     //7
    
    //Inlet
    (0 0.02551 0)   //8
    (0 0.02551 0.31)//9
);

blocks
(
    hex (0 1 2 3 4 5 6 7) (25  25 15) simpleGrading (1 1 1)
);

edges
(
);

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 8 9 1) 
        );
    }

    walls
    {
        type wall;
        faces
        (
            (0 3 7 4) //sidewall
            (1 2 6 5) //sidewall
            (0 1 2 3) //floor of channel
            (8 4 5 9) //above inlet          
        );
    }

    outlet
    {
        type patch;
        faces
        (
            (2 6 7 3) 
        );
    }
    atmosphere
    {
        type patch;
        faces
        (
            (0 3 7 4)
            (8 4 5 9)
            (1 5 6 2)
            (1 3 2 0)
        );
    }
);
I understand why I am getting this error, but now I'm wondering how can I represent the flow from the sluice gate so that the flow depth from the inlet is constant?
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Old   March 17, 2014, 04:20
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i think the problem is, that you wanna build up an internal face and not a boundary.

maybe you could have a look at the createbaffles tool?
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blockmeshdict block mesh, flumes, inlet and outlet

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