CFD Online Discussion Forums - get variables by sampling

Dear All,

I used some libraries in interFOAM such as contactAngle. I run the simulation and got the results. Now I want to extract some variables by sampleDict. The problem is that for getting

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theta0_

as static contact angle or

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uwall

as velocity of cell close to wall, I do not know which patch or line I should define in the sampleDict.

I tried fixedWall patch (the wall that we apply contact angle) and also a line close to the wall, but I just can extract

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U and p

and not the contact angle. below is my sampleDict directory.

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interpolationScheme cellPoint;



setFormat    raw;

sets

(

    fixedWall

    {

        type    uniform;

        axis    x;

        start   ( 0 0 0.000002);

        end     ( 0.0008 0 0.000002);

        nPoints 100;

    }

);

fields          ( uwall U theta0_ p);

I appreciate any help to be able to extract these variables.