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[Other] [dynamicMesh] Implementing a linear oscillating wall BC??? |
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October 21, 2014, 09:12 |
[dynamicMesh] Implementing a linear oscillating wall BC???
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#1 |
New Member
Miha Pogačar
Join Date: Jun 2014
Posts: 3
Rep Power: 12 |
Hello,
I'm a dynamicMesh newbie trying to simulate (in 2D) an ultrasonic horn in water. I've been trying to implement a moving wall BC - the horn face zone oscillating in the vertical direction, but failed to do so. I've searched through the forum and found some relevant info, but I can't make out what is the most effective way to prescribe sinusoidal oscillation of the horn. My blockMeshDict file: Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.3.0 | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object blockMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // convertToMeters 1e-3; vertices // P : (X Y Z) ( // * * * * * * * * * * * * * // Ravnina Z = 0 mm (0 0 0) // 00 (6.15 0 0) // 01 (18.85 0 0) // 02 (25 0 0) // 03 (25 1 0) // 04 (18.85 1 0) // 05 (6.15 1 0) // 06 (0 1 0) // 07 // * * * * * * * * * * * * * // Ravnina Z = 120 mm (0 0 120) // 08 (6.15 0 120) // 09 (18.85 0 120) // 10 (25 0 120) // 11 (25 1 120) // 12 (18.85 1 120) // 13 (6.15 1 120) // 14 (0 1 120) // 15 // * * * * * * * * * * * * * // Ravnina Z = 150 mm (0 0 150) // 16 (6.15 0 150) // 17 (18.85 0 150) // 18 (25 0 150) // 19 (25 1 150) // 20 (18.85 1 150) // 21 (6.15 1 150) // 22 (0 1 150) // 23 // * * * * * * * * * * * * * // ); blocks ( hex (0 1 6 7 8 9 14 15) (7 1 120) simpleGrading (1 1 1) // 00 hex (1 2 5 6 9 10 13 14) (13 1 120) simpleGrading (1 1 1) // 01 hex (2 3 4 5 10 11 12 13) (7 1 120) simpleGrading (1 1 1) // 02 hex (10 11 12 13 18 19 20 21) (7 1 30) simpleGrading (1 1 1) // 03 hex (8 9 14 15 16 17 22 23) (7 1 30) simpleGrading (1 1 1) // 04 ); edges ( ); boundary ( /* Stene posode */ leftWall // Stena - Levo { type wall; faces ( (0 7 15 8) /* Spodaj */ (8 15 23 16) /* Zgoraj */ ); } rightWall // Stena - Desno { type wall; faces ( (3 4 12 11) /* Spodaj */ (11 12 20 19) /* Zgoraj */ ); } bottomWall // Dno { type wall; faces ( (0 1 6 7) /* Levo */ (1 2 5 6) /* Sredina */ (2 3 4 5) /* Desno */ ); } /* Vrhnja ploskev (gl. vode) */ lidIOLeft { type patch; faces ( (16 17 22 23) /* Levo */ ); } lidIORight { type patch; faces ( (18 19 20 21) /* Desno */ ); } /* Sonotroda */ cavHornFace // Celna ploskev { type wall; faces ( (9 10 13 14) ); } cavHornWallLeft // Stena - Levo { type wall; faces ( (9 14 22 17) ); } cavHornWallRight // Stena - Desno { type wall; faces ( (10 13 21 18) ); } ); mergePatchPairs ( ); // ************************************************************************* // Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.3.0 | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; location "system"; object dynamicMeshDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // dynamicFvMesh solidBodyMotionFvMesh; motionSolverLibs ("libfvMotionSolvers.so"); solidBodyMotionFvMeshCoeffs { cellZone cavHornFace; solidBodyMotionFunction oscillatingLinearMotion; oscillatingLinearMotionCoeffs { amplitude (0 0 2); omega 12.56; // rad/s (.5 rps) } } // ************************************************************************* // I could be missing some additional case setup, but so far I'm out of ideas... Any help/suggestions would be very welcome. Miha |
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September 15, 2015, 21:47 |
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#2 |
Member
Nevada
Join Date: Apr 2014
Posts: 32
Rep Power: 12 |
Hi could you figure out how to put the wall as moving face? I'm stuck in same problem
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Tags |
boundary, condition, linear, oscillating, wall |
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