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August 29, 2022, 05:33 |
meniscus in a capillary tube
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Hello.
I am simulating the injection of water in a capillary tube filled with air using interfoam solver and defined constant alpha contact angle of 150 on the walls; However, the meniscus is not acquiring the shape as it should. (It's only a line) The tube is 10 mm in length and 1 mm dia and discretized as (150 150 50) This is the boundary condition in alpha.water boundaryField { inlet { type inletOutlet; value uniform 1; inletValue uniform 1; } outlet { type zeroGradient; } walls1 { type constantAlphaContactAngle; theta0 30; limit gradient; value uniform 0; } Velocity: boundaryField { inlet { type fixedValue; value uniform (3.5 0 0);//fixed inlet velocity } outlet { type pressureInletOutletVelocity; value uniform (0 0 0); } walls1 { type noSlip; } Can anyone suggest if this is the right way to define the contact angle and if I am missing anything? The geometry is circular cylinder that I created using Salome, then imported as 3 stl. files. (inlet, outlet, walls) and used SnappyHexMesh later. The checkmesh did not give any error. Previously I worked with rectangular tube using blockmesh (as defined in the capillary rise tutorial) and this contact angle worked fine. |
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constantalphacontactangle, interfoam |
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