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This implicit isotropic damping function relaxes the velocity field towards a specified uniform value which can be set to (0 0 0) if no flow is required. This is particularly appropriate to damp the waves in a closed wave tank with no mean flow. Testing on the interFoam wave has shown that for this simple case with uniform mean flow the new isotropicDamping fvOption provides more rapid and complete damping than the original verticalDamping.
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
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