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18.104.22.168 Fluid Tangential Stabilization
In a fluid or fluid-FSI analysis, this boundary condition prescribes the tangential component of the viscous traction (Section 22.214.171.124↑), , such that it opposes the tangential fluid flow on the selected boundary surface, with representing the outward normal to this surface. Specifically, , where is a unitless user-defined parameter (typical values may range from 0 to 1) and is the referential fluid density.
<surface_load type="fluid tangential stabilization" surface="surface1"> <beta lc="1">1</beta> </surface_load>