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18.104.22.168 Fluid Traction
In a fluid or fluid-FSI analysis, the Cauchy stress is given by , where is the elastic pressure and is the viscous stress. The traction on a fluid surface with outward normal is given by , where is the viscous component of the traction. The fluid traction surface load prescribes on a boundary surface.
<surface_load type="fluid traction" surface="surface1"> <scale lc="1">1.0</scale> <traction>0,0,1</traction> </surface_load>