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-   -   Shear stress induced on fluid in centrifugal pump (http://www.cfd-online.com/Forums/cfx/107891-shear-stress-induced-fluid-centrifugal-pump.html)

MechKim October 8, 2012 21:31

Shear stress induced on fluid in centrifugal pump
 
Hi,

Im completing a study on an artificial heart pump. I have completed a CFD model in CFX, however i am confused as to how to determine the shear stress induced on the blood. Predefined expressions gives Wall Shear Stress, but i dont think this is what i need.
Do i need to define my own expression? And does TauZY = viscosity * (dv/dz + dw/dy) be the correct expression for shear stress on the fluid?

Any insight much appreciated :)


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