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How do you calculate TAWSS, OSI, and RRT using ANSYS CFD-Post?

- October 21, 2022 at 11:27 am
  
  jjdapan
  Subscriber
  
  Hi! I am trying to evaluate the performance of a bypass graft using transient CFD via ANSYS Fluent. However, I cannot find a way on how to calculate and display time-averaged wall shear stress, oscillatory shear index, and relative residence time on the software? Can anyone help me? For reference, the image shows the formula for these three equations.
  Thank you!
- October 28, 2022 at 10:29 am
  
  V.P
  Ansys Employee
  
  Hi jjdapan,
  There is no direct options to display time averaged values.
  Either you can define a custom field function for the differenctial part and export this value per time step and manually calculate TAWSS and the rest. Or else use UDF, Named Expressions for the same.
- October 28, 2022 at 12:43 pm
  
  DrAmine
  Ansys Employee
  
  Best to do that in Fluent or CFX to prepare the transient data sampling for all what you require.

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