[Noushin]

Hello
Can anyone help me on how can I calculate OSI,Ig factor, Area averaged wall shear and time averaged wall shear in Ansys fluent?


I'm doing my thesis on hemodynamic parameters on left coronary artery.


If more details is needed kindly ask me


Thank you

[Parham Vatankhah]

Dear Noushin,
Have you found out how to calculate OSI?
Cheers,
Parham

[Noushin]

Yes, I found a way.
Thanks.

[rootC]

Originally Posted by Noushin

Yes, I found a way.
Thanks.

Hi @Noushin , I am working on a similar FSI problem , and I want calculate TAWSS , OSI and RRT , I am currently calculating TAWSS in CFD post using expression ,and its working but can you help me with the expression of OSI ?
I am currently using this formula for OSI , let me know if its correct

OSI = 0.5*(1-((abs((Wall Shear X.Trnavg)+(Wall Shear Y.Trnavg)+(Wall Shear Z.Trnavg)))/((abs(Wall Shear X.Trnavg))+(abs(Wall Shear Y.Trnavg))+(abs( Wall Shear Z.Trnavg)))))


Warm regards

[Martin_Sz]

You can try to follow these steps below
https://howtooansys.blogspot.com/202...ctor-area.html

[Noushin]

The formula I used was, 0.5*(1-(sqrt(Wall Shear X.Trnavg^2+Wall Shear Y.Trnavg^2+Wall Shear Z.Trnavg^2)/Wall Shear.Trnavg )). I believe you can use this one, if do did not get your expected results using the other formula.