How to calculate OSI and WSS?
 

I want to know how to calculate de oscillatory shear index and wall shear stress in openFoam??:mad:

any one? help me

Hi, you can simply type wallShearStress in terminal, best.

yes
The wss it'swork , but do you now how to caulculate de OSI?

Unfortunately not :(. But, I'm sure that there is not a keyword and you should do modification.

Greetings to all!

@nainasjdr: Oscillatory Shear Index isn't a very common index in the CFD world, at least not nearly as common as Wall Shear Stress. If you had taken this into account and had provided more details on what you were asking about, someone would likely had taken the time to give you an answer a long time ago :(.

I've done a quick search in Google with the following expression:
Among the results was this thread: http://www.cfd-online.com/Forums/cfx...tml#post500380 post #5 - in post #1 is the actual expression.
There you can find instructions on how to calculate the OSI. From the description on that post, this isn't available yet in OpenFOAM. It's also suggested that an outside tool is more easily used for the actual calculations.

Further instructions/suggestions can be provided, depending on how you want to proceed.

Best regards,
Bruno