how do i calculate shear rate
I know this is kinda a starcd specific question but how would i calculate shear rate (gamma dot) from variables output from a simulation. I dont mean the specifics within the program more a general formula

Re: how do i calculate shear rate
in starcd you can use 'operate'command or 'posdat' subroutine. if you want manipulate computational result outside you need write your own program to deal with the output from starcd. i guess there must be countparts in other cfd package. i am not sure that will help.

Re: how do i calculate shear rate
cheers, i know about the operate i was going to use that to get around having to use a subroutine, my question is what do i have to operate to get shear rate, i.e. shear rate =......

Re: how do i calculate shear rate
as i know for turbulent flow only the layer next to wall shear rate concept makes sense as long as we chose wall function. shear rate = vmag(p) / distance from wal. for laminar flow, general form shear rate should be part of strain tensor that can throughout domain.

Re: how do i calculate shear rate
yeah im using laminar nonnewtonian flow, hence the need for gamma dot

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