New Viscosity model in DriftFluxFoam

yang.l · November 28, 2017, 05:49

Hello,

i am trying to run DriftFluxFoam with new Viscosity model like PowerLaw. There are only 3 model in DriftFluxFoam, and they both use the dynamic viscosity mu.
For the new Viscosity model PowerLaw, kinematic viscoty nu is used. They are different. Can anyone tell me , how to implent this new model.

Thx

decah · December 2, 2017, 07:31

Hi Yang

You can convert dynamic to kinematic viscosity using $\mu$ = $\rho\nu$

There's a good tutorial from Chalmers about implementing a non-Newtonian viscosity model here.

I myself created a Hershel-Bulkley viscosity model which I can send you if you're interested.

Declan

yang.l · December 2, 2017, 07:56

hello Declan,

thanks for your reply! I'll try it with this tutorial.

Herschel-Bulkey is also what i need, pls send me . My Email is brady9097@gmail.com

THX again
Yang

November 28, 2017, 05:49	New Viscosity model in DriftFluxFoam	#1
yang.l New Member Join Date: Aug 2017 Posts: 5 Rep Power: 9	Hello, i am trying to run DriftFluxFoam with new Viscosity model like PowerLaw. There are only 3 model in DriftFluxFoam, and they both use the dynamic viscosity mu. For the new Viscosity model PowerLaw, kinematic viscoty nu is used. They are different. Can anyone tell me , how to implent this new model. Thx

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December 2, 2017, 07:31		#2
decah Member Declan Join Date: Oct 2016 Location: Ireland Posts: 40 Rep Power: 10	Hi Yang You can convert dynamic to kinematic viscosity using $\mu$ = $\rho\nu$ There's a good tutorial from Chalmers about implementing a non-Newtonian viscosity model here. I myself created a Hershel-Bulkley viscosity model which I can send you if you're interested. Declan

December 2, 2017, 07:56		#3
yang.l New Member Join Date: Aug 2017 Posts: 5 Rep Power: 9	hello Declan, thanks for your reply! I'll try it with this tutorial. Herschel-Bulkey is also what i need, pls send me . My Email is brady9097@gmail.com THX again Yang