CFD Online Discussion Forums - blood simulation

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blood simulation - simpleFoam

Hi friends!

I would simulate a non-newtonian case (blood). I choose the solver simpleFoam for it. Then I found out I can simulate newtonian and Non-Newtonian fluids with simpleFoam. For it, just have to specify which turbulence model to use in constant/turbulentProperties file.

About This, I have some questions:

(IF YOU KNOW ANSWER JUST ONE QUESTION BELOW, PLEASE, I WILL APRECIATE SEE YOUR COMMENTARY!)

1- The simpleFoam is the best choice (it's a vein geometry)?;

2- about specifying of turbulence model in simpleFoam (in constant/turbulentProperties file), I saw this list of options in the user guide. Is this the COMPLETE and CORRECT list of options?

HTML Code:

Transport models for incompressible fluids — incompressibleTransportModels



        Newtonian >>>>Linear viscous fluid model;

        CrossPowerLaw>>>>>Cross Power law nonlinear viscous model;

        BirdCarreau>>>>>Bird-Carreau nonlinear viscous model;

        HerschelBulkley>>>>>Herschel-Bulkley nonlinear viscous model;

        powerLaw>>>>>Power-law nonlinear viscous model;

        interfaceProperties>>>>>Models for the interface, e.g. contact angle, in multiphase simulations.



Table 3.10: Shared object libraries of transport models.

3 - The Non-Newtonian BirdCarreau option (above) is the Carreau – Yasuda model? .. I'm looking for this model...

(I'm a begginer)
THANKS FOR ATENTION FRIENDS!!!

Hi,

Quote:

Originally Posted by vitorspadeto (Post 497866)

I would simulate a non-newtonian case (blood). I choose the solver simpleFoam for it. Then I found out I can simulate newtonian and Non-Newtonian fluids with simpleFoam. For it, just have to specify which turbulence model to use in constant/turbulentProperties file.

It's constant/transportProperties file.

Quote:

1- The simpleFoam is the best choice (it's a vein geometry)?;

It's depends on the result you'd like to get. simpleFoam is a solver for steady state problems. If you'd like to analyze time evolution, you should go with pimpleFoam.

Quote:

3 - The Non-Newtonian BirdCarreau option (above) is the Carreau – Yasuda model? .. I'm looking for this model...

Code:

$ cd $FOAM_SRC/transportModels/incompressible/viscosityModels

$ ls -1

BirdCarreau

CrossPowerLaw

HerschelBulkley

Newtonian

powerLaw

viscosityModel

$ head -35 BirdCarreau/BirdCarreau.H

...

Description

    An incompressible Bird-Carreau non-Newtonian viscosity model.



    The Bird-Carreau-Yasuda form is also supported if the optional "a"

    coefficient is specified.  "a" defaults to 2 for the Bird-Carreau model.