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HVN May 29, 2001 03:23

Implementation of Bingham rheology
 
Hello,

Does anybody know how to implemente a Bingham rheology law in a finite volume software ?

Actually, I try to implemente that trough the apparent viscosity.

HV

Anthony Wachs May 29, 2001 09:56

Re: Implementation of Bingham rheology
 
Hi,

I have implemented Bingham rheology in Fluent5 with great success. According to me, "through the apparent viscosity" is the easiest (but definitively efficient) way to account this kind of constitutive equation in non-newtonian flows.

I am using a regularization law too in order to make the constitutive equation continuous (an exponential model from Papanastasiou). Thus, you can calculate the stress (or the apparent viscosity) even in zones where the stresses are smaller then the yield stress (that is to say where the shear strain is close to zero).

It gives very satisfactory results!!

Anthony

HVN June 7, 2001 05:20

Re: Implementation of Bingham rheology
 
Hello, Anthony

Thank you for your answer. The Papanastasiou approximation works very well.

HV

bagherij July 9, 2015 20:38

Quote:

Originally Posted by Anthony Wachs
;15017
Hi,

I have implemented Bingham rheology in Fluent5 with great success. According to me, "through the apparent viscosity" is the easiest (but definitively efficient) way to account this kind of constitutive equation in non-newtonian flows.

I am using a regularization law too in order to make the constitutive equation continuous (an exponential model from Papanastasiou). Thus, you can calculate the stress (or the apparent viscosity) even in zones where the stresses are smaller then the yield stress (that is to say where the shear strain is close to zero).

It gives very satisfactory results!!


Anthony

Dear
i need to your impelimentation, i want to simulate creeping flow aroound cylinder.
Thanks


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