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Implementation of Bingham rheology

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Old   May 29, 2001, 03:23
Default Implementation of Bingham rheology
  #1
HVN
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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
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Old   May 29, 2001, 09:56
Default Re: Implementation of Bingham rheology
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Anthony Wachs
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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
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Old   June 7, 2001, 05:20
Default Re: Implementation of Bingham rheology
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HVN
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Hello, Anthony

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

HV
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Old   July 9, 2015, 20:38
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jafar
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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
bagherij is offline   Reply With Quote

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