Herschel Bulkley model Problem
I am attempting to simulate the laminar flow of a Herschel Bulkley fluid. One of the inputs required is the 'yielding viscosity' I am not sure what the value for this should be. I have checked the documentation but it is still unclear. I have values for n, k and Tau_0, which are commonly determined, however, I cannot find any information on 'yielding viscosity' Can anyone help?
Many thanks for help me
If you use the herschel-bulkley model for the bingham plastic..
find this thesis, " CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant "
I'm also modeling the bingham, laminar..
you just give the yield viscosity very large value..
First, Many Thanks for reply, I don't have this thesis if you have please send me.
Please, I check length for fully developed laminer flow in rectangular duct and if draw the velocity with centerline appear not good if i used yield viscosity very large value.
please, Can you send me all information about parameters for Herschel bulkley model.
Hi My name Jonathan and am also attempting to use the Herschel Bulkley model in fluent, The thesis recomended can be found online, just google the name.
I was just wondering how you found the other properties recquired for the herschel bulkley model such as:
consistancy index and the power-law index
Iam very sorry and Many thanks for reply. I know for get this thesis by using google engine but i live in Iraq and this my conutry I don't get Master card to get that thesis. I am very Thanks to help me for get this thesis.
Many thanks against
Herschel Bulkley - pressure problem
I'm trying to simulate a laminar flow using Herschel Bulkley and "non-Newtonian solver."
I adopted nu0 = 1E6, tau0 = 1, k = 0.01 and n = 1 to verify the result gives the analytical value of a Bingham material.
The problem is that pressure is fluctuating too much, although the velocity gain a suitable profile.
Someone please have an idea what might be happening and how to fix this problem.
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