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December 23, 2015, 05:05 |
ANSYS - polyflow divergence error
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#1 |
New Member
Join Date: Dec 2015
Posts: 2
Rep Power: 0 |
Hi all,
I have used Evolution task with simpified viscoelastic sub-task and bir-carreau law in polyflow solver for the analysis of rubber flow through a die in extrusion process. I am getting the following error in my simulation: Divergence detected for field CHI_DOT: iterations cancelled by Expert System Divergence detected for field VELOCITIES: iterations cancelled by Expert System Divergence detected for field COORDINATES: iterations cancelled by Expert System Divergence of influent solver occured ! *** WARNING *** from [EVOLUT] First step does not converge It is not possible to start the evolution scheme Anyone faced the same issue? Which evolution function is best for the above problem. Thanks and Regards |
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January 12, 2016, 20:46 |
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#2 |
New Member
wasisaleem
Join Date: Nov 2015
Posts: 17
Rep Power: 10 |
Use evolution on parameter n with f(S)=1/S if index is lower than 0.7.
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September 6, 2023, 03:39 |
Ansys polyflow convergence error
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#3 |
New Member
amaresh
Join Date: Sep 2023
Location: Kharagpur, India
Posts: 1
Rep Power: 0 |
Hi Everyone,
I finding convergence error during my simulation. I have used Phan Than Tanner model & applied evolution scheme on inflow volumetric flow rate. f(s)=s where, initial value of "s=inflow volumetric flow rate" step size of s = default value boundary conditions are as follows: inlet: inflow volumetric flow rate wall: no slip conditions axis of symmetry outlet: fn,ft imposed =0 Thanks and Regards |
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