CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS

Ansys Polyflow

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 12, 2014, 06:33
Post Ansys Polyflow
  #1
New Member
 
Join Date: Jun 2014
Posts: 3
Rep Power: 9
Dansys is on a distinguished road
Hello every one

i am getting divergent error in ansys polyflow while trying to simulate white metzner model.

i have used polydata to fit the material properties. i have used three data tables viz. 1.viscosity vs. shear rate...2. frequency vs storage modulus....3. frequency vs loss modulus..
power law for viscosity is selected since i need variable viscosity values

my geometry is 2D axis symmetric.
boundary conditions used:::
1. inflow and outflow (volume flow rate) in the inlet and outlet
2. normal velocity and tangential force zero at the wall.(that means slip condition assumed)

i have used evolution scheme in relaxation time [ f(S)=S ].

but in getting divergent error in between the solution updating process.
view listing shows that divergent has occurred..
i have tried many times but getting different different errors related to divergent..\

please help me a little bit.
Dansys is offline   Reply With Quote

Old   December 23, 2015, 04:49
Default Divergence Error
  #2
New Member
 
Join Date: Dec 2015
Posts: 2
Rep Power: 0
sowntharya is on a distinguished road
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
sowntharya is offline   Reply With Quote

Old   February 4, 2016, 04:45
Default
  #3
New Member
 
wasisaleem
Join Date: Nov 2015
Posts: 17
Rep Power: 7
arqi is on a distinguished road
Use f(S)=1/S , may be it helps u.
arqi is offline   Reply With Quote

Old   June 20, 2021, 19:12
Default
  #4
New Member
 
Burhan Shuaib
Join Date: Jun 2021
Posts: 6
Rep Power: 2
Burhan Shuaib is on a distinguished road
Dear Sowntharya kindly send me the details of the material data file that you are using along with the Generalized Simulation model you are using. I might be able to help as I was facing the same errors before but have got rid of them now.
Burhan Shuaib is offline   Reply With Quote

Reply

Tags
ansys polyflow

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
polyflow error duton FLUENT 2 June 21, 2021 05:47
Pro/E to ANSYS Parameterization Guide Trues ANSYS 4 April 18, 2018 05:52
Running Ansys in BAtch Mode kuleuvenstudent ANSYS 1 October 18, 2017 12:11
Fluid structure interaction jnattia Main CFD Forum 25 May 21, 2015 09:16
Exporting results from CFX to ANSYS ?? sohail ahmed CFX 1 December 20, 2007 01:10


All times are GMT -4. The time now is 20:42.