CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

Issue in simulation of open channel flow with high viscosity fluid

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 20, 2015, 13:42
Post Issue in simulation of open channel flow with high viscosity fluid
  #1
New Member
 
Mohammadreza
Join Date: Jul 2015
Posts: 1
Rep Power: 0
soleymm1 is on a distinguished road
Hi ,

I am trying to simulate the flow of a high viscous fluid (about 1-10 Pa-s) in an open channel. I made the model and ran it for the case of water at first and the software was able to converge the simulation easily. However, by increasing the dynamic viscosity to the real value for my fluid which is about 1-10 Pa-s, it can not converge the model for some reason. Anyone had this problem before ? I really need to know what I can do for high viscous fluid simulation in open channels. Thanks a lot
soleymm1 is offline   Reply With Quote

Old   December 2, 2017, 10:41
Default
  #2
New Member
 
Join Date: Jan 2017
Posts: 4
Rep Power: 3
Jefferson2010 is on a distinguished road
I think this is because you are using an explicit scheme for time advancement.
You can try to use an implicit time scheme.
Jefferson2010 is offline   Reply With Quote

Old   December 3, 2017, 02:44
Default
  #3
Senior Member
 
Join Date: Nov 2010
Location: USA
Posts: 1,089
Rep Power: 18
me3840 is on a distinguished road
You have to give more information. How do you know it's not converging?
me3840 is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Issues on the simulation of high-speed compressible flow within turbomachinery dowlee OpenFOAM Running, Solving & CFD 8 October 25, 2016 20:48
Adding solvers from DensityBasedTurbo to foam-extend 3.0 Seroga OpenFOAM Installation 9 June 12, 2015 18:18
Open channel flow with submerged outlet Fonta Fluent Multiphase 0 September 30, 2013 09:04
[swak4Foam] build problem swak4Foam OF 2.2.0 mcathela OpenFOAM Community Contributions 14 April 23, 2013 14:59
Multicomponent fluid Andrea CFX 2 October 11, 2004 06:12


All times are GMT -4. The time now is 09:54.