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

Floating Point Segregated Flow Solver Error

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 6, 2018, 15:11
Default Floating Point Segregated Flow Solver Error
  #1
New Member
 
Join Date: Jan 2018
Posts: 1
Rep Power: 0
bonztee is on a distinguished road
Hi
I have set up a rotational and translational body using RANS k-Epsilon. However when I start running the simulation I immediately get the following error:
A floating point exception has occurred: floating point exception [invalid operation]. The specific cause cannot be identified.
Context: star.segregatedflow.SegregatedFlowSolver
What should I look at changing?
Thanks.
bonztee is offline   Reply With Quote

Old   January 8, 2018, 08:44
Smile
  #2
Senior Member
 
ashokac7's Avatar
 
Ashok Chaudhari
Join Date: Aug 2016
Location: Pune, India
Posts: 260
Rep Power: 9
ashokac7 is on a distinguished road
Send a message via Skype™ to ashokac7
You can start with reducing URF for the solvers. But if there is problem with mesh or solver set up then reducing URF will not work. So it is good practice to first check mesh, solver etc. Otherwise state detail problem and set up etc to comment more
ashokac7 is offline   Reply With Quote

Old   March 7, 2018, 02:55
Default
  #3
New Member
 
Join Date: Jul 2017
Posts: 15
Rep Power: 7
patilsachin is on a distinguished road
Quote:
Originally Posted by ashokac7 View Post
You can start with reducing URF for the solvers. But if there is problem with mesh or solver set up then reducing URF will not work. So it is good practice to first check mesh, solver etc. Otherwise state detail problem and set up etc to comment more
This answer actually helped in another problem that I was working on with Segregated Energy Solver.

Reducing the URF did the trick
patilsachin is offline   Reply With Quote

Old   March 7, 2018, 20:52
Default
  #4
Member
 
Steve
Join Date: Mar 2018
Location: South Korea
Posts: 69
Rep Power: 6
steve lee is on a distinguished road
Hello.
You should check these things..

1. Mesh
2. Initial condition

if you can not find any problem #1 and #2, you should control URF.

still you find the same problem..

You should control B.C..
for example.. your problem has 100 bar pressure difference between in and out..
you set the pressure difference like 5 bar.. and after few steps.. 10 bar.. like this.
steve lee is offline   Reply With Quote

Reply

Tags
error, floating point error, segregated flow

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
Building OpenFOAM1.7.0 from source ata OpenFOAM Installation 46 March 6, 2022 13:21
[blockMesh] blockMesh with double grading. spwater OpenFOAM Meshing & Mesh Conversion 92 January 12, 2019 09:00
Floating Point Exception Error nyox FLUENT 11 November 30, 2018 12:31
Errors in UDF shashank312 Fluent UDF and Scheme Programming 6 May 30, 2013 20:30
Ansys Fluent 13.0 UDF compilation problem in Window XP (32 bit) Yogini Fluent UDF and Scheme Programming 7 October 3, 2012 07:24


All times are GMT -4. The time now is 06:24.