CFD Online URL
[Sponsors]
Home > Forums > FLUENT

the error about boundary and turbulence

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 2, 2004, 07:28
Default the error about boundary and turbulence
  #1
Gali
Guest
 
Posts: n/a
Hi all

My system is two phase mixing. One phase is gas and other is liquid. There are two input and one output. A input is velocity_inlet for gas and other is mass_flow_inlet for liquid.

When I do initializing , some messages appear.

The first message:

turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 2130 cells

The second message:

Error:

FLUENT received fatal signal (ACCESS_VIOLATION)

1. Note exact events leading to error.

2. Save case/data under new name.

3. Exit program and restart to continue.

4. Report error to your distributor.

Error Object: ()

What do they mean and how to straighten out ?

I change the boundary condition of the liquid phase and mass_flow_inlet changes to velocity_inlet. The second error message is gone. But I just know the mass flux of the liquid with experiment.

What can I do ?

Thanks
  Reply With Quote

Old   December 3, 2004, 09:33
Default Re: the error about boundary and turbulence
  #2
Hongfw
Guest
 
Posts: n/a
About the first problem, you must reduce the value of the turbulence on the inlet boundary.

About the second problem, the direction of the inflow could not parallel with the inlet boundary. You try to chang the direction of the inflow, the problem would be settled.
  Reply With Quote

Old   December 9, 2004, 21:22
Default Re: the error about boundary and turbulence
  #3
chandra
Guest
 
Posts: n/a
may be u sould change the initial value before iterate, sometimes the value is unrealistic if u count from boundary.
  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
Wind turbine simulation Saturn CFX 34 October 16, 2014 06:27
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55
New topic on same subject - Flow around race car Tudor Miron CFX 15 April 2, 2004 06:18


All times are GMT -4. The time now is 12:41.