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

problem with Transient Thermal Ansys

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 11, 2011, 15:49
Default problem with Transient Thermal Ansys
  #1
New Member
 
simone
Join Date: Jan 2011
Posts: 5
Rep Power: 15
simox 2 is on a distinguished road
Hello everyone,
I put my problem to the attention there.
Do I have a 2-D modeling of the freezing of the soil by liquid nitrogen with Ansys v12.
created the model with 2D AutoCAD and exported as a file. "sat" I've imported into Ansys DesignModeler as 2D drawing.
Then, open Mechanical, has verified that the connections were correct (delete some that the program had created automatically, but that did not exist) I went to set the parameters for analysis by setting the initial temperature of the soil and temperature, constant of -196 ° C of the cryogenic fluid.
carried out the analysis I find a "Maximum Temperature" which exceeds the initial temperature of the soil (12 ° C) with values that grow just over 12 ° C before returning to 12 ° C.
This is clearly insignificant!
Where is the error?
Thanks for the help.
P.S. I enclose also gives me errors:




*** WARNING *** CP = 5.117 TIME= 19:33:29
Element shape checking is currently inactive. Issue SHPP,ON or
SHPP,WARN to reactivate, if desired.

*** WARNING *** CP = 5.616 TIME= 19:33:30
Material number 123 (used by element 22298 ) should normally have at
least one MP or one TB type command associated with it. Output of
energy by material may not be available.

*** WARNING *** CP = 11.310 TIME= 19:33:35
The closed gap/penetration may be too large. Increase pinball if it is
a true closed gap/penetration. Decrease pinball if it is a false one.

*** WARNING *** CP = 11.310 TIME= 19:33:35
The initial penetration/gap is relatively large. Bonded/no separation
option may cause an accuracy issue. Switch to MPC algorithm or you
may use the CNCHECK,ADJUST command to move the contact nodes towards
the target surface.
simox 2 is offline   Reply With Quote

Reply

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
Problem with modelling contact in ansys fluent 12.1 mak86 FLUENT 16 August 27, 2019 10:07
Ansys 12 Workbench problem when generating volume mesh Sveink ANSYS 5 January 6, 2010 04:17
Problem importing GAMBIT mesh to Ansys geometry David G. CFX 0 June 19, 2005 07:01
problem in import ANSYS mesh sheryl CFX 2 April 30, 2005 22:30
transient problem carno Siemens 7 January 16, 2004 14:46


All times are GMT -4. The time now is 10:53.