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

Problem in Result in bottom outlet

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

Like Tree1Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 8, 2017, 05:37
Default
  #41
New Member
 
Harish Suryawanshi
Join Date: Jul 2016
Posts: 4
Rep Power: 9
Harish##137 is on a distinguished road
Quote:
Originally Posted by ali92 View Post
Hello Glenn
thanks for your advice too.
I have read FAQ precisely. It is said:
If these parameters are not changing to an accuracy tolerance suitable for your simulation then your simulation is almost certainly OK as it is and no further work needs be done.
For 100 percent gate:
My important parameters(I mean air velocity in air vent(inlet2) and pressure in the beginning of my tunnel(inlet1)) sufficiently converged even though my specified criteria(1e-4) has not been met.
air velocity: 50m/s
water pressure: 1e6 pa
For 20 percent gate:
In this opening of gate with the same mesh (applied in 100 percent) I wonder why my pressure is so small.(6e5) Where as it should be 1.2e6.
In this opening my mass flow rate in inlet 1 is 34000kg/s. but in the 100 percent opening was 232000 kg/s.


how do you calculate loss coefficient for 20 % or 100 % opening?
Any help would be appreciated...

regards
Harish##137 is offline   Reply With Quote

Old   May 8, 2017, 07:23
Default
  #42
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,665
Rep Power: 143
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
20% or 100% opening of what?
ghorrocks is offline   Reply With Quote

Old   May 11, 2017, 07:01
Default
  #43
New Member
 
Harish Suryawanshi
Join Date: Jul 2016
Posts: 4
Rep Power: 9
Harish##137 is on a distinguished road
Quote:
Originally Posted by ghorrocks View Post
20% or 100% opening of what?
20% or 100% opening of outlet Vent wall area
Harish##137 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
outlet problem FabOr OpenFOAM 0 May 28, 2010 09:19
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 16:45
problem of without inlet and outlet dwarika nath rath Phoenics 2 March 11, 2004 18:10
TASCflow simulation result problem? Mason CFX 0 February 22, 2004 08:54
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 16:50.