CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

valve forces

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

LinkBack Thread Tools Search this Thread Display Modes
Old   November 3, 2000, 06:36
Default valve forces
Posts: n/a
Hello everyone,

I am interested in using Fluent to simulate a valve under steady state conditions to predict the forces. The valves are fairly small (approx 9mm diameter inner shaft).

This is a problem which has been tackled previously by people who are no longer available (and unfortunately nor are their simulations). All I know is that their results did not tie up with the experiemental data. Actually I think they got close with pressure drop but the forces were way off.

What I want to know is this - is it reasonable to expect to be able to use Fluent to predict the forces accurately (within 10%) or would I just be wasting my time? And what complications would I be likely to encounter?

Regards Althea
  Reply With Quote

Old   November 3, 2000, 09:53
Default Re: valve forces
John C. Chien
Posts: n/a
(1). Your question is fairly common, and I also have the same questions. But I don't have the answer. (2). It is a good idea to talk to support engineers to get their professional opinion. (the pressure is easier to obtain. if not, the flow field and mass conservation will be bad. to get good prediction of total force, both the local pressure and the viscous drag must be very accurate. )
  Reply With Quote

Old   November 4, 2000, 18:26
Default Re: valve forces
Alton Reich
Posts: n/a

I have recently completed some similar work for a friend of mine who is a valve design engineer. The valves were much larger, but the results were good. The calculated flow rates were good, and the computed forces were used to design a spring essential to valve operation.

If you'd like some more information, let me know (I'll be away from the office this week at an ASME meeting, so it'll be a few days before I respond to you.)

Regards, Alton
  Reply With Quote


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
Reading forces from previous time step within solver SD@TUB OpenFOAM Programming & Development 2 August 19, 2020 20:35
how to get forces on Iso-Clip Surfaces and How to get forces in cylindrical coordinat CFD XUE FLUENT 3 March 18, 2015 04:28
FORCES don't run! C12Carbon OpenFOAM 0 September 10, 2011 08:34
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11
Valve Forces in CFdesign Mike Clapp Main CFD Forum 3 March 8, 2001 15:09

All times are GMT -4. The time now is 15:41.