CFD Online Logo CFD Online URL
Home > Forums > FLUENT

need help about boundary condition

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

LinkBack Thread Tools Display Modes
Old   February 23, 2006, 08:55
Default need help about boundary condition
Posts: n/a
In my model water is passing through the pipe at a constant flow. My aim is to increase pressure at the outlet by squeezing area close to the outlet of the pipe and also find the pressure at that squeezing point. For this problem I know only pressure and velocity at the inlet. It will be great for me if somebody can suggest me what kind of boundary condition can help me to get the pressure at point(since in pressure outlet boundary condition I need to know pressure at outlet which I don't know). I also would like to know how I can be able to know the exact squeezing area from fluent. Thanks in advance for your cooperation.

Regards, Arif Engineering student (DCU)

  Reply With Quote

Old   February 23, 2006, 09:11
Default Re: need help about boundary condition
Posts: n/a
Hi, If you work only with velocity inlet, and a pressure outlet with 0 Pa. Fluent will give you the pressure drop, by adjusting the pressure at inlet. If the pressure computed doesn't match your value, then you have to make an offset (operating_pressure = your value - fluent's one). Regarding your squeezing area, I understand moving mesh, like a variable nozzle, in fluent you can create a interior section, where you want (using Sweep Face), and then report the pressure on this section (report / average weighted area), and report also the area (report / surface area) Hope it helps
  Reply With Quote


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
Domain Imbalance HMR CFX 5 October 10, 2016 05:57
Boundary Conditions Thomas P. Abraham Main CFD Forum 20 July 7, 2013 05:05
Setting outlet Pressure boundary condition using CAFFA code Mukund Pondkule Main CFD Forum 0 March 16, 2011 04:23
How exactly the "pressure outlet" bdry condition compute properties on the boundary? yating9901 FLUENT 3 June 28, 2010 12:26
How to set boundary condition in Fluent for the fo Peiyong FLUENT 1 November 10, 2006 12:44

All times are GMT -4. The time now is 08:33.