# 180 Degree Bend Duct Flow in FLUENT

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 July 25, 2012, 08:49 180 Degree Bend Duct Flow in FLUENT #1 Member   John Join Date: Jan 2011 Posts: 64 Rep Power: 8 Sponsored Links I'm simulating a 2D U-bend duct using FLUENT. Properties from experimental case are; U= 31.1m/s. Mach= 0.1. Operating Pressure= 12atm. Re=10^6. What are the boundary conditions at inlet and outlet?

 July 25, 2012, 09:10 #2 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,506 Rep Power: 25 If you don't know where and how the values were measured, I would try a velocity inlet with a bulk velocity of U and a pressure outlet at the operating pressure.

July 25, 2012, 09:11
#3
Member

John
Join Date: Jan 2011
Posts: 64
Rep Power: 8
Quote:
 Originally Posted by flotus1 If you don't know where and how the values were measured, I would try a velocity inlet with a bulk velocity of U and a pressure outlet at the operating pressure.

So you mean at inlet I should have 31.1 with 0 pressure, and at outlet 12atm operating pressure?

 July 25, 2012, 10:23 #4 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,506 Rep Power: 25 As far as I know you do not need to specify a value for pressure at a velocity inlet. The pressure at the inlet will be a result of your simulation.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post enriccasas FLUENT 1 August 21, 2013 06:43 Ankur Navra FLUENT 3 July 26, 2013 05:56 avi@lpsc CFX 6 April 17, 2012 01:22 opehterinar81 FLUENT 0 August 19, 2011 11:55 rajesh kumar tippabhotla FLUENT 2 October 7, 2004 12:04