CFD Online Logo CFD Online URL
Home > Forums > CFX

Weir Flow Separation

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

LinkBack Thread Tools Display Modes
Old   July 18, 2009, 01:08
Default Weir Flow Separation
New Member
Join Date: Jul 2009
Posts: 1
Rep Power: 0
buzzbromp is on a distinguished road
Hi all,

I am having trouble trying to get the flow to separate from the crest of a weir. I have tried many cases (homogeneous free surface, homogeneous mixture, inhomogeneous with water as the continous and air as the dispersed fluids), but the only way I have been able to obtain the nappe shape I expect is by putting an outlet near the area of negative pressure.

Does anyone have any suggestions on how to get the turbulent air entrainment for the separated flow? I imagine I need to be modelling an inhomogeneous free surface model.

buzzbromp is offline   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
Inviscid Drag at subsonic, subcritical Mach # Axel Rohde Main CFD Forum 1 November 19, 2001 13:19
CFD Modeling of Two-phase Flow in Small Dia.Tubes Eric Poindexter Main CFD Forum 2 September 22, 2000 09:21
mass flow inlet Denis Tschumperle FLUENT 7 August 9, 2000 02:19
Help: Poiseulle flow benchmariking Mohammad Kermani Main CFD Forum 1 November 12, 1999 17:15
Question on 3D potential flow Adrin Gharakhani Main CFD Forum 13 June 21, 1999 05:18

All times are GMT -4. The time now is 17:29.