CFD Online Logo CFD Online URL
Home > Forums > FLOW-3D

water surface

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

Like Tree1Likes
  • 1 Post By JBurnham

LinkBack Thread Tools Display Modes
Old   January 9, 2012, 09:27
Default water surface
New Member
Join Date: Dec 2011
Posts: 10
Rep Power: 5
new anne is on a distinguished road
about modeling flow on spilways.when water flows it doesn't have a steady surface .in some places it seems like some small steps on face of the spillway.although i try very small ratio of meshinges,nothing happenes.i have no idea that what the solution is.could you plz help me.thanks.
new anne is offline   Reply With Quote

Old   January 13, 2012, 20:21
Senior Member
Jeff Burnham
Join Date: Apr 2010
Posts: 204
Rep Power: 8
JBurnham is on a distinguished road
It depends on how you're analyzing the output. 2-D output will show the calculated surface exactly as it was calculated. 3-D output uses an approximation to create an iso-surface, and the approximation means that 3-D plots do not show the free surface perfectly. I suspect the little steps you're seeing are related to that 3-D approximation. View the spillway in 2-D to check.
new anne likes this.
JBurnham 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
Spillway Analysis Fixed Water Surface Boundary Condition mgdenno OpenFOAM Running, Solving & CFD 13 April 7, 2014 10:58
[ICEM] surface mesh merging problem everest ANSYS Meshing & Geometry 39 June 5, 2013 19:02
Free Surface not exactly at mean water level FluidH CFX 6 March 21, 2011 02:55
Calculating forces on a non-closed surface ScottN FLUENT 0 March 1, 2011 18:18
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 16:10.