CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Velocity field not divergence-free for incompressible flow

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

LinkBack Thread Tools Display Modes
Old   May 18, 2016, 06:15
Default Velocity field not divergence-free for incompressible flow
New Member
Vyacheslav Korchagin
Join Date: May 2016
Posts: 1
Rep Power: 0
vkrwth is on a distinguished road
I am running a steady simulation in fluent for 3D incompressible flow (air with constant density) in a duct with obstacles using
  • RANS k-omega SST
  • Pressure velocity coupling - PISO
  • Gradient - Least Square Cell
  • Pressure - standard
  • Momentum, TKE, SDR - First Order Upwind

The solution is converged with the Residual for continuty 1e-06, velocities 2e-09.

But when I check the velocity field for divergence-free in paraview (dU/dx+dV/dy+dW/dz). I see that this condition is not satisfied and the values are far from zero near the obstacales in the flow giving sinks and sources. I am wondering if there is a way to impose a divergence-free conditon in fluent?
vkrwth is offline   Reply With Quote


fluent 14.5, incompressible flow, velocity divergence

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
PISO predictor-corrector scheme for non-divergence free velocity blais.bruno OpenFOAM Programming & Development 0 April 23, 2014 12:03
change velocity field LM4112 OpenFOAM Running, Solving & CFD 12 February 5, 2014 12:56
Incompressible Flow: Retrieving Pressure from Velocity Field lordvon Main CFD Forum 9 July 6, 2013 11:24
velocity of massless particles and velocity of flow field in same coordinate payam_IUST FLUENT 0 October 18, 2009 23:24
Flow field measurement in turbomachinery! Wanlai Lin Main CFD Forum 3 September 3, 1999 12:06

All times are GMT -4. The time now is 09:52.