CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

flow in pipe with sphere suspended- choice of model

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 21, 2012, 15:35
Default flow in pipe with sphere suspended- choice of model
  #1
New Member
 
carl
Join Date: Nov 2012
Posts: 1
Rep Power: 0
brama is on a distinguished road
Hi

Im new to CFD modelling and have quite a wide problem to tackle. Ive got developing laminar (Re=1900) flow in a pipe and at its early stages it will go past a sphere- vortex loops should be shed behind it. I was thinking of transient- turbulent model, but I used it, and the vortices are not here (just symmetrical separation). Is it the pipe in which the flow occurs that changes it nature so much?

The thing is BL shape and thickness is crucial and I want to measure it before and after the stream hits the ball.

Also, I attach photo of residuals from one of my trials- what is the problem here?

cheers
carl

ps using star ccm+

Last edited by brama; November 21, 2012 at 19:17. Reason: improvements
brama is offline   Reply With Quote

Reply

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
How to model a pipe with obstructions in it amrbekhit ANSYS Meshing & Geometry 14 December 31, 2014 10:45
setup problems - LES pipe flow with cyclic BC (1) and direct mapped inlet (2) florian_krause OpenFOAM 22 June 13, 2013 21:25
Fluid-solid flow in pipe model...need help.. Fishburn Main CFD Forum 1 May 11, 2012 13:13
Pipe flow - orifice plates Alessandro P FLOW-3D 2 November 30, 2010 04:55
Two phase T-junction pipe flow Viscous model Kortels FLUENT 0 September 10, 2010 06:18


All times are GMT -4. The time now is 20:32.