CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

2D simulation of vortex shedder with rhoPimpleFoam

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

LinkBack Thread Tools Search this Thread Display Modes
Old   October 31, 2016, 10:00
Default 2D simulation of vortex shedder with rhoPimpleFoam
New Member
Andreas Linkamp
Join Date: Oct 2014
Location: Dortmund, Germany
Posts: 5
Rep Power: 10
linkamp is on a distinguished road
Hi everyone,

I'm trying to simulate a t-type shaped vortex shedder in a 2D "pipe" as used in a vortex flowmeter using rhoPimpleFoam. My basic problem is that I cannot get near the vortex shedding frequencies I obtained in experiment (factor 1.3 to 1.4). I tried everything I came up with.
I'm simulating RANS since I don't have the capacity (nor experience) for LES, not to mention DNS. I tried k-eps, k-omega, k-omega-SST. The vortex frequency is a bit different for each model, but for none of them it's near what I expected. I also tried using wall functions as well as resolving the boundary layer. Not that big difference. I carried out mesh refinement and higher temporal resolution, but even with the highest resolution (time and space) it doesn't really get "better".
Any idea what I do basically wrong? What irritates me is that there is some literature available, where vortex shedders are simulated in 2D using eddy viscosity models (mostly k-epsion) getting excellent agreement with experiments.

Last edited by linkamp; October 31, 2016 at 10:03. Reason: correction
linkamp is offline   Reply With Quote


rhopimpledymfoam, transient, vortex shedding

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
restarting paused transient simulation using reactingFoam JMDag2004 OpenFOAM Running, Solving & CFD 1 August 10, 2015 10:15
Openfoam Vortex and Whirlpool simulation qolt45 OpenFOAM Running, Solving & CFD 1 October 25, 2013 09:58
Boundary condition setting regarding turbine simulation using CFX Lacerlacer CFX 11 March 12, 2012 09:32
Flow simulation of vortex street behind a cylinder Ramnik Main CFD Forum 4 June 24, 2009 09:29
problem with vortex shedding simulation Le Stanc Main CFD Forum 6 November 1, 2006 13:08

All times are GMT -4. The time now is 16:12.