|August 12, 2012, 12:16||
Vortex shedding - circular cylinder
Join Date: Aug 2012
Posts: 3Rep Power: 4
I have to develop a numerical project as concerns the vortex shedding due to a circular cylider in a channel with water flowing. My professor compelled me to use the K-E model and told me not to use anu other model because it was the only one which was exposed during lessons.
I have set a problem 2D with Phoenics, the cylinder has a diameter of 0,06 m. It is in a channel whose dimensions are 3,00x1,00 m^2. in z axis i put 0,01m to be sure that the simulation was 2d. The cylinder is 1 metre far from the beginning.
The phenomenon reaches a stable situation at about 85000 seconds and i realize that it is quite strange.
I have to reproduce the result that I have found in litterature for Re=160, 200, 240, 270, 300. For this I have created a steady simulations and then a transient one restarting from the steady. In litterature it is said that the period goes from 70 to 150 seconds.
Anyway the period that i measure exporting the file forces-t.xls in MATLAB is 1500 seconds for the drag and 3000 for the lift.
It is really far from the litterature results.
Someone can help me?
Last edited by allaffa; August 13, 2012 at 11:41.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Cylinder vortex shedding (3D)||Apocolapse||STAR-CCM+||2||April 3, 2014 20:33|
|benchmark: flow over a circular cylinder||goodegg||Main CFD Forum||12||January 22, 2013 12:47|
|Desperate HELP please: Vortex Shedding not showing circular cylinder||u50mb9||FLUENT||6||May 1, 2012 18:23|
|Vortex Shedding Circular Cylinder||Ray Mahon||Main CFD Forum||1||March 15, 2002 00:38|
|LES: vortex shedding past a 2D and 3D circular cylinder||Rocchi Daniele||Main CFD Forum||7||April 9, 1999 12:05|