Insert Point Vortex into OF unsteady Simulation

Jack001 · July 16, 2015, 12:31

Hi all!

I have an unsteady simulation (pisoFoam with Smagorinsky LES Model), that I have run with satisfaction. I know want to introduce a vorticity distribution into my flow and collect some measurements. To start with I want to introduce a Oseen Vortex,

HTML Code:

https://en.wikipedia.org/wiki/Lamb–Oseen_vortex

as a model of a simple "point vortex" at a particular location in my already solved flow. In essence at my next time step it would just 'appear' in the flow at the prescribed position and then I would continue solving. How do I do this?

ssss · July 16, 2015, 17:01

Use funkySetFields to set the initial velocity field

pbachant · October 9, 2015, 20:00

Hey Jack,

If you ever get this running, let me know. I am looking to create a Lamb vortex to model interaction with an airfoil.

Thanks!

Jack001 · August 14, 2016, 08:28

Hi

I have made several attempts on this. Have you had any success? Is there any reason to use a lamb vortex model rather than a simple v = gamma/(2*pi*r) model?

Thanks!

July 16, 2015, 12:31	Insert Point Vortex into OF unsteady Simulation	#1
Jack001 Member Jack Join Date: May 2015 Posts: 98 Rep Power: 10	Hi all! I have an unsteady simulation (pisoFoam with Smagorinsky LES Model), that I have run with satisfaction. I know want to introduce a vorticity distribution into my flow and collect some measurements. To start with I want to introduce a Oseen Vortex, HTML Code: https://en.wikipedia.org/wiki/Lamb–Oseen_vortex as a model of a simple "point vortex" at a particular location in my already solved flow. In essence at my next time step it would just 'appear' in the flow at the prescribed position and then I would continue solving. How do I do this?

October 9, 2015, 20:00		#3
pbachant Senior Member Pete Bachant Join Date: Jun 2012 Location: Boston, MA Posts: 173 Rep Power: 13	Hey Jack, If you ever get this running, let me know. I am looking to create a Lamb vortex to model interaction with an airfoil. Thanks! __________________ Home \| Twitter \| GitHub

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July 16, 2015, 17:01		#2
ssss Senior Member anonymous Join Date: Aug 2014 Posts: 205 Rep Power: 12	Use funkySetFields to set the initial velocity field

August 14, 2016, 08:28		#4
Jack001 Member Jack Join Date: May 2015 Posts: 98 Rep Power: 10	Hi I have made several attempts on this. Have you had any success? Is there any reason to use a lamb vortex model rather than a simple v = gamma/(2pir) model? Thanks!