Von Karman Street Vortex Suppression Study

My Postgraduate thesis was to analyse using CFD (Star-CCM+) ways in which the Von Karman Street vortex and subsequent oscillations of the cylinder can be suppressed.
All simulations conducted at Reynolds number = 100
All geometries meshed in ICEM.
Motion is enabled by use of the DFBI tool within Star-CCM+ and use of an overset mesh to represent the moving cylinder.
Mass ratio = 3.3 for all VIV cases, a linear spring is also coupled to the cylinder and the surrounding environment with an effective stiffness of 2.42 (see Shiels et al. (2001))

[@nihonyoung379]

This is very nice. In real world, you see truck platooning on highways. It will be interesting to see 2 or 3 blocks/ bluffs simulation, just like see 2 or 3 truck on highways!

[@user-rh7ss6ce9c]

Could you please give a tutorial of your simulation? Thank you very much.

[@TheRojo387]

In my case I don't necessarily want to surpress ALL vortex shedding; just that of one chirality.

[@ilmawanyanuarsyah7774]

Hi. i want to ask how did you take the animation of this simulation? my thesis also this kind of thing. a help from you would be really nice. thanks :)

[@olliewest]

Ilmawan Yanuarsyah I can't remember exactly as this was over a year ago, but if you follow the Von Karman street vortex shedding tutorial within Star-CCM+ it explains it quite well.

[@Skval2254]

If i see this i understand more about how many fish are using the same technics for swiming. Their energy is far less then we use to put a boat in a moving direction. Wat is you use this principe to power a boat.

[@ReggieTheWonderDog]

Could I use your animation in an article I am writing on Karman Vortices with appropriate credits ??

[@olliewest]

Tom Niziol Hi Tom, of course. Would you kindly post the link to your article in the comment section please?

[@ReggieTheWonderDog]

@@olliewest Sorry, I had to go to publication so we chose another animation and were able to credit it in the article. If you still want the link to the article, just let me know.

[@hakim.mkacher]

Thank you for uploading this animation. What do you mean please by mass ratio?

[@olliewest]

Hi, mass ratio = mass/(rho*pi*L*(D^2/4)). If you look at the paper, I keep it fixed to 3.3 to validate to other research
www.researchgate.net/publication/281557371_Vortex-Induced_Vibration_Suppression_on_a_Oscillatory_Cylinder

[@cristianothomaz1648]

A lua é translúcida

[@punkisinthedetails1470]

does the Reynolds no. not vary throughput the domain. Where is 100Re ?

[@olliewest]

PUNKISINTHEDETAILS Re will vary throughout the domain depending on how you measure it. 100Re is from the inlet velocity, the constant viscosity and the diameter of the cylinder.

[@punkisinthedetails1470]

@@olliewest thanks Ollie. That makes sense now. So you tune the vel to the inlet dia to meet the desired Re correct?

[@olliewest]

PUNKISINTHEDETAILS yes, or with the kinematic viscosity

[@user-xl3zi8bh3w]

Hello,can I ask you something about this, I am so confused about the VIV simulation with the STAR-CCM

[@olliewest]

Hello, I can try to answer but it was 5 years ago when I made this

[@user-xl3zi8bh3w]

@@olliewest Thank you for reply me,l am a beginner of the STAR-CCM,Can I get your contact information for my question

[@user-xl3zi8bh3w]

@@olliewest but what you do is really wonderful

[@user-xl3zi8bh3w]

@@olliewest hhhh ,it’s a great job

[@olliewest]

@@user-xl3zi8bh3w thank you, but I do not give out my contact information. Please post the question on here so if others have the same, they can see the answer

[@subhlitu]

What is its practical application???

[@olliewest]

Subhasis Rath passing my MSc was pretty practical

[@teguhhadyariwibowo5606]

vortex induced vibration electricity generator czcams.com/video/hiP-2iEYa9E/video.html

[@emrezkc]

resulta may be tied to your systems natural frequency

[@structurelearninghub3340]

Which software is this?

[@olliewest]

Star-CCM