Fluid Mechanics - Cool Science Experiment

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fluid dynamics
Flow Past a cylinder


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[toitoine519]

the song is from chopin :

mazurka opus 68, number 2

[6sixpounder6]

karman vortex shedding, i just did an AE lab on this in a wind tunnel. the vortices can develop a forcing function for the vibration of a wing.

[doubleja]

"Before I die, I hope that someone will explain quantum mechanics to me. After I die, I hope that God will explain turbulence to me." - Werner Heisenberg

"the most important unsolved problem of classical physics." - Richard Feynman

[shotenzenjin16]

@Landotter1 think of the time and space as a fluid and help unlock unlimited abundance re:"zero point energy" love,peace and enlightenment to all...good night and good luck.

[basestudent]

elegance



[Landotter1]

OK, so the tracer (smoke or steam) has a certain density so it takes a certain frequency to form these shapes just right? Does the "wind" need to be a certain speed too? where, exactly, does the smoke come from in this example? The reason I ask is I see this in nature, storms and high clouds, a lot and wonder how they form. It's very interesting and beautiful.

[Selur91]

Beautiful.

[Steipp]

The relevant dimensionless number in this case is the Strouhal number (fD/V), you will obviously know the velocity of the moving fluid, the diameter of the cylinder, and the frequency of the vortices can be easily estimated, therefore you can calculate the Strouhal Number which is useful for scale - model testing, or in otherwords designing against these types of vibrations which can lead to both fatigue damage and noise (at suitable frequencies).

[xlovenuggetx]

@dfl6921 shazam it.

[MyFashion0880]

ок

[halomage123]

trippy...

[talho578]

boring! i need something i can win sci fair with