Reynolds number visual. A vortex street around a cylinder--for any fluid, cylinder size and fluid speed, provided that there is a Reynolds number of between ~40 and 103.

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The plume from this candle flame goes from laminar to turbulent. The Reynolds number can be used to predict where this transition will take place.

fuckyeahfluiddynamics: A simple cylinder in a steady flow creates a beautiful wake pattern known as a von Karman vortex street. The image above shows several examples of this pattern. Flow is from bottom to top, and the Reynolds number is increasing from left to right. In the experiment, this increasing Reynolds number corresponds to increasing the flow velocity because the cylinder size, fluid, and temperature were all fixed. As the Reynolds number first increases, the cylinder begins to…

Evolution of a smoke trail behind a red cylinder (seen in cross-section, so it looks like a circle). At very rapid speeds (high Reynolds number), vortices break off turbulently, as seen here. This is a computer simulation done for my PhD thesis. - particle_person

The Reynolds number is near the critical value for the onset of von Karman vortex streets behind each comb tooth. One tooth has already formed a vortex street.

Photos of letters and numbers. Fun projects to make with these: Last Name Est. Year, Kids names, bold words to add to a picture collage

HCALC by Tahoe Design Software - HCALC solves for head loss, diameter, flow, pipe area, velocity, Reynolds number and friction factor using the Darcy-Weisbach, Hazen-Williams or Manning's equations. - #diameter #flow #velocity #pipe #civilengineering

At slightly higher Reynolds number each tooth is trailed by a vortex street, all of which eventually mingle further down stream.

### How Waterskiing Works

The physics of waterskiing depends on factors like the turbulence of water and the Reynolds number. Read more about water skiing physics.

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