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.

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.

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.

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Laminar and turbulent flow in the wake behind cylinders with different Reynolds numbers.

Laminar and turbulent flow in the wake behind cylinders with different Reynolds numbers.

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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.

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.

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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

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

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Aerodynamics: Airfoil Camber, Flaps, Slots-Slats & Drag: "Smoke Lifts" circa 1938 NACA Langley - YouTube

Aerodynamics: Airfoil Camber, Flaps, Slots-Slats & Drag: "Smoke Lifts" circa 1938 NACA Langley - YouTube

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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

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

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