A vortex street around a cylinder. This can occur around cylinders and spheres, for any fluid, cylinder size and fluid speed, provided that the flow has a Reynolds number in the range ~40 to ~1000.

The animation below (courtesy of Cesareo de la Rosa Siqueira at the University of Sao Paulo, Brazil) shows how a von Karman vortex street develops behind a cylinder moving through a fluid

Flow past a sphere at 10,000 Reynolds number - YouTube

Flow past a sphere at 10,000 Reynolds number - YouTube

Laminar and Turbulent Fluid Flows & Reynolds Number

The characteristics of the flow whether it is laminar or turbulent is determined by a dimensionless parameter known as Reynold's number.

TransWorld SKATEboarding talks with Andrew Reynolds, Number 10 of 30 Most Influential Skaters – GrindTV: Source: GrindTV on YouTube…

TransWorld SKATEboarding talks with Andrew Reynolds, Number 10 of 30 Most Influential Skaters – GrindTV: Source: GrindTV on YouTube…

(8) High Reynolds Number flow over Circular Cylinder - YouTube

(8) High Reynolds Number flow over Circular Cylinder - YouTube

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

In fluid mechanics, the Reynolds number (Re) is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces for given flow conditions. The Reynolds number is an.

(8) Actual experiment of Horizontal jet, very high Reynolds number by Philip Roberts and Ozeair Abessi - YouTube

(8) Actual experiment of Horizontal jet, very high Reynolds number by Philip Roberts and Ozeair Abessi - YouTube

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

Theoretical transitions between flow patterns

Ryan Reynolds’ Hilariously Honest Tweets About His Daughter Are Even Better Than Deadpool #dadoftheyear

Ryan Reynolds’ Hilariously Honest Tweets About His Daughter Are Even Better Than Deadpool

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