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Navier-Stokes equation
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flow past a stationary solid sphere
flow past a stationary solid sphere Flow past a stationary solid sphere. As the velocity of the flow increases from A to B, vortices develop.

Navier-Stokes equation

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William L. Hosch
William L. Hosch was an editor at Encyclopædia Britannica.
William L. Hosch
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Navier-Stokes equation, in fluid mechanics, a partial differential equation that describes the flow of incompressible fluids. The equation is a generalization of the equation devised by Swiss mathematician Leonhard Euler in the 18th century to describe the flow of incompressible and frictionless fluids. In 1821 French engineer Claude-Louis Navier introduced the element of viscosity (friction) for the more realistic and vastly more difficult problem of viscous fluids. Throughout the middle of the 19th century, British physicist and mathematician Sir George Gabriel Stokes improved on this work, though complete solutions were obtained only for the case of simple two-dimensional flows. The ...(100 of 246 words)

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