Reynolds number

British  

noun

1. a dimensionless number, v ρ l /η, where v is the fluid velocity, ρ the density, η the viscosity and l a dimension of the system. The value of the number indicates the type of fluid flow

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Etymology

Origin of Reynolds number

C19: named after Osborne Reynolds (1842–1912), British physicist

Example Sentences

See Examples For:

Reynolds number

The degree of laminar or turbulent flow is referred to as the Reynolds number, which is inversely proportional to the viscosity.

From Science Daily ● Jan. 30, 2024

In aerodynamics, the Reynolds number is a quantity that helps predict the flow pattern of fluids.

From Science Daily ● Jan. 26, 2024

However, the origins of the critical length scale, a crucial parameter in this method, and its dependence on the Reynolds number are not well understood.

From Science Daily ● Jan. 4, 2024

From the data above, calculate the Reynolds number for the air flow in the trachea during inhalation.

From Textbooks ● Aug. 12, 2015

Mastery of the Reynolds number, and using that knowledge to build wind tunnels that successfully simulated real-world conditions, was the key to the NACAs success.

From "Hidden Figures" by Margot Lee Shetterly