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In aviation, the Richardson number is used as a rough measure of expected air turbulence. A lower value indicates a higher degree of turbulence. A lower value indicates a higher degree of turbulence. Values in the range 10 to 0.1 are typical [ citation needed ] , with values below unity indicating significant turbulence.
The Bulk Richardson Number (BRN) is a dimensionless number relating vertical stability and vertical wind shear (generally, stability divided by shear). It represents the ratio of thermally-produced turbulence and turbulence generated by vertical shear. Practically, its value determines whether convection is free or forced.
Clear-air turbulence experienced ... Richardson's notion of turbulence was that a turbulent flow is composed by "eddies" of different sizes. ... Within this range ...
WHAT IS TURBULENCE? Turbulence or pockets of disturbed air can have many causes, most obviously the unstable weather patterns that trigger storms, according to an industry briefing by planemaker ...
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Generally, values in the range of around 10 to 50 suggest environmental conditions favorable for supercell development. [3] In the limit of layer thickness becoming small, the Bulk Richardson number approaches the Gradient Richardson number, for which a critical Richardson number is roughly Ri c = 0.25. Numbers less than this critical value are ...
Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.