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The Reynolds number is the ratio of inertial forces to viscous forces within a fluid that is subjected to relative internal movement due to different fluid velocities. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
Elizabeth Noyes Hand (October 11, 1912 – December 24, 1987) was an American singer and actress best known for dubbing two of Debbie Reynolds' numbers in the 1952 film Singin' in the Rain. Today, this is a well-known example of dubbing in a film musical : While Reynolds's character was the " ghost singer " dubbing for another character in the ...
The Reynolds and Womersley Numbers are also used to calculate the thicknesses of the boundary layers that can form from the fluid flow’s viscous effects. The Reynolds number is used to calculate the convective inertial boundary layer thickness that can form, and the Womersley number is used to calculate the transient inertial boundary thickness that can form.
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.
Mary Jackson (née Winston; [1] April 9, 1921 – February 11, 2005) was an American mathematician and aerospace engineer at the National Advisory Committee for Aeronautics (NACA), which in 1958 was succeeded by the National Aeronautics and Space Administration (NASA).
The book is aimed at a young audience, [5] with many images and few mathematical details. [3] [5] Nevertheless, each biography is accompanied by a general-audience introduction to the subject's mathematical work, [4] and beyond images of the women profiled, the book includes many mathematical illustrations and historical images that bring to life these contributions.
Marjorie Reynolds (née Goodspeed; August 12, 1917 – February 1, 1997) was an American film and television actress who appeared in more than 50 films, including the 1942 musical Holiday Inn, [1] in which she and Bing Crosby introduced the song "White Christmas" in a duet, albeit with her singing dubbed.
Daphne Reynolds (née Dent; 12 January 1918 – 12 December 2002) was an English printmaker in mezzotint and painter. She began painting full-time in 1950, with her earliest works produced from watercolours and later oil .