Bagnold may refer to:
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Enid Bagnold
Enid Algerine Bagnold, Lady Jones, (27 October 1889 – 31 March 1981) was a British writer and playwright best known for the 1935 story '' National Velvet''.
Early life
Enid Algerine Bagnold was born on 27 October 1889 in Rochester, Kent, ...
(1889–1981), author and playwright
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Millicent Bagnold, a character in the Harry Potter books
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Ralph Bagnold
Brigadier Ralph Alger Bagnold, OBE, FRS, (3 April 1896 – 28 May 1990) was an English 20th-century desert explorer, geologist, and soldier.
Bagnold served in the First World War as an engineer in the British Army.
In 1932, he staged the ...
(1896–1990), British Army Officer
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Bagnold number
The Bagnold number (Ba) is the ratio of grain collision stresses to viscous fluid stresses in a granular flow with interstitial Newtonian fluid, first identified by Ralph Alger Bagnold.
The Bagnold number is defined by
: \mathrm=\frac,
where ...
, a representation of the ratio of stresses within granular flows
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Bagnold formula
The Bagnold formula, named after Ralph Alger Bagnold, relates the amount of sand moved by the wind to wind speed by saltation. It states that the mass transport of sand is proportional to the third power of the friction velocity. Under steady con ...
, a calculation relating the amount of a wind-blown fluid to wind speed
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Bagnold Dunes
The Bagnold Dunes is a group of dark grey dunes in the Gale Crater on Mars. They are named after Ralph Alger Bagnold, who crossed the Libyan Desert and was one of the first explorers to acquire a deep understanding of the physics behind sand dunes ...
, an extraterrestrial dune field
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