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In fluid dynamics, the Lamb–Oseen vortex models a line vortex that decays due to viscosity. This vortex is named after Horace Lamb and Carl Wilhelm Oseen. [1] [2] Vector plot of the Lamb–Oseen vortex velocity field. Evolution of a Lamb–Oseen vortex in air in real time. Free-floating test particles reveal the velocity and vorticity pattern.
In fluid dynamics, the Oseen equations (or Oseen flow) describe the flow of a viscous and incompressible fluid at small Reynolds numbers, as formulated by Carl Wilhelm Oseen in 1910. Oseen flow is an improved description of these flows, as compared to Stokes flow , with the (partial) inclusion of convective acceleration .
He gave his name to the Oseen tensor and, with Horace Lamb, to the Lamb–Oseen vortex. The Basset–Boussinesq–Oseen (BBO) equation describes the motion of – and forces on – a particle moving in an unsteady flow at low Reynolds numbers. He was a Plenary Speaker of the ICM in 1936 in Oslo. [5]
Basset–Boussinesq–Oseen equation; Batchelor vortex; Batchelor–Chandrasekhar equation; Benedict–Webb–Rubin equation; Benjamin–Bona–Mahony equation; Bernoulli's principle; Black-oil equations; Borda–Carnot equation; Bosanquet equation; Boussinesq approximation (water waves) Buckley–Leverett equation; Burgers' equation
Vortex – Fluid flow revolving around an axis of rotation; Water hammer – Pressure surge when a fluid is forced to stop or change direction suddenly; Wave drag – Aircraft aerodynamic drag at transonic and supersonic speeds due to the presence of shock waves; Wind – Natural movement of air or other gases relative to a planet's surface
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" The polar vortex is defined as a mass of cold air that is tightly bound to polar regions by strong counterclockwise winds known as the polar jet stream," Thornton explained.
Sir Horace Lamb (27 November 1849 – 4 December 1934 [3]) was a British applied mathematician and author of several influential texts on classical physics, among them Hydrodynamics (1895) and Dynamical Theory of Sound (1910). [4]