Luke's Variational Principle: Fluid Dynamics, Earth's Gravity - Tapa blanda

Luke's Variational Principle

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Please note that the content of this book primarily consists of articlesavailable from Wikipedia or other free sources online. In fluiddynamics, Luke's variational principle is a Lagrangian variationaldescription of the motion of surface waves on a fluid with a freesurface, under the action of gravity. This principle is named after J.C.Luke, who published it in 1967. This variational principle is forincompressible and inviscid potential flows, and is used to deriveapproximate wave models like the so-called mild-slope equation, or usingthe average-Lagrangian approach for wave propagation in inhomogeneousmedia. Luke's Lagrangian formulation can also be recast into aHamiltonian formulation in terms of the surface elevation and velocitypotential at the free surface. This is often used when modelling thespectral density evolution of the free-surface in a sea state, sometimescalled wave turbulence. Both the Lagrangian and Hamiltonian formulationscan be extended to include surface tension effects.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 120 pp. Englisch. Nº de ref. del artículo: 9786131125423

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