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Geometrization of vortex and spiral flows in an ideal homogeneous fluid
A. V. Kistovich, Yu. D. Chashechkin Institute for Problems in Mechanics,
Vernadskogo Pr., 101/1, 117526, Moscow, Russia
Аннотация:
The theoretical study of steady vortex motion of homogeneous ideal heavy fluid with a free surface by methods of differential geometry is presented. The main idea of methods is based on suggestion that a velocity field is formed by geodesic flows at some surfaces. For steady flow integral flow lines are geodesics on the second order surfaces being parameterized and located in the space occupied by the fluid. In this case both Euler and continuity equations are transformed into equations for inner geometry parameters. Conditions on external parameters are derived from boundary conditions of the problem. The investigation of properties of generalized Rankine vortex that is vertical vortex flow contacting with a free surface is done. In supplement to the classical Rankine vortex these vortices are characterized by all finite specific integral invariants. The constructed set of explicit solutions depend on a unique parameter, which can be defined experimentally through measurements of depth and shape of a near surface hole produced by the vortex.
Поступила в редакцию: 20.02.2004
Образец цитирования:
A. V. Kistovich, Yu. D. Chashechkin, “Geometrization of vortex and spiral flows in an ideal homogeneous fluid”, Regul. Chaotic Dyn., 9:1 (2004), 21–28
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/rcd727 https://www.mathnet.ru/rus/rcd/v9/i1/p21
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Страница аннотации: | 58 |
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