Investigating vortex streets behind real and virtual bluff bodies

Autor:	Y. D. Afanasyev, C. G. Deacon
Rok vydání:	2006
Předmět:	Physics::Fluid Dynamics Physics Surface (mathematics) Classical mechanics Flow (mathematics) Bluff Magnet General Physics and Astronomy Cylinder Force field (fiction) Mechanics Electric current Vortex
Zdroj:	American Journal of Physics. 74:236-240
ISSN:	1943-2909 0002-9505
DOI:	10.1119/1.2173274
Popis:	This paper describes a laboratory experiment designed to study regular arrays of vortices occurring behind an object in a stream of fluid. This phenomenon is observed in industrial flows, flows in the ocean, and in the atmosphere. In the first part of the experiment we consider the flow behind a circular cylinder. In the second part of the experiment the effect of a body on the fluid is imitated by using an appropriate force field, with no real body present in the fluid. The force field (virtual body) is created by a permanent magnet located above the surface of water in combination with an electric current applied in the horizontal direction. The apparatus required for the experiment is inexpensive and easy to construct.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1967452685ca58b764923fd826849909 https://doi.org/10.1119/1.2173274 Zobrazit plný text záznamu