Enhancement of spanwise coherence in laminar vortex streets

Autor:	Boye Ahlborn, Marcel Lefrançois
Rok vydání:	1992
Předmět:	Physics Flow visualization Turbulence General Engineering Laminar flow Mechanics Wake Vortex generator Vortex shedding Kármán vortex street Vortex Physics::Fluid Dynamics Classical mechanics Condensed Matter::Superconductivity
Zdroj:	Physics of Fluids A: Fluid Dynamics. 4:1851-1853
ISSN:	0899-8213
DOI:	10.1063/1.858356
Popis:	Flow visualization experiments with stripped dye markings show that the vortices in the wake of an impulsively started circular cylinder initially form with random phase along the span. In successive vortex generations, small perturbations disappear within a few cycles, and the eddies align parallel to the cylinder. The spanwise coherence is enhanced if vortex shedding is initiated by trigger plates.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::958c18ce440a3ee72118d08c73fc9e9e https://doi.org/10.1063/1.858356 Zobrazit plný text záznamu