A generalized mean-field model of the natural and high-frequency actuated flow around a high-lift configuration

Autor:	Bernd R. Noack, Rudibert King, Dirk M. Luchtenburg, Bert Günther, Gilead Tadmor
Rok vydání:	2009
Předmět:	Physics business.industry Mechanical Engineering Mechanics Condensed Matter Physics Vortex shedding Instability Physics::Fluid Dynamics Lift (force) Optics Mean field theory Mechanics of Materials System parameters Generalized mean business Galerkin method
Zdroj:	Journal of Fluid Mechanics. 623:283-316
ISSN:	1469-7645 0022-1120
DOI:	10.1017/s0022112008004965
Popis:	A low-dimensional Galerkin model is proposed for the flow around a high-lift configuration, describing natural vortex shedding, the high-frequency actuated flow with increased lift and transients between both states. The form of the dynamical system has been derived from a generalized mean-field consideration. Steady state and transient URANS (unsteady Reynolds-averaged Navier–Stokes) simulation data are employed to derive the expansion modes and to calibrate the system parameters. The model identifies the mean field as the mediator between the high-frequency actuation and the low-frequency natural shedding instability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b44351e4a59a93182573d7d18e3055bf https://doi.org/10.1017/s0022112008004965 Zobrazit plný text záznamu