Study of vortical separation from an axisymmetric hill

Autor:	Roger L. Simpson, Gwibo Byun, C. H. Long
Rok vydání:	2002
Předmět:	Fluid Flow and Transfer Processes Physics Flow visualization Turbulent diffusion Turbulence Mechanical Engineering Mechanics Reynolds stress Condensed Matter Physics Vortex shedding Vortex Physics::Fluid Dynamics Boundary layer Classical mechanics Axial symmetry
Zdroj:	International Journal of Heat and Fluid Flow. 23:582-591
ISSN:	0142-727X
DOI:	10.1016/s0142-727x(02)00154-6
Popis:	Surface mean pressures, oil-flow visualizations, and three-velocity-component laser-Doppler velocimeter measurements are presented for a turbulent boundary layer of thickness δ over an axisymmetric hill of height H = 2δ. Complex vortical separations occur on the leeside and merge into two large streamwise mean vortices downstream. At x/H = 3.69, the near-wall flow (y + < 90) is dominated by the wall, while the vortices in the outer region produce large turbulence levels near the centerline and appear to have low frequency motions that contribute to turbulent diffusion
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0336bfe8c43a87cd4e344ffba15ce2bb https://doi.org/10.1016/s0142-727x(02)00154-6 Zobrazit plný text záznamu Full Text from ScienceDirect