|
Titre :
|
Experimental measurement of laminar axisymmetric flow through confined annular geometries with sudden inward expansion (2010)
|
|
Auteurs :
|
Afshin Goharzadeh, Auteur ;
Peter Rodgers, Auteur
|
|
Type de document :
|
Article : texte imprimé
|
|
Dans :
|
Transactions of the ASME . Journal of fluids engineering (Vol. 131 N° 12, Décembre 2009)
|
|
Article en page(s) :
|
04 p.
|
|
Note générale :
|
fluids engineering
|
|
Langues :
|
Anglais
|
|
Tags :
|
flow (dynamics)
;
measurement
;
eddies (fluid dynamics)
;
Reynolds number
;
laminar flow
;
particulate matter
|
|
Résumé :
|
In this paper, separating and reattaching aqueous laminar flows produced by a sudden inward expansion within confined annular geometries are experimentally studied. The test geometries are based on a previous numerical study. The fluid flow structure at the expansion region is experimentally characterized using particle image velocimetry combined with refractive index matching. The detailed measurements of the velocity field, reattachment length, and relative eddy intensity are obtained for two different expansion ratios, 1.4 and 1.6. For both expansion ratios, the reattachment length is found to vary nonlinearly with the Reynolds number (50
|
|
En ligne :
|
http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122&issueid=27402
|
