Titre :
|
Flow visualization and heat transfer experiments in a turbulent channel flow obstructed with an inserted square rod
|
Auteurs :
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M. Yao ;
M. Nakatani ;
K. Suzuki
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1995
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Format :
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p.389-397
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Langues:
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= Anglais
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Catégories :
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HYDROLOGIE ET HYDRAULIQUE
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Mots-clés:
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ECOULEMENT EN CONDUITE
;
ECOULEMENT TURBULENT
;
TRANSFERT DE CHALEUR
;
RETRECISSEMENT
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Résumé :
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Flow visualization and heat transfer measurements were made for a turbulent channel flow obstructed with an inserted square rod. The space between the square rod and the duct wall was changed in five steps. Intermittent dye injection method was introduced to visualize the Karman vortex shed from the rod and to track its motion. Hydrogen bubble method was combined to visualize the near-wall flow. The results reveal that the Karman vortex shows criss-cross motion, even when the rod is placed off the center plane.
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Source :
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Int. j. heat and fluid flow, vol.16
|