The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 29-104
Full Name: Pietro Zunino
Position: Professor
Age: ON
Sex: Male
Address: University of Genova, Via Montallegro 1, I-16145 Genova
Country: ITALY
Tel: 0039 3204320006
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E-mail address: pietro.zunino@unige.it
Other E-mails: zunmp @unige.it
Title of the Paper: Hot-Film and LDV Investigation of the Boundary Layer Transition on a Turbine Profile at Different Reynolds Numbers
Authors as they appear in the Paper: Daniele Simoni, Marina Ubaldi, Pietro Zunino
Email addresses of all the authors: daniele.simoni@unige.it, marina.ubaldi@unige.it, pietro.zunino@unige.it
Number of paper pages: 10
Abstract: An experimental investigation of the suction side boundary layer of a large scale turbine cascade has been performed to study the effect of Reynolds number on the boundary layer transition process at large (1600000) and moderate (590000) Reynolds numbers. The boundary layer development has been investigated by means of a two-component laser Doppler velocimeter. Time traces of the instantaneous velocities and boundary layer velocity and turbulence fields provide a physical insight of the different transition processes for the two Reynolds numbers. Surface mounted hot-film gauges were used to measure the quasi wall shear layer, which is proportional to the wall shear stress. Statistical analysis of the instantaneous data, including statistical moments, probability density function and intermittency function distributions, provides quantitative information on the state of advancement of the transition process at the two different Reynolds numbers.
Keywords: Boundary layer transition, Turbine profile, Hot-film probes, Wall shear stress, Intermittency detection technique, LDV measurements
EXTENSION of the file: .pdf
Special (Invited) Session: Effect of the Reynolds Number on the Boundary Layer Transition of a Turbine Profile
Organizer of the Session: 609-647
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