Abstract
A mean, 2-D separating and reattaching flow over a blunt flat plate at a \(\operatorname{Re} = \frac{{Uh}}{v} = 1000\) (plate thickness, h) has been investigated using Particle Image Velocimetry (PIV). Medium spatial resolution instantaneous velocity field measurements, as well as temporal velocity field measurements in and around the separation bubble have been obtained. The experimental results show a highly unsteady flapping of the shear layer causing considerable variation in the size of the separation bubble. This flapping occurs principally in the downstream region of the separated shear layer and results in a large uncertainty of the instantaneous reattachment point.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Fouras, A. (1997). Development of a cross-correlation piv image recording technique and analysis of velocity and vorticity measurement error applied to an unsteady separated flow. Master’s thesis Department of Mechanical Engineering, Monash University.
Fouras, A. & Soria, J. (1998). Accuracy of out-of-plane vorticity measurements using in-plane velocity vector field data. Exp. Fluids. accepted for publication.
Kostas, D., Fouras, A., & Soria, J. (1996). Application of optical image shifting in piv. In First Australasian Conference on Laser Diagnostics in Fluid Mechanics and Combustion pp. 113–118 Australia. The University of Sydney.
Lourenco, L. (1991). Recent advances in lsv, piv and ptv. In Flow Visualisation and Image Analysis volume 279 pp. 81–99. Euromech Colloquium.
Nicolaides, D. (1997). Measurement of spatial quantities in grid turbulence using particle image velocimetry. Master’s thesis Department of Mechanical Engineering, Monash University.
Soria, J., Kostas, J., Fouras, A., & Cater, J. (1998). A high spatial resolution and large dynamic range cross-correlation piv technique for turbulent flow measurement. In Optical Methods and Data Processing in Heat and Fluid Flow City University, London. Institution of Mechanical Engineers.
Soria, J., Welsh, M., Wu, J., & Sheridan, M. (1991). Three-dimensionalities in natural and perturbed separated unsteady flow from a square leading edge flat plate. In 44th APS/DFD Scottsdale, Arizona, USA.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Kostas, J., Fouras, A., Soria, J., Chong, M.S. (1998). Flow Field Measurements of Separated and Reattached Flows. In: Frisch, U. (eds) Advances in Turbulence VII. Fluid Mechanics and Its Applications, vol 46. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5118-4_3
Download citation
DOI: https://doi.org/10.1007/978-94-011-5118-4_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6151-3
Online ISBN: 978-94-011-5118-4
eBook Packages: Springer Book Archive