Abstract
An experimental study was performed of a flat plate turbulent boundary layer disturbed by insertion of a Large Eddy Break-Up (LEBU) plate with a vortex generator attached. The vortex generator was found to work well to augment the wall heat transfer over a large streamwise distance, although the LEBU plate alone causes deteoriations in both heat transfer and skin friction coefficients on the wall. To investigate the mechanism of the achieved heat transfer augmentation, time mean values and fluctuating intensities of three velocity components were measured. It is concluded that the heat transfer augmentation is mainly caused by the approach of lower temperature fluid from the free stream toward the near-wall region. This results from a downwash fluid motion induced by the longitudinal vortex. Heat transfer enhancement can also be achieved in the region where a upwash fluid motion is observed. Such enhancement is produced by the activated near-wall turbulence.
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
Kawaguchi,Y., Matumori,Y. and Suzuki,K., (1984): “Structural study of momentum and heat transfer in the near-wall region of a disturbed turbulent boundary layer”, Proc. 9th Biennial Symp. on Turbulence, pp. 28. 1–28. 10
Suzuki, H., Suzuki, K. and Sato, T., (1988): “Dissimilarity between heat transfer and momentum transfer in a turbulent boundary layer disturbed by a cylinder”, Int. J. Heat Mass Transfer. Vol. 31 2, pp. 259–265
Nguyen, V.D., Savill, A.M. and Westpal, R.V., (1987): “Skin friction measurements following manipulation of a turbulent boundary layer”, AIAA Journal, 25, pp. 498–500
Savill, A.M. and Mumford, J.C., (1988): “Manipulation of turbulent boundary layers by out- erlayer devices: Skin friction and flow-visualization results”, J. Fluid Mechanics, 191, pp. 389–418
Eibeck, P. A. and Eaton, J.K., (1987): “Heat transfer effects of a longitudinal vortex embedded in a turbulent boundary layer”, Journal of Heat Transfer, Vol. 109, No 1, pp. 16–24
Torii, K., Yanagihara, I.J. and Nagai, Y., (1991): “Heat transfer enhancement by vortex generators”, Proc. ASME/JSME Thermal Engineering, pp. 77–83
Johnson, H. A. and Rubesin, M.M., (1949): “Aerodynamic heating and convection heat transfer - Summary of literature survey”, Trans. ASME, 71, pp. 447–456
Hishida, M. and Nagano, Y., (1988): “Turbulence Measurements of with symmetrically bent V- shaped hot-wires. Part 1: Principles of operation. Journal of Fluids Engineering”, Vol. 110, pp. 264–269
Inaoka, K., Suzuki, K., Hagiwara, Y. Suzuki, K. and Suzuki, H., (1992): “Heat transfer aug-mentation in a turbulent boundary layer disturbed by means of a vortex generator” Heat Transfer Japanese Research, Vol. 21, no 7, pp. 721–735
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1995 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Inaoka, K., Suzuki, K. (1995). Structure of the Turbulent Boundary Layer and Heat Transfer Downstream of a Vortex Generator Attached to a LEBU Plate. In: Durst, F., Kasagi, N., Launder, B.E., Schmidt, F.W., Suzuki, K., Whitelaw, J.H. (eds) Turbulent Shear Flows 9. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78823-9_22
Download citation
DOI: https://doi.org/10.1007/978-3-642-78823-9_22
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-78825-3
Online ISBN: 978-3-642-78823-9
eBook Packages: Springer Book Archive