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A numerical study of drag reduction by mini-belts in a smooth wall turbulent boundary layer

Published online by Cambridge University Press:  04 July 2016

L. Djenidi ,
R. A. Antonia  and
A. M. Savill
L. Djenidi
Affiliation:
Department of Mechanical Engineering, University of Newcastle, Australia
R. A. Antonia
Affiliation:
Department of Mechanical Engineering, University of Newcastle, Australia
A. M. Savill
Affiliation:
Department of Engineering, University of Cambridge, UK
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Abstract

A numerical study of drag reduction by mini-belts in a smooth wall turbulent boundary layer is carried using a second-moment closure turbulence model. The main objective of this exploratory work is to investigate the possibility of using mini-belts, driven by frictional drag only, to reduce the drag of a smooth wall. The results clearly show that such technique can be an effective and cheap means for achieving drag reduction. Furthermore, it is observed that, in contrast to riblets, the use of mini-belts does not suffer from geometrical or size constraints in the context of drag reduction. Also mini-belts will always reduce the skin friction regardless of the flow regime (laminar, transitional and turbulent). These advantages may quite well balance the major difficulty related to their mounting in practical situations

Type
Research Article
Information
The Aeronautical Journal , Volume 107 , Issue 1075 , September 2003 , pp. 559 - 564
Copyright
Copyright © Royal Aeronautical Society 2003 

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References

1. Coustols, E. and Savill, A.M., Turbulent skin-friction drag reduction by active and passive means: Part 1, AGARD Report 786, 1992, pp 8.1–8.80.Google Scholar
2. Djenidi, L., Elavarasan, R. and Antonia, R.A., The turbulent boundary layer over transverse square cavities, J Fluid Mech, 1999, 395, pp 271–294.Google Scholar
3. Modi, V.J., Moving surface boundary-layer control: A review, J Fluids and Structures, 1997, 11, pp 627–663.Google Scholar
4. Favre, A., Contribution à l’Étude Expérimentale des Mouvements Hydrodynamiques à Deux Dimensions, 1938, PhD thesis, University of Paris.Google Scholar
5. Uzkan, T. and Reynolds, W.C., A shear-free turbulent boundary layer, J Fluid Mech, 1967, 28, pp 803–821.Google Scholar
6. Hamelin, J. and Alving, A.E., A low-shear turbulent boundary layer, Phys Fluids, 1996, 8, pp 789–804.Google Scholar
7. Bott, D.M. and Bradshaw, P., Effect of high free-stream turbulence on turbulent boundary layer skin friction and heat transfer, 1997, Report MD-75, Mech Eng Dept, Stanford University.Google Scholar
8. Aronson, D., Johansson, A.V. and Löfdahl, L., Shear-free turbulence near a wall, J Fluid Mech, 1997, 333, pp 363–385.Google Scholar
9. Brungart, T.A., Lauchle, G.C., Deutsch, S. and Riggs, E.T., Effect of a moving wall on a fully developed, equilibrium turbulent boundary layer, Expts in Fluids, 2001, 30, pp 418–425.Google Scholar
10. Perot, J.B. and Moin, P., Shear-free turbulent boundary layers. Part I. Physical insights into near-wall turbulence, J Fluid Mech, 1995, 295, pp 199–227.Google Scholar
11. Bassina, I., Strelets, M. and Spalart, P.R., Response of simple turbulence models to step changes of slip velocity, AIAA J, 2001, 39, pp 201–210.Google Scholar
12. Tennekes, H. and Lumley, J.L. A First Course in Turbulence, 1972, MIT Press Cambridge.Google Scholar
13. Launder, B. and Shima, N., Second-moment closure for near-wall sublayer: development and application, AIAA J, 1989, 27, pp 1319–1325.Google Scholar
14. Gibson, M.M. and Launder, B.E., Ground effects on pressure fluctuations in the atmospheric boundary layer, J Fluid Mech, 1978, 86, pp 491–511.Google Scholar
15. Shima, N., Prediction of turbulent boundary layers with a second-moment closure, Part I, Effects of periodic pressure gradient, wall transportation and free-stream turbulence, J Fluids Eng, 1993, 115a, pp 56–63.Google Scholar
16. Shima, N., Prediction of turbulent boundary layers with a second-moment closure, Part II, Effects of streamline curve and spanwise rotation, J Fluids Eng, 1993, 115b, pp 64–69.Google Scholar
17. Djenidi, L. and Antonia, R.A., Riblet modelling using a second moment closure, Appl Sci Res, 1995, 54, pp 249–266.Google Scholar
18. Djenidi, L. and Antonia, R.A., Calculation of the effect of concentrated wall suction on a turbulent boundary layer using a second-order moment closure, Int J Heat and Fluid Flow, 2001.Google Scholar
19. Spalart, P.R., Direct simulation of a turbulent boundary layer up to Reθ = 1,410, J Fluid Mech, 1988, 187, pp 61–98.Google Scholar