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2019 | OriginalPaper | Buchkapitel

Drag Reduction of Boat-Tailed Bluff Bodies Through Transverse Grooves

verfasst von : A. Mariotti, G. Buresti, M. V. Salvetti

Erschienen in: Direct and Large-Eddy Simulation XI

Verlag: Springer International Publishing

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Abstract

The present work describes a strategy for the aerodynamic drag reduction of elongated axisymmetric bluff bodies, which can be viewed as simplified models of road vehicles. One well-known method to reduce the drag of this type of body is a geometrical modification denoted as boat-tailing, which consists in a gradual reduction of the body cross-section before a sharp-edged base (Maull et al, J R Aeronaut Soc 71, 854–858, 1967, [1], Mair, Aeronaut Q 20, 307–320, 1969, [2], Wong and Mair, J Wind Eng Ind Aerodyn, 12, 229–235, 1983, [3]). We combine herein boat-tailing with properly contoured transverse grooves to further delay boundary-layer separation and to reduce drag.

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Literatur
1.
Zurück zum Zitat Maull, D.J., Hoole, B.J.: The effect of boat-tailing on the flow round a two-dimensional blunt-based aerofoil at zero incidence. J. R. Aeronaut. Soc. 71, 854–858 (1967)CrossRef Maull, D.J., Hoole, B.J.: The effect of boat-tailing on the flow round a two-dimensional blunt-based aerofoil at zero incidence. J. R. Aeronaut. Soc. 71, 854–858 (1967)CrossRef
2.
Zurück zum Zitat Mair, W.A.: Reduction of base drag by boat-tailed afterbodies in low-speed flow. Aeronaut. Q. 20, 307–320 (1969)CrossRef Mair, W.A.: Reduction of base drag by boat-tailed afterbodies in low-speed flow. Aeronaut. Q. 20, 307–320 (1969)CrossRef
3.
Zurück zum Zitat Wong, D.-M, Mair, W.A.: Boat-tailed afterbodies of square section as drag-reduction devices. J. Wind. Eng. Ind. Aerodyn. 12, 229–235 (1983)CrossRef Wong, D.-M, Mair, W.A.: Boat-tailed afterbodies of square section as drag-reduction devices. J. Wind. Eng. Ind. Aerodyn. 12, 229–235 (1983)CrossRef
4.
Zurück zum Zitat Mariotti, A., Grozescu, A.N., Buresti, G., Salvetti, M.V.: Separation control and efficiency improvement in a 2D diffuser by means of contoured cavities. Eur. J. Mech. B-Fluid 41, 138–149 (2013)CrossRef Mariotti, A., Grozescu, A.N., Buresti, G., Salvetti, M.V.: Separation control and efficiency improvement in a 2D diffuser by means of contoured cavities. Eur. J. Mech. B-Fluid 41, 138–149 (2013)CrossRef
5.
Zurück zum Zitat Mariotti, A., Buresti, G., Salvetti, M.V.: Control of the turbulent flow in a plane diffuser through optimized contoured cavities. Eur. J. Mech. B-Fluid 48, 254–265 (2014)CrossRef Mariotti, A., Buresti, G., Salvetti, M.V.: Control of the turbulent flow in a plane diffuser through optimized contoured cavities. Eur. J. Mech. B-Fluid 48, 254–265 (2014)CrossRef
6.
Zurück zum Zitat Mariotti, A., Buresti, G., Salvetti, M.V.: Use of multiple local recirculations to increase the efficiency in diffusers. Eur. J. Mech. B-Fluid 50, 27–37 (2015)CrossRef Mariotti, A., Buresti, G., Salvetti, M.V.: Use of multiple local recirculations to increase the efficiency in diffusers. Eur. J. Mech. B-Fluid 50, 27–37 (2015)CrossRef
7.
Zurück zum Zitat Mariotti, A., Buresti, G.: Experimental investigation on the influence of boundary layer thickness on the base pressure and near-wake flow features of an axisymmetric blunt-based body. Exp. Fluids 54, 1612 (2013)CrossRef Mariotti, A., Buresti, G.: Experimental investigation on the influence of boundary layer thickness on the base pressure and near-wake flow features of an axisymmetric blunt-based body. Exp. Fluids 54, 1612 (2013)CrossRef
8.
Zurück zum Zitat Mariotti, A., Buresti, G., Salvetti, M.V.: Connection between base drag, separating boundary layer characteristics and wake mean recirculation length of an axisymmetric blunt-based body. J. Fluid Struct. 55, 191–203 (2015)CrossRef Mariotti, A., Buresti, G., Salvetti, M.V.: Connection between base drag, separating boundary layer characteristics and wake mean recirculation length of an axisymmetric blunt-based body. J. Fluid Struct. 55, 191–203 (2015)CrossRef
9.
Zurück zum Zitat Camarri, S., Salvetti, M.V., Koobus, B., Dervieux, A.: A low-diffusion MUSCL scheme for LES on unstructured grids. Comput. Fluids 33, 1101–1129 (2004)CrossRef Camarri, S., Salvetti, M.V., Koobus, B., Dervieux, A.: A low-diffusion MUSCL scheme for LES on unstructured grids. Comput. Fluids 33, 1101–1129 (2004)CrossRef
10.
Zurück zum Zitat Ouvrard, H., Koobus, B., Dervieux, A., Salvetti, M.V.: Classical and variational multiscale LES of the flow around a circular cylinder on unstructured grids. Comput. Fluids 39, 1083–1094 (2010)CrossRef Ouvrard, H., Koobus, B., Dervieux, A., Salvetti, M.V.: Classical and variational multiscale LES of the flow around a circular cylinder on unstructured grids. Comput. Fluids 39, 1083–1094 (2010)CrossRef
11.
Zurück zum Zitat Rossiter, J.E.: Wind-tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds. Aeronautical Research Council. Reports Memoranda No. 3438 (1964) Rossiter, J.E.: Wind-tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds. Aeronautical Research Council. Reports Memoranda No. 3438 (1964)
12.
Zurück zum Zitat Rockwell, D., Naudascher, E.: Review \(-\) self-sustaining oscillations of flow past cavities. J. Fluid Eng. - T. ASME 100, 152–165 (1978)CrossRef Rockwell, D., Naudascher, E.: Review \(-\) self-sustaining oscillations of flow past cavities. J. Fluid Eng. - T. ASME 100, 152–165 (1978)CrossRef
Metadaten
Titel
Drag Reduction of Boat-Tailed Bluff Bodies Through Transverse Grooves
verfasst von
A. Mariotti
G. Buresti
M. V. Salvetti
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-030-04915-7_65

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