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.
Drag reduction of boat-tailed bluff bodies through transverse grooves
Mariotti A.
Primo
;Buresti G.;Salvetti M. V.Ultimo
2019-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
