Passive Control Around the Two-Dimensional Square Back Ahmed Body Using Porous Devices

The control of two-dimensional flows around the square back Ahmed body is achieved by using porous devices added on some parts of the body. The square back Ahmed body is considered either in an open domain or on top of a road. The modeling of the flow in different media is performed by means of the penalization method. A good choice of the location of the porous interfaces yields a significant improvement of the aerodynamic quantities, especially for the square back body.

[1]  Gilles Carbou,et al.  Brinkmann Model and Double Penalization Method for the Flow Around a Porous Thin Layer , 2008 .

[2]  Lars Davidson,et al.  Numerical Study of the Flow Around a Bus-Shaped Body , 2003 .

[3]  D. Joseph,et al.  Boundary conditions at a naturally permeable wall , 1967, Journal of Fluid Mechanics.

[4]  P. Bearman,et al.  Control of circular cylinder flow by the use of dimples , 1993 .

[5]  H. E. Fiedler,et al.  On management and control of turbulent shear flows , 1990 .

[6]  Nicholas K.-R. Kevlahan,et al.  Computation of turbulent flow past an array of cylinders using a spectral method with Brinkman penalization , 2001 .

[7]  Mathieu Roumeas,et al.  Contribution à l'analyse et au contrôle des sillages de corps épais par aspiration ou soufflage continu , 2006 .

[8]  K. Koenig,et al.  Interaction Effects on the Drag of Bluff Bodies in Tandem , 1978 .

[9]  Peter W. Bearman,et al.  Investigation of the flow behind a two-dimensional model with a blunt trailing edge and fitted with splitter plates , 1965, Journal of Fluid Mechanics.

[10]  Frédéric Valentin,et al.  Effective Boundary Conditions for Laminar Flows over Periodic Rough Boundaries , 1998 .

[11]  Patrick Gilliéron.  Detailed analysis of the overtaking process , 2003 .

[12]  P. Fabrie,et al.  EFFECTIVE DOWNSTREAM BOUNDARY CONDITIONS FOR INCOMPRESSIBLE NAVIER-STOKES EQUATIONS , 1994 .

[13]  Brian Straughan,et al.  Convection in Porous Media , 2008 .

[14]  S. Whitaker.  The method of volume averaging , 1998 .

[15]  Philippe Angot,et al.  A penalization method to take into account obstacles in incompressible viscous flows , 1999, Numerische Mathematik.

[16]  I. Mortazavi,et al.  Control of vortex shedding around a pipe section using a porous sheat. , 2006 .

[17]  Patrick Gilliéron,et al.  Contrôle des écoulements appliqué a l'automobile. État de l'art , 2002 .

[18]  W. A. Mair.  The Effect of a Rear-Mounted Disc on the Drag of a Blunt-Based Body of Revolution , 1965 .

[19]  Gunther Ramm,et al.  Some salient features of the time - averaged ground vehicle wake , 1984 .

[20]  Stefan Becker,et al.  Flow and Turbulence Structures in the Wake of a Simplified Car Model (Ahmed Modell) , 2002 .

[21]  P. Gilliéron,et al.  Analysis of hysteresis and phase shifting phenomena in unsteady three-dimensional wakes , 2003 .

[22]  I. Mortazavi,et al.  Passive control of the flow around a square cylinder using porous media , 2004 .

[23]  C. Bruneau,et al.  The 2D lid-driven cavity problem revisited , 2006 .

[24]  J. Caltagirone,et al.  Sur l'intéraction fluide-milieu poreux ; application au calcul des efforts exercés sur un obstacle par un fluide visqueux , 1994 .

[25]  Kevin R. Cooper,et al.  The Effect of Front-Edge Rounding and Rear-Edge Shaping on the Aerodynamic Drag of Bluff Vehicles in Ground Proximity , 1985 .

[26]  Patrick Gilliéron,et al.  Modelling of stationary three-dimensional separated air flows around an Ahmed reference model , 1999 .