0
TECHNICAL PAPERS

Numerical Study of the Flow Around a Bus-Shaped Body

[+] Author and Article Information
Siniša Krajnović, Lars Davidson

Department of Thermo and Fluid Dynamics, Chalmers University of Technology, SE-41296 Gothenburg, Sweden

J. Fluids Eng 125(3), 500-509 (Jun 09, 2003) (10 pages) doi:10.1115/1.1567305 History: Received April 09, 2002; Revised October 30, 2002; Online June 09, 2003
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Schematic representation of the time-averaged wake flow.
Grahic Jump Location
Time-averaged velocity profiles at three downstream locations at z=0. Fine grid (solid curve); medium grid (dashed curve); coarse grid (dashed-dotted curve); experiment (symbols).
Grahic Jump Location
Time-averaged streamlines projected onto planes: (a) x=−3.36H, (b) x=−2.88H, (c) x=−1.68H, (d) x=−0.48H, (e) x=0, and (f ) x=0.32H. The direction of the rotation of this vortex (T) is counterclockwise. View from behind of the lower-right edge of the body.
Grahic Jump Location
Time-averaged velocity vectors in plane x=−1.68H. View from behind of the lower-right edge of the bus.
Grahic Jump Location
Instantaneous streamlines at x=−0.48H. The time difference between two pictures is tU/H=3.2. View from behind of the lower-right edge of the bus.
Grahic Jump Location
Time-averaged streamlines projected onto symmetry plane z=0 of the bus. (a) Fine grid, (b) medium grid, (c) coarse grid.
Grahic Jump Location
The isosurface of time-averaged pressure p=−0.20. The black curves represent the vortex cores of the thin edge vortices B, the ring vortex W, and the longitudinal vortices behind the separation bubble P. Vortices on the right side (z<0),P and T, are visualized using streamlines in planes x=1.4H and x=−0.48H, respectively (note that the mirror image vortices on the left side, i.e., z>0, are not shown in this figure). View of the rear face of the body.
Grahic Jump Location
The instantaneous streamlines projected onto symmetry plane z=0 of the bus and the isosurface of the instantaneous pressure, p=−0.20. Note that only half of the pressure surface (for z≤0) is shown.
Grahic Jump Location
The time-averaged longitudinal vortex in the far wake in plane x=3.52H. View of the rear face of the bus.
Grahic Jump Location
Instantaneous coherent structures in the far wake visualized with isosurface of pressure p=−0.035.Bs is the free stagnation point at the closure of the separation bubble. View of the rear face of the bus.
Grahic Jump Location
Geometry of the vehicle body and computational domain
Grahic Jump Location
The topology of the fine grid. Note that only O grid and few blocks around it are shown. One-fourth of the O grid is removed in this figure.
Grahic Jump Location
The isosurface of the instantaneous second invariant of the velocity gradient, 35, Q=11000
Grahic Jump Location
Time-averaged trace lines on the surface of the body showing the roof vortex, R, the lateral vortex, L, and the stagnation point, Sf. View of the front face of the body.
Grahic Jump Location
Time-averaged streamlines projected onto plane x=−0.8H. The rotation of Up and Us is counterclockwise and clockwise, respectively. View from behind of the upper-right edge of the body.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In