Flow Structures above the Trunk Deck of Sedan-type Vehicles and their Influence on High-speed Vehicle Stability 2nd Report: Numerical Investigation on Simplified Vehicle Models using Large-Eddy Simulation

Document Number: 2009-01-0006

Date Published: April 2009

Author(s):
Takuji Nakashima - Hiroshima Univ.
Makoto Tsubokura - Hokkaido Univ.
Takahide Nouzawa - Mazda Motor Corp.
Takaki Nakamura - Mazda Motor Corp.
Masashi Ichimiya - Tokushima Univ.

Abstract:
In the present study, two kinds of simplified vehicle models, which can reproduce flow structures around the two sedan-type vehicles in the previous study, are constructed for the object and the unsteady flow structures are extracted using Large-Eddy Simulation technique. The numerical results are validated in a stationary condition by comparing the results with a wind-tunnel experiment and details of steady and unsteady flow characteristics around the models, especially above the trunk deck, are investigated. In quasi- and non-stationary manner with regard to vehicle pitch motion, unsteady flow characteristics are also investigated and their relations to an aerodynamic stability are discussed.

File Size: 3592K
Product Status: In Stock

Included in: V118-6

See other papers presented at SAE World Congress & Exhibition, April 2009, Detroit, MI, USA, Session: Vehicle Aerodynamics (Part 2 of 5): Turbulence and Unsteady Aero

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