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Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations

The present study investigated the aerodynamic pitching stability of sedan-type vehicles under the influence of A- and C-pillar geometrical configurations. The numerical method used for the investigation is based on the Large Eddy Simulation (LES) method. Whilst, the Arbitrary Lagrangian-Eulerian (A...

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Main Authors: Cheng, See Yuan, Tsubokura, Makoto, Okada, Yoshihiro, Nakashima, Takuji, Nouzawa, Takahide
Format: Conference or Workshop Item
Language:English
Published: 2013
Online Access:http://eprints.utem.edu.my/id/eprint/10483/1/SAE_2013_Abstract.pdf
http://eprints.utem.edu.my/id/eprint/10483/
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spelling my.utem.eprints.104832021-07-05T15:38:13Z http://eprints.utem.edu.my/id/eprint/10483/ Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations Cheng, See Yuan Tsubokura, Makoto Okada, Yoshihiro Nakashima, Takuji Nouzawa, Takahide The present study investigated the aerodynamic pitching stability of sedan-type vehicles under the influence of A- and C-pillar geometrical configurations. The numerical method used for the investigation is based on the Large Eddy Simulation (LES) method. Whilst, the Arbitrary Lagrangian-Eulerian (ALE) method was employed to realize the prescribed pitching oscillation of vehicles during dynamic pitching and fluid flow coupled simulations. The trailing vortices that shed from the A-pillar and C-pillar edges produced the opposite tendencies on how they affect the aerodynamic pitching stability of vehicles. In particular, the vortex shed from the A-pillar edge tended to enhance the pitching oscillation of vehicle, while the vortex shed from the C-pillar edge tended to suppress it. Hence, the vehicle with rounded A-pillar and angular C-pillar exhibited a higher aerodynamic damping than the vehicle with the opposite A- and C-pillars configurations. The underlying aerodynamic damping mechanism has been verified through flow visualization of phase-averaged results. 2013 Conference or Workshop Item PeerReviewed text en http://eprints.utem.edu.my/id/eprint/10483/1/SAE_2013_Abstract.pdf Cheng, See Yuan and Tsubokura, Makoto and Okada, Yoshihiro and Nakashima, Takuji and Nouzawa, Takahide (2013) Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations. In: SAE 2013 World Congress & Exhibition, 16-18 April 2013, Detroit, USA.
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description The present study investigated the aerodynamic pitching stability of sedan-type vehicles under the influence of A- and C-pillar geometrical configurations. The numerical method used for the investigation is based on the Large Eddy Simulation (LES) method. Whilst, the Arbitrary Lagrangian-Eulerian (ALE) method was employed to realize the prescribed pitching oscillation of vehicles during dynamic pitching and fluid flow coupled simulations. The trailing vortices that shed from the A-pillar and C-pillar edges produced the opposite tendencies on how they affect the aerodynamic pitching stability of vehicles. In particular, the vortex shed from the A-pillar edge tended to enhance the pitching oscillation of vehicle, while the vortex shed from the C-pillar edge tended to suppress it. Hence, the vehicle with rounded A-pillar and angular C-pillar exhibited a higher aerodynamic damping than the vehicle with the opposite A- and C-pillars configurations. The underlying aerodynamic damping mechanism has been verified through flow visualization of phase-averaged results.
format Conference or Workshop Item
author Cheng, See Yuan
Tsubokura, Makoto
Okada, Yoshihiro
Nakashima, Takuji
Nouzawa, Takahide
spellingShingle Cheng, See Yuan
Tsubokura, Makoto
Okada, Yoshihiro
Nakashima, Takuji
Nouzawa, Takahide
Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
author_facet Cheng, See Yuan
Tsubokura, Makoto
Okada, Yoshihiro
Nakashima, Takuji
Nouzawa, Takahide
author_sort Cheng, See Yuan
title Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
title_short Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
title_full Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
title_fullStr Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
title_full_unstemmed Aerodynamic Pitching Stability Of Sedan-Type Vehicles Influenced By Pillar-Shape Configurations
title_sort aerodynamic pitching stability of sedan-type vehicles influenced by pillar-shape configurations
publishDate 2013
url http://eprints.utem.edu.my/id/eprint/10483/1/SAE_2013_Abstract.pdf
http://eprints.utem.edu.my/id/eprint/10483/
_version_ 1705060017578704896
score 13.211869

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