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...
Saved in:
Main Authors: | , , , , |
---|---|
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/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utem.eprints.10483 |
---|---|
record_format |
eprints |
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 |
13.18916 |