Abstract
This study concerns with aerodynamic drag on a passenger car. By using computational fluid dynamics (CFD) method, we found that values of skin friction coefficients for three different parts of the car: front, top and rear parts, are different. This study addresses three different basic possible flows around a car: favourable, zero and adverse pressure gradients. Generally, cars use approximately 20% of their engine power to overcome aerodynamic drag, which is generally proportional to the frontal area. The boundary layer at each position has been analyzed to ascertain the effect of wall shear stress on the car surface. It is found that the value of wall shear stress velocity is highest at the rear part, followed by front and top parts. Subsequently, it is shown that the front part has the thinnest viscous region despite not being the part with the highest local ambient velocity compared with the top and rear parts. Despite its supposed aerodynamic shape, the rear part of the car sees separation of flow and the total drag per unit area here is the largest, twice as large as front part and more than seven times larger than the top part.
| Original language | English |
|---|---|
| Title of host publication | Applied Mechanics and Materials |
| Publisher | Trans Tech Publications Ltd |
| Pages | 450-455 |
| Number of pages | 6 |
| Volume | 629 |
| ISBN (Print) | 9783038352327, 9783038352327 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 5th AEROTECH conference - Kuala Lumpur Duration: 29 Oct 2014 → 30 Oct 2014 |
Publication series
| Name | Applied Mechanics and Materials |
|---|---|
| Volume | 629 |
| ISSN (Print) | 16609336 |
| ISSN (Electronic) | 16627482 |
Other
| Other | 5th AEROTECH conference |
|---|---|
| City | Kuala Lumpur |
| Period | 29/10/14 → 30/10/14 |
Fingerprint
Keywords
- Aerodynamic
- Boundary layer
- Skin friction coefficient
- Wall shear stress
ASJC Scopus subject areas
- Engineering(all)
Cite this
Skin friction coefficient and boundary layer trend on UKM Aster i-Bond. / Harun, Zambri; Musa, Muhammad Syafiq; Mohammad Rasani, Mohammad Rasidi; Abdullah, Shahrum; Zulkifli, Rozli; Wan Mahmood, Wan Mohd Faizal; Ghazali, Mariyam Jameelah; Azhari, Che Husna; Abu Mansor, Mohd Radzi; Zainol Abidin, Zulkhairi; Abbas, Ashraf Amer.
Applied Mechanics and Materials. Vol. 629 Trans Tech Publications Ltd, 2014. p. 450-455 (Applied Mechanics and Materials; Vol. 629).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Skin friction coefficient and boundary layer trend on UKM Aster i-Bond
AU - Harun, Zambri
AU - Musa, Muhammad Syafiq
AU - Mohammad Rasani, Mohammad Rasidi
AU - Abdullah, Shahrum
AU - Zulkifli, Rozli
AU - Wan Mahmood, Wan Mohd Faizal
AU - Ghazali, Mariyam Jameelah
AU - Azhari, Che Husna
AU - Abu Mansor, Mohd Radzi
AU - Zainol Abidin, Zulkhairi
AU - Abbas, Ashraf Amer
PY - 2014
Y1 - 2014
N2 - This study concerns with aerodynamic drag on a passenger car. By using computational fluid dynamics (CFD) method, we found that values of skin friction coefficients for three different parts of the car: front, top and rear parts, are different. This study addresses three different basic possible flows around a car: favourable, zero and adverse pressure gradients. Generally, cars use approximately 20% of their engine power to overcome aerodynamic drag, which is generally proportional to the frontal area. The boundary layer at each position has been analyzed to ascertain the effect of wall shear stress on the car surface. It is found that the value of wall shear stress velocity is highest at the rear part, followed by front and top parts. Subsequently, it is shown that the front part has the thinnest viscous region despite not being the part with the highest local ambient velocity compared with the top and rear parts. Despite its supposed aerodynamic shape, the rear part of the car sees separation of flow and the total drag per unit area here is the largest, twice as large as front part and more than seven times larger than the top part.
AB - This study concerns with aerodynamic drag on a passenger car. By using computational fluid dynamics (CFD) method, we found that values of skin friction coefficients for three different parts of the car: front, top and rear parts, are different. This study addresses three different basic possible flows around a car: favourable, zero and adverse pressure gradients. Generally, cars use approximately 20% of their engine power to overcome aerodynamic drag, which is generally proportional to the frontal area. The boundary layer at each position has been analyzed to ascertain the effect of wall shear stress on the car surface. It is found that the value of wall shear stress velocity is highest at the rear part, followed by front and top parts. Subsequently, it is shown that the front part has the thinnest viscous region despite not being the part with the highest local ambient velocity compared with the top and rear parts. Despite its supposed aerodynamic shape, the rear part of the car sees separation of flow and the total drag per unit area here is the largest, twice as large as front part and more than seven times larger than the top part.
KW - Aerodynamic
KW - Boundary layer
KW - Skin friction coefficient
KW - Wall shear stress
UR - http://www.scopus.com/inward/record.url?scp=84921646909&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921646909&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.629.450
DO - 10.4028/www.scientific.net/AMM.629.450
M3 - Conference contribution
AN - SCOPUS:84921646909
SN - 9783038352327
SN - 9783038352327
VL - 629
T3 - Applied Mechanics and Materials
SP - 450
EP - 455
BT - Applied Mechanics and Materials
PB - Trans Tech Publications Ltd
ER -