PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number

András Gulyás, Ágnes Bodor, Tamas Regert, I. Jánosi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Experiments by using 2D-2C Particle Image Velocimetry (PIV) were carried out and reported concerning the flow field past a generic car body (modified Ahmed body) which is equipped with wheels and wheel-arches. The Reynolds number was chosen to not exceed 2E+5 based on the height of the Ahmed body which makes it possible to investigate the same configuration by means of Large Eddy Simulation (LES). The wheels were rotating but the ground was stationary. The wheel-ground contact was realized by means of small rectangular openings below the wheels in the ground plane in which the wheels were immersed. The transition contour of the immersed wheels and the ground, as well as the rectangular openings below the wheels were properly sealed to prevent parasite flow and to provide well defined boundary conditions for an upcoming LES investigation.The flow field was measured in several planes with normal vectors pointing towards the directions normal to the free stream. Statistical characteristics of the flow are provided and discussed.

Original languageEnglish
Pages (from-to)220-232
Number of pages13
JournalInternational Journal of Heat and Fluid Flow
Volume43
DOIs
Publication statusPublished - Oct 2013

Fingerprint

Large eddy simulation
large eddy simulation
particle image velocimetry
wheels
Velocity measurement
Reynolds number
Wheels
Railroad cars
Flow fields
flow distribution
parasites
arches
free flow
Arches
Boundary conditions
boundary conditions
configurations

Keywords

  • Ahmed body
  • PIV
  • Vehicle aerodynamics
  • Wheel

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number. / Gulyás, András; Bodor, Ágnes; Regert, Tamas; Jánosi, I.

In: International Journal of Heat and Fluid Flow, Vol. 43, 10.2013, p. 220-232.

Research output: Contribution to journalArticle

@article{f8332949ae094b2dae235c2130f8ff01,
title = "PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number",
abstract = "Experiments by using 2D-2C Particle Image Velocimetry (PIV) were carried out and reported concerning the flow field past a generic car body (modified Ahmed body) which is equipped with wheels and wheel-arches. The Reynolds number was chosen to not exceed 2E+5 based on the height of the Ahmed body which makes it possible to investigate the same configuration by means of Large Eddy Simulation (LES). The wheels were rotating but the ground was stationary. The wheel-ground contact was realized by means of small rectangular openings below the wheels in the ground plane in which the wheels were immersed. The transition contour of the immersed wheels and the ground, as well as the rectangular openings below the wheels were properly sealed to prevent parasite flow and to provide well defined boundary conditions for an upcoming LES investigation.The flow field was measured in several planes with normal vectors pointing towards the directions normal to the free stream. Statistical characteristics of the flow are provided and discussed.",
keywords = "Ahmed body, PIV, Vehicle aerodynamics, Wheel",
author = "Andr{\'a}s Guly{\'a}s and {\'A}gnes Bodor and Tamas Regert and I. J{\'a}nosi",
year = "2013",
month = "10",
doi = "10.1016/j.ijheatfluidflow.2013.05.012",
language = "English",
volume = "43",
pages = "220--232",
journal = "International Journal of Heat and Fluid Flow",
issn = "0142-727X",
publisher = "Elsevier",

}

TY - JOUR

T1 - PIV measurement of the flow past a generic car body with wheels at LES applicable Reynolds number

AU - Gulyás, András

AU - Bodor, Ágnes

AU - Regert, Tamas

AU - Jánosi, I.

PY - 2013/10

Y1 - 2013/10

N2 - Experiments by using 2D-2C Particle Image Velocimetry (PIV) were carried out and reported concerning the flow field past a generic car body (modified Ahmed body) which is equipped with wheels and wheel-arches. The Reynolds number was chosen to not exceed 2E+5 based on the height of the Ahmed body which makes it possible to investigate the same configuration by means of Large Eddy Simulation (LES). The wheels were rotating but the ground was stationary. The wheel-ground contact was realized by means of small rectangular openings below the wheels in the ground plane in which the wheels were immersed. The transition contour of the immersed wheels and the ground, as well as the rectangular openings below the wheels were properly sealed to prevent parasite flow and to provide well defined boundary conditions for an upcoming LES investigation.The flow field was measured in several planes with normal vectors pointing towards the directions normal to the free stream. Statistical characteristics of the flow are provided and discussed.

AB - Experiments by using 2D-2C Particle Image Velocimetry (PIV) were carried out and reported concerning the flow field past a generic car body (modified Ahmed body) which is equipped with wheels and wheel-arches. The Reynolds number was chosen to not exceed 2E+5 based on the height of the Ahmed body which makes it possible to investigate the same configuration by means of Large Eddy Simulation (LES). The wheels were rotating but the ground was stationary. The wheel-ground contact was realized by means of small rectangular openings below the wheels in the ground plane in which the wheels were immersed. The transition contour of the immersed wheels and the ground, as well as the rectangular openings below the wheels were properly sealed to prevent parasite flow and to provide well defined boundary conditions for an upcoming LES investigation.The flow field was measured in several planes with normal vectors pointing towards the directions normal to the free stream. Statistical characteristics of the flow are provided and discussed.

KW - Ahmed body

KW - PIV

KW - Vehicle aerodynamics

KW - Wheel

UR - http://www.scopus.com/inward/record.url?scp=84885858437&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84885858437&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatfluidflow.2013.05.012

DO - 10.1016/j.ijheatfluidflow.2013.05.012

M3 - Article

VL - 43

SP - 220

EP - 232

JO - International Journal of Heat and Fluid Flow

JF - International Journal of Heat and Fluid Flow

SN - 0142-727X

ER -