Gaylard, A. P., Kabanovs, A., Jilesen, J., Kirwan, Kerry and Lockerby, Duncan A. (2017) Simulation of rear surface contamination for a simple bluff body. Journal of Wind Engineering and Industrial Aerodynamics, 165 . pp. 13-22. doi:10.1016/j.jweia.2017.02.019 ISSN 0167-6105.

Preview	PDF WRAP_1-s2.0-S0167610516300319-main.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2242Kb) | Preview
	PDF WRAP_1290155-wmg-280217-gaylard_-_kabanovs_-_jilesen_-_kirwan_-_lockerby_-_simulation_of_rear_surface_contamination_for_a_simple_bluff_body.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (1819Kb)

Request Changes to record.

Abstract

Predicting the accumulation of material on the rear surfaces of square-backed cars is important to vehicle manufacturers, as this progressively compromises rear vision, vehicle visibility and aesthetics. It also reduces the effectiveness of rear mounted cameras. Here, this problem is represented by a simple bluff body with a single sprayer mounted centrally under its rear trailing edge.

A Very Large Eddy Simulation (VLES) solver is used to simulate both the aerodynamics of the body and deposition of contaminant. Aerodynamic drag and lift coefficients were predicted to within +1.3% and −4.2% of their experimental values, respectively. Wake topology was also correctly captured, resulting in a credible prediction of the rear surface deposition pattern.

Contaminant deposition is mainly driven by the lower part of the wake ring vortex, which advects material back onto the rear surface. This leads to a maximum below the rear stagnation point and an association with regions of higher base pressure.

The accumulation of mass is linear with time; the relative distribution changing little as the simulation progresses, implying that shorter simulations can be compared to longer experiments. Further, the rate of accumulation quickly reaches a settled mean value, suggesting utility as a metric for assessing different vehicles.

Item Type:	Journal Article
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Automobiles -- Design and construction, Automobiles -- Safety measures, Automobiles -- Aerodynamics
Journal or Publication Title:	Journal of Wind Engineering and Industrial Aerodynamics
Publisher:	Elsevier
ISSN:	0167-6105
Official Date:	June 2017
Dates:	Date Event June 2017 Published 4 March 2017 Available 15 February 2017 Accepted 27 January 2016 Submitted
Volume:	165
Page Range:	pp. 13-22
DOI:	10.1016/j.jweia.2017.02.019
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	9 March 2017
Date of first compliant Open Access:	9 March 2017
Funder:	Engineering and Physical Sciences Research Council (EPSRC), Jaguar Land Rover (Firm)
Grant number:	EP/K014102/1, EP/N016602/1, EP/K038664/1, EP/I011927/1 (EPSRC)
Adapted As:
Version or Related Resource:	http://wrap.warwick.ac.uk/86272/
Related URLs:	Publisher

Request changes or add full text files to a record

Repository staff actions (login required)

View Item

Downloads