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Aerodynamic Improvement of a Loaded Timber Truck
Technical Paper
2023-01-5000
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
In recent years, there has been an overall reduction in greenhouse emissions in
the European Union (EU); however, that is not the case for the transport
industry where road transports are responsible for more than 70% of all the
transports emissions. Transport by trucks and busses is responsible for a fourth
of these greenhouse emissions, and a significant contributor to the energy
consumption of these vehicles is the aerodynamic drag.
A particular branch of truck transport is the transport of timber by the use of
timber trucks. A significant difference to ordinary trucks is that the load of
the timber truck affects the shape and hence its aerodynamic behavior. In
Europe, these timber trucks travel at speeds of up to 80 km/h. At this speed,
the aerodynamic drag accounts for around 20–30% per ton-km of the fuel
consumption for these vehicles.
In this paper computational fluid dynamics (CFD) is used to investigate and
improve the aerodynamics of a loaded timber truck. Several concepts are
evaluated for high drag regions along the truck. Yaw sweeps are done for the
concepts with large potential to ensure consistent drag reduction. The concepts
are evaluated separately and then combined into three combinations, ranging from
an easy implementable combination to maximum drag reduction, where a 27% to 51%
reduced wind-averaged drag is achieved, respectively.
Authors
Citation
Fattahi, S., Ekman, P., Karlsson, M., and Gårdhagen, R., "Aerodynamic Improvement of a Loaded Timber Truck," SAE Technical Paper 2023-01-5000, 2023, https://doi.org/10.4271/2023-01-5000.Also In
References
- Tagliapietra , S. and Zachmann , G. 2018
- Mathieu , L. 2020 https://www.transportenvironment.org/sites/te/files/publications/2020_02_RechargeEU_trucks_paper.pdf 2020
- Hucho , W.-H. Aerodynamics of Road Vehicles Warrendale, PA Society of Automotive Engineers, Inc. 1998 978-0-7680-0029-0
- Ekman , P. , Gårdhagen , R. , Virdung , T. , and Karlsson , M. Aerodynamics of an Unloaded Timber Truck - A CFD Investigation SAE Technical Paper 2016-01-8022 2016 https://doi.org/10.4271/2016-01-8022
- Johannes , E. , Ekman , P. , Huge-Brodin , M. , and Karlsson , M. Sustainable Timber Transport—Economic Aspects of Aerodynamic Reconfiguration Sustainability 2018 1965 10 10.3390/su10061965
- Garner , G.J. and Cooper , K.R. 1978
- Fattahi , S. , Ekman , P. , and Karlsson , M. Influence of the Timber Shape on the Aerodynamics of a Timber Truck SAE Technical Paper 2021-01-5045 2021 https://doi.org/10.4271/2021-01-5045
- Hariram , A. , Koch , T. , Mårdberg , B. , and Kyncl , J. A Study in Options to Improve Aerodynamic Profile of Heavy-Duty Vehicles in Europe Sustainability 11 19 2019 5519
- Salati , L. , Schito , P. , and Cheli , F. Wind Tunnel Experiment on a Heavy Truck Equipped with Front-Rear Trailer Device Journal of Wind Engineering and Industrial Aerodynamics 171 2017 101 109
- Karlsson , M. , Gårdhagen , R. , Ekman , P. , Söderblom , D. et al. Aerodynamics of Timber Trucks - A Wind Tunnel Investigation SAE Technical Paper 2015-01-1562 2015 https://doi.org/10.4271/2015-01-1562
- Cooper , K. Truck Aerodynamics Reborn - Lessons from the Past SAE Technical Paper 2003-01-3376 2003 https://doi.org/10.4271/2003-01-3376
- Landman , D. , Wood , R. , Seay , W. , and Bledsoe , J. Understanding Practical Limits to Heavy Truck Drag Reduction SAE Int. J. Commer. Veh. 2 2 2010 183 190 https://doi.org/10.4271/2009-01-2890
- McAuliffe , B.R. 10.4224/21275397
- Cooper , K. Wind Tunnel and Track Tests of Class 8 Tractors Pulling Single and Tandem Trailers Fitted with Side Skirts and Boat-tails SAE Int. J. Commer. Veh. 5 1 2012 1 17 https://doi.org/10.4271/2012-01-0104
- Burton , D. , McArthur , D. , Sheridan , J. , and Thompson , M. Contribution of Add-On Components to the Aerodynamic Drag of a Cab-Over Truck-Trailer Combination Vehicle SAE Int. J. Commer. Veh. 6 2 2013 477 485 https://doi.org/10.4271/2013-01-2428
- Surcel , M. , Provencher , Y. , and Michaelsen , J. Fuel Consumption Track Tests for Tractor-Trailer Fuel Saving Technologies SAE Int. J. Commer. Veh. 2 2 2010 191 202 https://doi.org/10.4271/2009-01-2891
- Cooper , K. and Leuschen , J. Model and Full-Scale Wind Tunnel Tests of Second-Generation Aerodynamic Fuel Saving Devices for Tractor-Trailers SAE Technical Paper 2005-01-3512 2005 https://doi.org/10.4271/2005-01-3512
- Hwang , B.G. et al. Reduction of Drag in Heavy Vehicles with Two Different Types of Advanced Side Skirts J. Wind Eng. Ind. Aerodyn. 155 2016 36 46 https://doi.org/10.1016/j.jweia.2016.04.009
- Salati , L. , Cheli , F. , and Schito , P. Heavy Truck Drag Reduction Obtained from Devices Installed on the Trailer SAE Int. J. Commer. Veh. 8 2 2015 747 760 https://doi.org/10.4271/2015-01-2898
- Browand , F. , Radovich , C. , and Boivin , M. Fuel Savings by Means of Flaps Attached to the Base of a Trailer: Field Test Results SAE Technical Paper 2005-01-1016 2005 https://doi.org/10.4271/2005-01-1016
- Kehs , J. , Visser , K. , Grossman , J. , Niemiec , J. et al. A Comparison of Full Scale Aft Cavity Drag Reduction Concepts with Equivalent Wind Tunnel Test Results SAE Int. J. Commer. Veh. 6 2 2013 486 497 https://doi.org/10.4271/2013-01-2429
- SAE International 2012
- CLARK Y https://mselig.ae.illinois.edu/ads/coord/clarky.dat 2020
- European Parliament, Council of the European Union https://eur-lex.europa.eu/legal-content/SV/TXT/?uri=celex%3A31996L0053
- Shih , T.H. , Liou , W.W. , Shabbir , A. , Yang , Z. et al. 1994
- ANSYS Inc. 2018
- Ekman , P. , Gardhagen , R. , Virdung , T. , and Karlsson , M. Aerodynamic Drag Reduction of a Light Truck – From Conceptual Design to Full Scale Road Tests SAE Technical Paper 2016-01-1594 2016 https://doi.org/10.4271/2016-01-1594
- Anbarci , K. , Acikgoz , B. , Aslan , R. , Arslan , O. et al. Development of an Aerodynamic Analysis Methodology for Tractor-Trailer Class Heavy Commercial Vehicles SAE Int. J. Commer. Veh. 6 2 2013 441 452 https://doi.org/10.4271/2013-01-2413