Abstract
In this chapter the analysis and results from the freight aerodynamic load experiments are discussed. Results are presented in terms of the open air (Sect. 7.1) and crosswind (Sect. 7.2) test sections. Firstly a series of individual pressure coefficient time histories are analysed to assess the stability of the on-board data logger system in relation to each test section (Sects. 7.1.1 and 7.2.1). Mean ensemble pressure coefficients are calculated for each pressure tap. The analysis is split into a series of individual container surfaces, presented in Sects. 7.1.2 and 7.2.2. Aerodynamic load coefficients are calculated by discrete integration of mean pressure coefficients across the container surface. The results are analysed to assess the influence of container loading efficiency on aerodynamic load magnitudes and compared with previous freight studies in Sects. 7.1.3 and 7.2.3. A discussion of Reynolds number effects and the influencing factors on uncertainty are presented in Sect. 7.3. Finally general conclusions are drawn in Sect. 7.3.3.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Baker, C., and M. Sterling. 2009. Aerodynamic forces on multiple unit trains in cross winds. Journal of Fluids Engineering 131: 101–103.
Beagles, A., and D. Fletcher. 2013. The aerodynamics of freight; approaches to save fuel by optimising the utilisation of container trains. Journal of Rail and Rapid Transit pp. 1–9.
Castro, I., and A. Robins. 1977. The flow around a surface-mounted cube in uniform and turbulent streams. Journal of Fluid Mechanics 79(02): 307–335.
Cooper, K. 1993. Bluff-body aerodynamics as applied to vehicles. Journal of Wind Engineering and Industrial Aerodynamics 49(1–3): 1–21.
Dorigatti, F. (2013). Rail vehicles in crosswinds: analysis of steady and unsteady aerodynamic effects through static and moving model tests. Ph.D. thesis, University of Birmingham.
Hemida, H., and C. Baker. 2010. Large-eddy simulation of the flow around a freight wagon subjected to a crosswind. Computers and Fluids 39(10): 1944–1956.
Quinn, A., M. Sterling, A. Robertson, and C. Baker. 2007. An investigation of the wind-induced rolling moment on a commercial vehicle in the atmospheric boundary layer. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 221(11): 1367–1379.
RSSB. 2009. Resistance of Railway Vehicles to Roll-Over in Gales, Railway Group Standard GM/RT 2142. Technical report, Rail Safety and Standards Board Limited, London.
RSSB. 2012. Investigation of freight vehicle aerodynamic performance in accordance with GM/RT 2142 Resistance of Railway Vehicles to Roll-over in Gales. Technical report, Rail Safety and Standards Board Limited, London.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this chapter
Cite this chapter
Soper, D. (2016). Aerodynamic Load Analysis, Results and Discussion. In: The Aerodynamics of a Container Freight Train. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-33279-6_7
Download citation
DOI: https://doi.org/10.1007/978-3-319-33279-6_7
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-33277-2
Online ISBN: 978-3-319-33279-6
eBook Packages: EngineeringEngineering (R0)