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Advisor(s)
Abstract(s)
The aim of this study was to assess and compare by numerical simulations and
analytical models the resistive forces, mechanical power, energy cost and velocity using two
different types of road helmets (standard vs aero road helmet). An elite cyclist was scanned on
the racing bicycle, wearing his competition gear and helmets. Numerical simulations by
Computational Fluid Dynamics were carried-out at 11.11 m/s (40 km/h) and 20.83 m/s (75
km/h) to extract the drag force. The mechanical power and energy cost were estimated by
analytical procedures. The drag forces were between 9.93 N and 66.96 N across the selected
speeds and helmets. The power to overcome drag were 182.19 W and 1121.40 W. The total power
lower and higher values were 271.05 W and 1558.02 W. The energy cost estimation was between
106.89 J/m and 381.40 J/m across the different speeds and helmets. The standard helmet
imposed higher drag and demanded more power.
Description
Keywords
Cycling Helmets CFD Power Energy cost
Citation
Forte, Pedro; Marinho, D.A.; Barbosa, Tiago M.; Morais, J.E. (2021). Estimation of an elite road cyclist resistive forces and performance wearing standard and aero helmets: an analytical procedure and numerical simulations approach. European Journal of Human Movement. ISSN 2386-4095. 46, p. 4-15
Publisher
Universidade da Extremadura