Analysis of cyclist`s drag on the aero position using numerical simulations and analytical procedures: A case study
Background: Resistance acting on a cyclist is a major concern among the cycling fraternity. Most of the testing methods require previous training or expensive equipment and time-consuming set-ups. By contrast, analytical procedures are more affordable and numerical simulations are perfect for manipulating and controlling inputs. The aim of this case study was to compare the drag of a cyclist in the aero position as measured using numerical simulation and analytical procedures. Methods: An elite male cyclist (65 kg in mass and 1.72 m in height) volunteered to take part in this research. The cyclist was wearing his competition gear, helmet and bicycle. A three-dimensional model of the bicycle and cyclist in the aero position was obtained to run the numerical simulations. Computational fluid dynamics (CFD) and a set of analytical procedures were carried out to assess drag, frontal area and drag coefficient, between 1 m/s and 22 m/s, with increments of 1 m/s. The t-test paired samples and linear regression were selected to compare, correlate and assess the methods agreement. Results: No significant differences (t = 2.826; p = 0.275) between CFD and analytical procedures were found. The linear regression showed a very high adjustment for drag (R2 = 0.995; p < 0.001). However, the drag values obtained by the analytical procedures seemed to be overestimated, even though without effect (d = 0.11). Conclusions: These findings suggest that drag might be assessed using both a set of analytical procedures and CFD.
© Copyright 2020 International Journal of Environmental Research and Public Health. MDPI. Kaikki oikeudet pidätetään.
Aiheet: | pyöräily asento urheiluvälineet vastus aerodynamiikka simulointi menetelmä tutkimusmenetelmä biomekaniikka analyysi |
---|---|
Aihealueet: | kestävyys urheilu tekniset ja luonnontieteet |
DOI: | 10.3390/ijerph17103430 |
Julkaisussa: | International Journal of Environmental Research and Public Health |
Julkaistu: |
2020
|
Vuosikerta: | 17 |
Numero: | 10 |
Sivuja: | 3430 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |