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A comparison of the wake structures of scale and full-scale pedalling cycling models

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posted on 2023-05-19, 03:35 authored by Crouch, TN, Burton, D, James VenningJames Venning, Thompson, MC, Brown, NAT, Sheridan, J
This paper presents a novel approach to better understand the unsteady aerodynamics associated with a dynamically pedalling cyclist. Using high resolution Particle Image Velocimetry (PIV) in a water channel, the large-scale wake structure is analysed for various phases of the crank cycle of a 1:4.5 scale-model cyclist/bicycle under both static and pedalling conditions. Both quasi-steady and dynamic pedalling leg results are compared with detailed velocity field surveys made in the wake of a full-scale pedalling cyclist mannequin of similar geometry and position in a wind tunnel. A time-averaged and phase-averaged analysis of the various flow regimes that occur throughout the pedal stroke shows good agreement between scale-model and full-scale mannequin investigations. This highlights the robustness of the formation of the primary wake flow structures when subjected to varying Reynolds number, bicycle/rider geometry and quasi-steady/dynamic pedalling conditions.

History

Publication title

Procedia Engineering

Volume

147

Pagination

13-19

ISSN

1877-7058

Department/School

Australian Maritime College

Publisher

Elsevier BV

Place of publication

Netherlands

Rights statement

Copyright 2016 The Authors. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) https://creativecommons.org/licenses/by-nc-nd/4.0/

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in the physical sciences

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