3 years ago

On the effects of crosswinds in tandem aerodynamics: An experimental and computational study

Paul Mannion, Yasin Toparlar, Eoghan Clifford, Magdalena Hajdukiewicz, Thomas Andrianne, Bert Blocken

Publication date: Available online 10 November 2018

Source: European Journal of Mechanics - B/Fluids

Author(s): Paul Mannion, Yasin Toparlar, Eoghan Clifford, Magdalena Hajdukiewicz, Thomas Andrianne, Bert Blocken


Aerodynamics has been an important research aspect in cycling science, with aerodynamic apparel and equipment, athlete postures, and race strategies all taking advantage of scientific aerodynamics knowledge. Crosswinds occur when cyclists travel at a non-zero angle to the direction of the wind. Research into crosswinds has yielded race strategies for able-bodied cyclists such as staggered drafting, and wind conditions are recognised as a key factor to consider for cyclist safety. The impact of crosswinds on tandem para-cyclists is less understood. Within the tandem para-cycling discipline, two athletes compete as a team on a single bicycle with a high degree of flow interaction between both athletes. Wind tunnel experiments and computational fluid dynamics were utilised in this research to investigate the drag and lateral forces at yaw angles between 0°–20°. No single turbulence model was found superior for all yaw angles investigated, with the SST k-ω and k-kl-ω turbulence models providing good results for separate yaw ranges. The individual drag and lateral forces experienced by both athletes and the tandem bicycle were investigated to provide further clarity on the distribution of wind loads for each yaw angle tested, and to aid in identifying potential locations for aerodynamic optimisation. 15°yaw was found to be the critical yaw angle where the maximum drag area of 0.337 m2 was experienced. The lateral force exceeded the drag force by 52.8% at a yaw angle of 20°.

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.