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Related Experiment Video

Updated: Jun 14, 2025

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

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Published on: August 30, 2016

Aerodynamic optimization of athlete posture using virtual skeleton methodology and computational fluid dynamics.

Knut Erik Teigen Giljarhus¹, Fredrik Fang Liland², Lars Morten Bardal²

¹Department of Mechanical and Structural Engineering and Materials Science, University of Stavanger, Stavanger, Norway; NablaFlow AS, Sverdrups gate 27, Stavanger, 4007, Norway.

Journal of Biomechanics

|September 7, 2024

Summary

This study introduces a new method for optimizing athlete posture to reduce aerodynamic drag. The technique achieved a 17% drag reduction in a cyclist

Keywords:

Computational fluid dynamics Cycling Posture optimization Sports aerodynamics Surrogate modelling

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Area of Science:

Sports Science
Biomechanics
Aerodynamics

Background:

Athlete posture significantly influences aerodynamic drag, crucial for performance in many sports.
Existing studies often analyze limited postures, lacking generalized optimization methods.

Purpose of the Study:

To develop and demonstrate a methodology for optimizing athlete posture to minimize aerodynamic drag.
To provide a generalized approach applicable across various sports.

Main Methods:

Combined virtual skeleton methodology for posture adjustment, computational fluid dynamics (CFD) for drag evaluation, and global optimization algorithms.
Parameterized cyclist posture using 6 design variables.

Main Results:

Achieved a 17% reduction in aerodynamic drag for a cyclist's time trial posture compared to the initial position.
Optimization required 41 CFD simulations for convergence.

Conclusions:

The developed methodology offers an accessible approach for posture optimization in sports.
This method can provide valuable insights into the aerodynamic effects of posture in general.