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Proceedings

Measurement and Visualization of Airflow through Sports Textiles

1
Brownlie Management Ltd., West Vancouver, BC V7W1R7, Canada
2
Nike Inc., Beaverton, OR 97005, USA
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Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
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Jeff Allison Design, Lake Oswego, OR 97035, USA
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Department of Mechanical and Materials Engineering, Queen’s University, Kingston, ON K7L 3N6, Canada
*
Author to whom correspondence should be addressed.
Presented at the 13th Conference of the International Sports Engineering Association, Online, 22–26 June 2020.
Proceedings 2020, 49(1), 21; https://doi.org/10.3390/proceedings2020049021
Published: 15 June 2020
In marathon running, maintenance of body temperature is critical for peak performance. Race apparel should maximize ventilation yet current fabric permeability standards are based on airflow rates that are not generated during running. A novel flow measurement device was used to measure airflow through textiles and the effects of fabric hole size, coverage area and standoff distance between a simulated torso and fabric at velocities of 3.3, 5.3 and 10 m.s−1. Fluorescent dye injection in a tow tank or flume permitted visualization of flow through fabrics. Ventilation is constrained by the low flow velocity in the stagnation area over the chest of an athlete, with freestream airflows of 3.3 and 10 m.s−1 reduced to 1.31 +/− 0.10 m/s (39.6%) and 3.51 +/− 0.27 m.s−1 (35.0%), respectively at a yaw angle of 20°. The initial low flow velocity precludes improvements in airflow despite changes in the standoff distance, fabric hole size or coverage area.
Keywords: air flow; ventilation; sports textiles; marathon racing; thermoregulation air flow; ventilation; sports textiles; marathon racing; thermoregulation
MDPI and ACS Style

Brownlie, L.; Bailey, C.; Carbo, J.; Judelson, D.; Ostafichuk, P.; Allison, J.; Rival, D. Measurement and Visualization of Airflow through Sports Textiles. Proceedings 2020, 49, 21. https://doi.org/10.3390/proceedings2020049021

AMA Style

Brownlie L, Bailey C, Carbo J, Judelson D, Ostafichuk P, Allison J, Rival D. Measurement and Visualization of Airflow through Sports Textiles. Proceedings. 2020; 49(1):21. https://doi.org/10.3390/proceedings2020049021

Chicago/Turabian Style

Brownlie, Len; Bailey, Collin; Carbo, Jorge; Judelson, Dan; Ostafichuk, Peter; Allison, Jeff; Rival, David. 2020. "Measurement and Visualization of Airflow through Sports Textiles" Proceedings 49, no. 1: 21. https://doi.org/10.3390/proceedings2020049021

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