Preprint Article Version 1 This version is not peer-reviewed

Validity and Reliability of Wind Speed Calculated by Notio in Comparison with a Hot-Wire Anemometer

Version 1 : Received: 5 November 2024 / Approved: 5 November 2024 / Online: 5 November 2024 (13:22:30 CET)

How to cite: Ordiñana-Pérez, M.; Mateo, M.; Roldan, A.; Barranco-Gil, D.; Zabala, M.; Blasco-Lafarga, C. Validity and Reliability of Wind Speed Calculated by Notio in Comparison with a Hot-Wire Anemometer. Preprints 2024, 2024110300. https://doi.org/10.20944/preprints202411.0300.v1 Ordiñana-Pérez, M.; Mateo, M.; Roldan, A.; Barranco-Gil, D.; Zabala, M.; Blasco-Lafarga, C. Validity and Reliability of Wind Speed Calculated by Notio in Comparison with a Hot-Wire Anemometer. Preprints 2024, 2024110300. https://doi.org/10.20944/preprints202411.0300.v1

Abstract

(1) Background: Notio calculates coefficient of drag area (CDA) considering dynamic pressure data calculated by an integrated Pitot-static tube. Therefore, this study aimed to evaluate the validity and reliability of Pitot-static tube calculations through wind speed (WS) data, against a hot-wire anemometer (HWA). (2) A total of 60 recordings were made, lasting 30 seconds each, in a closed-circuit wind tunnel at 4 different WS (≈30 to ≈60km/h), and at five different yaw angles (0º to 20º). (3) Results: Notio showed WS 6.44% higher than HWA. The calibration process recommended by the Notio manufacturer reduced the differences to a non-significant 0.76%. Comparison of the WS of Notio calibrated and HWA only showed significant differences in the WS group of ≈60 km/h. There were no significant differences in the comparison of yaw angles groups. The reliability of Notio was worse than that of the HWA. (4) Conclusions: Notio calibrated at a speed close to its use, allows reliable and accurate calculation of WS over a wide range of yaw angles under controlled wind tunnel conditions without the presence of a cyclist and bike. However, due to the influence of WS on aerodynamic drag, small errors in WS could translate into considerable values of CDA for cycling performance.

Keywords

CDA; cycling; Pitot-static tube; reliability; validity; wind tunnel

Subject

Engineering, Other

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.