Rodríguez Rodríguez, ArmandoDiéguez Elizondo, PedroUrroz Unzueta, José CarlosBravo Acha, MikelLópez Rodríguez, José JavierLópez-Amo Sáinz, Manuel2024-10-032024-10-032024Rodriguez, A., Dieguez, P., Urroz, J. C., Bravo, M., Lopez, J., Lopez-Amo, M. (2024). Optical fiber sensor for water velocity measurement in rivers and channels. Scientific reports, 14(1), 1-12. https://doi.org/10.1038/s41598-024-64202-5.2045-232210.1038/s41598-024-64202-5https://academica-e.unavarra.es/handle/2454/51954In this work, optical fiber Bragg grating sensors were used to measure water velocity and examine how it was distributed in open channels. Several types of coatings were incorporated into the design of the sensors to examine their effects on the strain that the fibers experienced as a result of the water flow. Due to their low elastic coefficient, which reduced the hysteresis, the results indicated that the aluminum- and acrylate-coated fibers had the best performance. ANSYS-CFX V2020 R2 software was used to model the strain encountered by the fibers under various flow rates to assess the performance of the FBG sensors. The calculations and actual data exhibited good convergence, demonstrating the accuracy of the FBG sensors in determining water velocity. The study illustrated the usability of the proposal in both scenarios by contrasting its application in rivers and channels.application/pdfeng© The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License.CoatingsElastic coefcientFiber optic sensorsStrainWater velocityinfo:eu-repo/semantics/article2024-10-03info:eu-repo/semantics/openAccess