In-situ blade strain measurements and fatigue analysis of a cross-flow turbine operating in a tidal flow

Bichanich, Mason; Bharath, Aidan; O’Byrne, Patrick; Monahan, Michael; Ross, Hannah; Raye, Robert; Nichols, Casey; Candon, Charles; Wosnik, Martin

doi:10.1016/j.renene.2024.121977

In-situ blade strain measurements and fatigue analysis of a cross-flow turbine operating in a tidal flow

Journal Article · Wed Nov 27 23:00:00 EST 2024 · Renewable Energy

DOI:https://doi.org/10.1016/j.renene.2024.121977· OSTI ID:2479440

^[1]; ^[2]; O’Byrne, Patrick ^[3]; Monahan, Michael ^[3]; ^[2]; ^[2]; ^[2]; Candon, Charles ^[2]; ^[3]

University of New Hampshire, Durham, NH (United States); University of New Hampshire
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
University of New Hampshire, Durham, NH (United States)

Cross-flow turbines (CFTs) are inherently unsteady devices with regards to operating principle and loading. By improving our understanding of the dynamic loading on these turbines, we hope to better inform CFT design, improve survivability, and reduce overall costs. The University of New Hampshire (UNH) and the National Renewable Energy Laboratory (NREL) collaborated on a project to instrument and test a four-bladed New Energy Corp. vertical axis cross-flow turbine in a real tidal flow. One blade from the 3.2 m diameter x 1.7 m height turbine was instrumented with eight full-bridge strain gauges along the span of the blade. The turbine was then deployed at the UNH-Atlantic Marine Energy Center (AMEC) Tidal Energy Test Site in Portsmouth, NH. Time-synchronized measurements of blade strain, inflow, thrust, rotational speed, and electrical output were obtained to characterize blade loading under various conditions. Here, the blade strain was examined to assess the dynamic loading and conduct a fatigue analysis on the device.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Water Power Technologies Office

Grant/Contract Number:: EE0009450; AC36-08GO28308

OSTI ID:: 2479440

Alternate ID(s):: OSTI ID: 2483251

Journal Information:: Renewable Energy, Journal Name: Renewable Energy Vol. 239; ISSN 0960-1481

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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In-situ blade strain measurements and fatigue analysis of a cross-flow turbine operating in a tidal flow

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