Wind Turbine Blade Surface Roughening and Plastic Emission Due to Leading Edge Erosion: Multiple Impact Modeling Framework
Antonios Tempelis, Leon Mishnaevsky
TL;DR
This paper develops a model to simulate erosion on wind turbine blades and estimates microplastic emissions from blade surface degradation.
Contribution
A novel finite element model for simulating water droplet erosion and estimating microplastic emissions from wind turbine blades.
Findings
The model predicts mass loss and erosion depth evolution based on impact frequency.
Worst-case microplastic emissions from blade erosion are estimated at 340 g per blade per year.
Internal coating flaws accelerate erosion and substrate exposure.
Abstract
This paper presents a multiple water droplet impact finite element model that can be used to simulate high strain rate water droplet erosion processes for various target materials. The model is able to provide predictions for mass loss and the evolution of erosion depth as a function of the number of impacts. This is achieved through a continuum damage mechanics approach coupled with element deletion for the target material. Validation of the model is performed by comparison with water droplet erosion data for PMMA. We apply the model to estimate the emissions of microplastics from wind turbines due to blade erosion. For adverse weather and operational conditions, our worst-case estimate was to the order of 340 g per blade per year. The developed framework is also used to model the effect of flaws in the blade coating on erosion progression. The effect of internal defects (voids) in the…
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Taxonomy
TopicsErosion and Abrasive Machining · Cavitation Phenomena in Pumps · Ultrasound and Cavitation Phenomena