An experimental approach to analysing rain droplet impingement on wind turbine blade materials

Craig Siddons, Calum Macleod, Liu Yang, Margaret Stack

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Leading edge erosion of wind turbine blades is an important issue within the industry and has been found to have a substantial impact on the annual energy output of generators. This forces operators to make blade repair a necessity, adding to the operation and maintenance costs of a project. A wind turbine’s tip speed can in some cases have an upper limit based on the erosion exhibited on the leading edge. This paper explores the variables of rainfall rate and impact velocity of the impinging droplets in an attempt to explore the recovery time of the tri-axial composite material used. It is shown that an increase in impact velocity results in a higher mass loss than an increase in the rainflow rate. Analysis using a scanning electron microscope reveals that pin holes in the laminate surface are exploited by the droplets, acting as initiation point for erosion of the composite. Overall the results suggest that the tip speed of the wind turbine blade is of greater importance when compared to the relevant rainfall conditions as to where the wind turbine is situated.

Conference

ConferenceEWEA 2015 Annual Event
CountryFrance
CityParis
Period17/11/1520/11/15

Fingerprint

Wind turbines
Turbomachine blades
Rain
Erosion
Composite materials
Laminates
Repair
Electron microscopes
Scanning
Recovery
Costs
Industry

Keywords

  • rain erosion
  • composites
  • wind turbine blades
  • leading edge erosion

Cite this

Siddons, C., Macleod, C., Yang, L., & Stack, M. (2015). An experimental approach to analysing rain droplet impingement on wind turbine blade materials. Paper presented at EWEA 2015 Annual Event, Paris, France.
Siddons, Craig ; Macleod, Calum ; Yang, Liu ; Stack, Margaret. / An experimental approach to analysing rain droplet impingement on wind turbine blade materials. Paper presented at EWEA 2015 Annual Event, Paris, France.
@conference{36b887a1be6144369e7281776a9c098c,
title = "An experimental approach to analysing rain droplet impingement on wind turbine blade materials",
abstract = "Leading edge erosion of wind turbine blades is an important issue within the industry and has been found to have a substantial impact on the annual energy output of generators. This forces operators to make blade repair a necessity, adding to the operation and maintenance costs of a project. A wind turbine’s tip speed can in some cases have an upper limit based on the erosion exhibited on the leading edge. This paper explores the variables of rainfall rate and impact velocity of the impinging droplets in an attempt to explore the recovery time of the tri-axial composite material used. It is shown that an increase in impact velocity results in a higher mass loss than an increase in the rainflow rate. Analysis using a scanning electron microscope reveals that pin holes in the laminate surface are exploited by the droplets, acting as initiation point for erosion of the composite. Overall the results suggest that the tip speed of the wind turbine blade is of greater importance when compared to the relevant rainfall conditions as to where the wind turbine is situated.",
keywords = "rain erosion, composites, wind turbine blades, leading edge erosion",
author = "Craig Siddons and Calum Macleod and Liu Yang and Margaret Stack",
year = "2015",
month = "11",
day = "17",
language = "English",
note = "EWEA 2015 Annual Event ; Conference date: 17-11-2015 Through 20-11-2015",

}

Siddons, C, Macleod, C, Yang, L & Stack, M 2015, 'An experimental approach to analysing rain droplet impingement on wind turbine blade materials' Paper presented at EWEA 2015 Annual Event, Paris, France, 17/11/15 - 20/11/15, .

An experimental approach to analysing rain droplet impingement on wind turbine blade materials. / Siddons, Craig; Macleod, Calum; Yang, Liu; Stack, Margaret.

2015. Paper presented at EWEA 2015 Annual Event, Paris, France.

Research output: Contribution to conferencePaper

TY - CONF

T1 - An experimental approach to analysing rain droplet impingement on wind turbine blade materials

AU - Siddons, Craig

AU - Macleod, Calum

AU - Yang, Liu

AU - Stack, Margaret

PY - 2015/11/17

Y1 - 2015/11/17

N2 - Leading edge erosion of wind turbine blades is an important issue within the industry and has been found to have a substantial impact on the annual energy output of generators. This forces operators to make blade repair a necessity, adding to the operation and maintenance costs of a project. A wind turbine’s tip speed can in some cases have an upper limit based on the erosion exhibited on the leading edge. This paper explores the variables of rainfall rate and impact velocity of the impinging droplets in an attempt to explore the recovery time of the tri-axial composite material used. It is shown that an increase in impact velocity results in a higher mass loss than an increase in the rainflow rate. Analysis using a scanning electron microscope reveals that pin holes in the laminate surface are exploited by the droplets, acting as initiation point for erosion of the composite. Overall the results suggest that the tip speed of the wind turbine blade is of greater importance when compared to the relevant rainfall conditions as to where the wind turbine is situated.

AB - Leading edge erosion of wind turbine blades is an important issue within the industry and has been found to have a substantial impact on the annual energy output of generators. This forces operators to make blade repair a necessity, adding to the operation and maintenance costs of a project. A wind turbine’s tip speed can in some cases have an upper limit based on the erosion exhibited on the leading edge. This paper explores the variables of rainfall rate and impact velocity of the impinging droplets in an attempt to explore the recovery time of the tri-axial composite material used. It is shown that an increase in impact velocity results in a higher mass loss than an increase in the rainflow rate. Analysis using a scanning electron microscope reveals that pin holes in the laminate surface are exploited by the droplets, acting as initiation point for erosion of the composite. Overall the results suggest that the tip speed of the wind turbine blade is of greater importance when compared to the relevant rainfall conditions as to where the wind turbine is situated.

KW - rain erosion

KW - composites

KW - wind turbine blades

KW - leading edge erosion

UR - http://www.ewea.org/annual2015/

M3 - Paper

ER -

Siddons C, Macleod C, Yang L, Stack M. An experimental approach to analysing rain droplet impingement on wind turbine blade materials. 2015. Paper presented at EWEA 2015 Annual Event, Paris, France.