Results 31 to 40 of about 2,053,013 (165)

Mapping of Meteorological Observations over the Island of Ireland to Enhance the Understanding and Prediction of Rain Erosion in Wind Turbine Blades

open access: yesEnergies, 2021
Leading edge erosion is becoming increasingly important as wind turbine size and rainfall are predicted to increase. Understanding environmental conditions is key for laboratory testing, maintenance schedules and lifetime estimations to be improved ...
James W. K. Nash   +2 more
doaj   +1 more source

Leading-edge flow criticality as a governing factor in leading-edge-vortex initiation in unsteady airfoil flows [PDF]

open access: yes, 2017
A leading-edge suction parameter (LESP) that is derived from potential flow theory as a measure of suction at the airfoil leading edge is used to study initiation of leading-edge vortex (LEV) formation in this article.
Edwards, Jack R.   +4 more
core   +1 more source

Reduced dimension modeling of leading edge turbulent interaction noise [PDF]

open access: yes, 2014
A computational aeroacoustics approach is used to model the effects of real airfoil geometry on leading edge turbulent interaction noise for symmetric airfoils at zero angle of attack.
Bailly C.   +5 more
core   +1 more source

Image-Based Feature Extraction Technique for Inclined Crack Quantification Using Pulsed Eddy Current

open access: yesChinese Journal of Mechanical Engineering, 2019
Existing eddy current non-destructive testing (NDT) techniques generally do not consider the inclination angle of inclined cracks, which potentially harms a larger region of a tested structure.
Faris Nafiah   +4 more
doaj   +1 more source

Long‐lived larch clones may conserve adaptations that could restrict treeline migration in northern Siberia

open access: yesEcology and Evolution, 2020
The occurrence of refugia beyond the arctic treeline and genetic adaptation therein play a crucial role of largely unknown effect size. While refugia have potential for rapidly colonizing the tundra under global warming, the taxa may be maladapted to the
Stefan Kruse   +3 more
doaj   +1 more source

Non‐destructive and contactless defect detection inside leading edge coatings for wind turbine blades using mid‐infrared optical coherence tomography

open access: yesWind Energy, 2023
Leading edge erosion of wind turbine blades is one of the most critical issues in wind energy production, resulting in lower efficiency, as well as increased maintenance costs and downtime.
Christian Rosenberg Petersen   +5 more
doaj   +1 more source

Methodology for the energetic characterisation of rain erosion on wind turbine blades using meteorological data: A case study for The Netherlands

open access: yesWind Energy, 2021
Rain erosion on the leading edge of wind turbine blades is an intricate engineering challenge for the wind industry. Based on an energetic approach, this work proposes a methodology to characterise the erosion capacity of the raindrop impacts onto the ...
Luis Bartolomé, Julie Teuwen
doaj   +1 more source

Superhydrophobic Coatings for Corrosion Protection of Stainless Steel

open access: yesAerospace, 2023
Corrosion is a persistent challenge in the aviation industry, affecting the safety, performance, and maintenance costs of aircraft. While composite materials have gained widespread use due to their lightweight properties and corrosion resistance, certain
Filomena Piscitelli, Annalisa Volpe
doaj   +1 more source

Airplane wing leading edge variable camber flap [PDF]

open access: yes, 1980
The invention and design of an aerodynamic high lift device which provided a solution to an aircraft performance problem are described. The performance problem of converting a high speed cruise airfoil into a low speed aerodynamic shape that would ...
Cole, J. B.
core   +1 more source

Prandtl–Batchelor flow past a flat plate with a forward-facing flap [PDF]

open access: yes, 1984
Two-dimensional steady inviscid flow past an inclined flat plate with a forward-facing flap attached to the rear edge is considered for the case when a vortex sheet separates from the leading edge of the flat plate and reattaches at the leading edge of ...
Saffman, P. G., Tanveer, S.
core   +1 more source

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