Results 321 to 330 of about 619,388 (381)
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2019
Abstract In an electric power station, seven turbine blades out of 112 broke or cracked within 8 to 14 months after commencement of operation. The blades in question were all located on the last running wheel in the low pressure section of a 35,000 kW high pressure condensing turbine.
Friedrich Karl Naumann, Ferdinand Spies
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Abstract In an electric power station, seven turbine blades out of 112 broke or cracked within 8 to 14 months after commencement of operation. The blades in question were all located on the last running wheel in the low pressure section of a 35,000 kW high pressure condensing turbine.
Friedrich Karl Naumann, Ferdinand Spies
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Görtler instability on a turbine blade
International Journal of Thermal Sciences, 2021Abstract Gortler instability studies are conducted considering a more realistic geometry represented by the pressure side of a turbine blade. The creation and maintenance of Gortler vortices are observed in regions where the centrifugal effect exists but decays. The weak aspect of the instability leads to the selection of the preferred wave number to
Josuel Kruppa Rogenski +3 more
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Non-linear dynamic analysis of a wind turbine blade
Zhongguó gongchéng xuékan, 2019Wind turbine blades’ dynamic behavior must be well investigated during the design process in order to avoid resonance. Modal analysis and nonlinear dynamic analysis of a rotating wind turbine blade are presented in this paper to study the effects of ...
R. Maktouf +4 more
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Turbine Blade Cooling: The Blade Temperature Distribution
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2006Air cooling of high-temperature gas turbines is a standard practice; the air first cools the blading by internal convection and then by external film cooling, after ejection through holes and slots in the blade surface. In some ‘conventional’ analyses of turbine blade cooling, a ‘standard blade’ is invoked, which has a uniform blade temperature equal ...
L Torbidoni, J. H. Horlock
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Journal of the Institution of Electrical Engineers, 1923
The paper is a review of the present position of the subject of steam turbine blading. Section (1) describes the causes and effects of corrosion and erosion. The most important materials in use are enumerated and compared. Section (2) deals with the form of the blade passage in impulse and reaction machines, and with the energy losses occurring in the ...
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The paper is a review of the present position of the subject of steam turbine blading. Section (1) describes the causes and effects of corrosion and erosion. The most important materials in use are enumerated and compared. Section (2) deals with the form of the blade passage in impulse and reaction machines, and with the energy losses occurring in the ...
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A framework for isogeometric‐analysis‐based optimization of wind turbine blade structures
Wind Energy, 2018Early-stage wind turbine blade design usually relies heavily on low-fidelity structural models; high-fidelity, finite-element-based structural analyses are reserved for later design stages becauseoftheircomplexworkflowsandhighcomputationalexpense ...
Austin J. Herrema, J. Kiendl, M. Hsu
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On Buckling Optimization of a Wind Turbine Blade
2008The design of composite structures such as wind turbine blades is a challenging problem due to the need for pushing the material utilization to the limit in order to obtain light and cost effective structures. As a consequence of the minimum material design strategy the structures are becoming thin-walled, such that buckling problems must be addressed,
Lund, Erik, Johansen, Leon Stenholt
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A Conditional Convolutional Autoencoder-Based Method for Monitoring Wind Turbine Blade Breakages
IEEE Transactions on Industrial Informatics, 2021Luoxiao Yang, Zijun Zhang
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Aeroelastic analysis of a wind turbine blade using the harmonic balance method
, 2018Most current wind turbine aeroelastic codes rely on the blade element momentum method with empirical corrections to compute aerodynamic forces on the wind turbine blades.
Jason C. Howison +2 more
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Wear, 2002
The first-stage blades of a gas turbine had suffered a severe deterioration after around 10 500 h service. The expected service life was 40 000 h. Failure analysis (visual observations, studies by optical microscopy, scanning electron microscopy (SEM), SEM back-scattered electron (SEM-BSE), EDX, X-ray diffraction (XRD) and dimensional metrology) has ...
Jose A. Rodriguez +2 more
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The first-stage blades of a gas turbine had suffered a severe deterioration after around 10 500 h service. The expected service life was 40 000 h. Failure analysis (visual observations, studies by optical microscopy, scanning electron microscopy (SEM), SEM back-scattered electron (SEM-BSE), EDX, X-ray diffraction (XRD) and dimensional metrology) has ...
Jose A. Rodriguez +2 more
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