Blade tip vortex measurements on actively twisted rotor blades
Sign Up to like & getrecommendations! Published in 2017 at "Experiments in Fluids"
DOI: 10.1007/s00348-017-2312-3
Abstract: Active rotor control concepts, such as active twist actuation, have the potential to effectively reduce the noise and vibrations of helicopter rotors. The present study focuses on the experimental investigation of active twist for the… read more here.
Keywords: vortex; rotor; blade tip; active twist ... See more keywords
An in-depth quantitative analysis of wind turbine blade tip wake flow based on the lattice Boltzmann method
Sign Up to like & getrecommendations! Published in 2020 at "Environmental Science and Pollution Research"
DOI: 10.1007/s11356-020-09511-8
Abstract: With the continuous increase in the total quantity and quality of wind energy used by society, the aerodynamic complexity of wind turbine impellers has also gradually increased. This requires a more accurate analysis and understanding… read more here.
Keywords: wake; wind turbine; blade tip; flow ... See more keywords
Multi-blade shedding in turbines with different casing and blade tip architectures
Sign Up to like & getrecommendations! Published in 2019 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2019.02.025
Abstract: Abstract A shaft failure in a gas turbine engine results in the decoupling of the turbine and the compressor. The turbine continues extracting work from the air flow causing the acceleration of the free-running turbine… read more here.
Keywords: blade; blade tip; turbine; different casing ... See more keywords
Investigation of high-speed abrasion behavior of an abradable seal rubber in aero-engine fan application
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2017.02.019
Abstract: Abstract Abradable seal rubber has been widely used in aero-engine fans to improve their efficiency by reducing the clearance between rotating and stationary components. To investigate the high-speed scraping behavior between a vulcanized silicone rubber… read more here.
Keywords: abradable seal; seal rubber; blade tip; tip velocity ... See more keywords
Towards desensitization of gas turbine performance to tip Clearance: Design optimization and engine analysis
Sign Up to like & getrecommendations! Published in 2021 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2021.114575
Abstract: Abstract Increased scrutiny on aviation’s environmental footprint has precipitated a dramatic increase in gas turbine technology development, with a focus on engine performance improvements and the reduction of noise and emissions. In a somewhat limited… read more here.
Keywords: optimization; blade tip; performance; turbine ... See more keywords
Interpolation method for wideband signal reconstruction based on blade tip timing measurement
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2021.109168
Abstract: Abstract Blade tip timing (BTT) technique has become a promising way of online damage diagnosis for compressor and turbine blades by monitoring their vibrations. However, there are some disadvantages in previous algorithms for BTT signals,… read more here.
Keywords: tip timing; blade tip; wideband signal; signal reconstruction ... See more keywords
Active Control of Wind Turbines Through Varying Blade Tip Sweep
Sign Up to like & getrecommendations! Published in 2019 at "Renewable Energy"
DOI: 10.1016/j.renene.2018.07.022
Abstract: Abstract In this research work an introduction to the concept of an actively controlled horizontal axis wind turbine through varying blade tip sweep, is presented. The concept refers to variable tip swept rotor blades, that… read more here.
Keywords: blade tip; tip; varying blade; wind ... See more keywords
A novel method for the determination of the change in blade tip timing probe sensing position due to steady movements
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2019.02.016
Abstract: Abstract The correlation of blade tip timing (BTT) measurements against strain gauge (SG) measurements and finite element (FE) predictions includes a number of uncertainties. One of the main ones is the steady movement of the… read more here.
Keywords: novel method; tip timing; blade tip; steady movements ... See more keywords
Constant speed tip deflection determination using the instantaneous phase of blade tip timing data
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.107151
Abstract: Abstract Blade Tip Timing (BTT) is a non-intrusive measurement technique that can be used to estimate the vibration characteristics of rotor blades during turbomachine operation. BTT uses proximity probes mounted into the turbomachine casing to… read more here.
Keywords: rotor; tip deflection; tip timing; blade tip ... See more keywords
Five dimensional movement measurement method for rotating blade based on blade tip timing measuring point position tracking
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107898
Abstract: Abstract As a non-intrusive blade vibration measurement technology, Blade Tip Timing (BTT) has been widely studied and developed in recent years. However, there are still many potential uncertainties in BTT technique, which reduce the correlation… read more here.
Keywords: blade; measuring point; position; blade tip ... See more keywords
Study on flow characteristics of leakage in the last stage inner blade tip clearance of steam turbine
Sign Up to like & getrecommendations! Published in 2023 at "AIP Advances"
DOI: 10.1063/5.0153264
Abstract: Internal steam leakage in steam turbines from the high-pressure side to the low-pressure side through clearances causes loss, resulting in reduced efficiency and potentially compromising the safe operation of the turbine. Therefore, a comprehensive understanding… read more here.
Keywords: clearance; steam; blade tip; flow characteristics ... See more keywords