Effect of Rotor Blade Leading Edge Serrations on Fan Noise [PDF]
The Journal of the Acoustical Society of America, 1972 Noise measured from a fan with conventional rotor blading for configurations both with and without a fan shroud plus inlet is compared with similar data for a fan with rotor blade leading edge serrations. Using the conventional fan as a reference, the test data show (1) an increase in high-frequency noise due to the serration pattern for both the ...
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High resolution computation of the aerodynamics and acoustics of blade vortex interaction [PDF]
, 2008 In the present work, high resolution CFD simulations have been performed on an idealised problem of the interaction of an independently generated vortex with a rotor blade, including a case where the vortex directly impacts on the blade.
Duraisamy, K., Thom, A.
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Internal Flow Characteristics and Aerodynamic Noise Suppression of Serrated Trailing Edge Rotor Blades in an Axial-flow Turbine [PDF]
Journal of Applied Fluid MechanicsThe effects of rotor-stator interactions induce complex wake disturbances in turbine blades, and the use of a serrated trailing edge (STE) has been recognized as an effective flow control strategy.
D. D. Sui +4 more
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Cutting blade dentitions in squaliform sharks form by modification of inherited alternate tooth ordering patterns [PDF]
Royal Society Open Science, 2016 The squaliform sharks represent one of the most speciose shark clades. Many adult squaliforms have blade-like teeth, either on both jaws or restricted to the lower jaw, forming a continuous, serrated blade along the jaw margin.
Charlie Underwood +2 more
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AgriEngineeringRegarding the current issues in Xinjiang, China, during the harvesting of cotton stalks, the lack of specialized, efficient, and durable cutting blades for cotton stalks causes uneven cutting, high power consumption, and short blade life.
Weirong Huang +4 more
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Theoretical and Applied Mechanics Letters, 2023 Wind turbine blades are prone to failure due to high tip speed, rain, dust and so on. A surface condition detecting approach based on wind turbine blade aerodynamic noise is proposed.
Weijun Zhu +5 more
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Design Optimization and Experiment of the Hammer Blade for Straw Crushers
Applied SciencesTo address the low operational efficiency and suboptimal crushing quality of conventional straw crushers, a serrated hammer blade was designed and optimized.
Yutao Wang, Shufeng Tang
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Overview of Follicular Extraction
Indian Journal of Plastic Surgery, 2021 Follicular unit extraction (FUE), now named as follicular unit excision, is one of the methods of harvesting hair follicles from the donor area for implanting in the recipient area.
Anil Garg, Seema Garg
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Experimental acoustic study of small horizontal axis wind turbines based on computational fluid dynamics and artificial intelligence approaches [PDF]
مهندسی مکانیک شریفIn modern wind turbine design, two significant challenges arise: achieving optimal aerodynamic performance while minimizing acoustic noise emissions.
M. Sadeghi malekabadi, A.R. Davari
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A general model for trailing edge serrations simulation on wind turbine airfoils
Theoretical and Applied Mechanics Letters, 2021 Trailing edge serrations (TESs) are capable of noticeably suppressing the turbulent trailing edge noise induced by rotating wind turbine blades and become an integral part of a blade.
Huijing Cao +3 more
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