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Research on the Bionic Design and Performance of Engine Cooling Fan with Blade Tip Serrated
SAE Technical Paper Series, 2022<div class="section abstract"><div class="htmlview paragraph">Turbulence caused by the blade tip of engine cooling fan is one of important noise generating factors. Existing theoretical researches show that the bionic serrated designs applied at the front and rear edges of fan blades can effectively improve the airflow characteristics and ...
Zhanlin Ma +3 more
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An Experimental Model of Tool Mark Striations in Soft Tissues Produced by Serrated Blades
American Journal of Forensic Medicine & Pathology, 2011Stab wounds produced by serrated blades are generally indistinguishable from stab wounds produced by non-serrated blades, except when visible tool mark striations are left on severed cartilage. We explored the possibility that similar striations may be produced on the soft tissues of internal organs.
Pounder, Derrick J., Cormack, Lesley
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Structural Integrity of Serrated Leading Edge Guide Vane Blades for Noise Reduction
Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, 2021Abstract One of the major noise sources of high bypass ratios modern turbofan engines arises from the interaction between the turbulent rotor wake, the tip-leakage and the leading edge of the downstream outlet guide vanes. Recent research has confirmed that leading edge serrations are an effective passive control for reducing noise ...
Cleopatra Cuciumita +3 more
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25th AIAA/CEAS Aeroacoustics Conference, 2019
Weiyang Qiao, Hang Tong, Wenhua Duan
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Weiyang Qiao, Hang Tong, Wenhua Duan
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Prediction of broadband noise from rotating blade elements with serrated trailing edges
Physics of Fluids, 2022This paper conducts a theoretical investigation into the prediction of broadband trailing-edge noise for rotating serrated blades. Lyu's semi-analytical noise prediction model for isolated flat plates is extended to rotating blades using Schlinker and Amiet's approach and applied to three test applications including a wind turbine, a cooling fan, and ...
Haopeng Tian, Benshuai Lyu
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Effect of Leading-Edge Serrations on Helicopter Blade–Vortex Interaction Noise
Journal of the American Helicopter Society, 2011The acoustic benefits of a serrated leading edge rotor blade are experimentally explored and compared with a more conventional rotor blade with a straight leading edge. An experimental simulation called the Blade-Controlled Disturbance Interaction (BCDI), in which a hovering rotor blade rotates through a stationary gust field is employed.
Joel Feinerman +2 more
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Noise reduction in small wind turbines with optimized serrated blades
Physics of FluidsThis study employs a comprehensive combination of experimental and numerical methodologies to delve into the aeroacoustic attributes of a small horizontal axis wind turbine with optimized blades. The experimental investigation is conducted within a semi-anechoic chamber, where both original and optimized geometry models are meticulously positioned to ...
Mahyar Sadeghimalekabadi +2 more
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Quality of Reamed Surface Using Serrated Blades as Compared to a Conventional Acetabular Reamer
Volume 11: Emerging Technologies, 2013Background: Hip arthroplasty requires the preparation of the acetabular cavity to allow a proper contact between the bone and the implant. It is essential to allow osseointegration and long-term stability of the implant. The aim of this study was to conduct experimental testing to evaluate the quality of reamed surfaces using a serrated blade ...
Annie Levasseur +4 more
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Experimental Study of the Effect of Serrations on Axial Flow Fan Blade Trailing Edge
Volume 1: Advances in Aerospace Technology, 2016Rotor wakes shed from a compressor rotor impinge on downstream blades and is a major source of rotor-stator interaction noise and much research has been dedicated on wake attenuation. Serrated trailing edges is one such wake attenuation technique where the vortices produced at the serrated trailing edges enhance mixing and create a more uniform flow at
Dhyanjyoti Deb Nath +2 more
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The noise study of ceiling swirl diffuser with serrated adjustable blades
Vibrations in Physical Systems, 35(2), 2024202-1 - 2024202 ...Kopania, Joanna Maria +3 more
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