Results 81 to 90 of about 1,595,600 (284)

Predicting fan noise propagation in aeroengine bypass ducts

, 2009
This thesis explores the prediction of rearwards fan noise propagation within the bypass duct and its radiation into the far feld. Two recently developed models: B-induct and GXMunt, are exploited in application to real engine bypass ducts and their ...
McAleer, Claire Roisin
core   +1 more source

Numerical simulation and experimental research on the aerodynamic performance of large marine axial flow fan with a perforated blade

Journal of Low Frequency Noise, Vibration and Active Control, 2018
In this study, some of the optimal parameters for a new-style marine axial flow fan are defined by using numerical simulation and experimental tests with a large marine axial flow fan, based on the analysis of the blade perforation’s influences on its ...
Xinglin Yang, Chenhui Wu, Huabing Wen, Linglong Zhang   +3 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

A Prediction on Specific Noise Based on Internal Flow of a Forward Curved Fan [PDF]

, 2007
Specific noise which consists of total pressure and fan noise is available to estimate the overall performance. In this study, a prediction theory of specific noise for a forward curved fan is proposed.
佐々木, 壮一, 児玉, 好雄, 畠山, 真, 林, 秀千人   +3 more
core  

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

Advanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider, Jiajie Liang, Paul Somers, Martin Wegener, Jens Bauer   +4 more
wiley   +1 more source

Influence of Tongue Clearance Flow on Aerodynamic Noise Source of a Forward Curved Fan [PDF]

, 2011
A visualization method of aerodynamic noise source based on momentum in wake of a centrifugal impeller is proposed. The characteristics of the fan noise operated at the design point and the off design point are discussed by the visualization.
佐々木, 壮一, 黒田, 晃伸, 林, 秀千人   +2 more
core  

Large Eddy Simulation of the ACAT1 fan stage for broadband noise prediction

, 2023
International audienceA numerical study is carried out to assess the aerodynamic and noise radiation specific features of the ACAT1 fan stage, which was tested in the framework of the European project TurbonoiseBB. This study deals with the prediction of
Jacob, Marc, Sanjosé, Marlène, Stéphane Moreau, Moreau, Stéphane, Marc C. Jacob, Marlène Sanjosé, Danny Lewis, Lewis, Danny   +7 more
core   +1 more source

Prediction of Aerodynamic Noise of Fans.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2000
The aerodynamic and the noise characteristics of a centrifugal fan were obtained experimentally. Typical velocity components-for example absolute velocity and relative velocity-were caluculated from the characteristics of aerodynamics and the theory of fans.
WATANABE, Masatoshi, TAKADA, Yoshihiro, SATO, Ryoji, OTAGURO, Toshio   +3 more
openaire   +2 more sources

Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3

Advanced Functional Materials, EarlyView.
Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh, Heung‐Sik Park, Jong‐Sook Lee, Chan‐Ho Yang   +3 more
wiley   +1 more source