Results 51 to 60 of about 683,706 (365)
3D CFD Simulation and Experimental Validation of Small APC Slow Flyer Propeller Blade
Aerospace, 2017 The current work presents the numerical prediction method to determine small-scale propeller performance. The study is implemented using the commercially available computational fluid dynamics (CFD) solver, FLUENT. Numerical results are compared with the
Hairuniza Ahmed Kutty +1 more
doaj +1 more source
Energies, 2021 Infrasound, i.e., low-frequency noise in the frequency range of 10–200 Hz, produced by rotating wind turbine blades has become a matter of concern because it is harmful to human health.
Jinlei Lv +5 more
doaj +1 more source
Development of an aeroelastic stability boundary for a rotor in autorotation [PDF]
, 2008 <p>For the present study, a mathematical model AMRA was created to simulate the aeroelastic behaviour of a rotor during autorotation. Our model: Aeroelastic Model of a Rotor in Autorotation (AMRA) captures transverse bending and teeter ...
Gillies, E.A. +2 more
core
Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels
Advanced Functional Materials, EarlyView.Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula +1 more
wiley +1 more source
Advanced Functional Materials, EarlyView.This work develops flexible zinc‐ion batteries (FZIBs) using a zincophilic/hydrophobic polymer (thermoplastic polycarbonate‐based polyurethane, TPCU) to protect Zn powder anodes and MXene/Silk (MXS) as flexible current collectors. The designed TPCU‐ZnP@MXS structure enables uniform Zn deposition, yielding dendrite‐free anodes with stable cycling ...
Zixuan Yang +8 more
wiley +1 more source
Zhongguo dianli, 2020 Based on the NREL Phase VI and its scaled wind turbines, and combined with 3D CFD numerical simulations and 2D airfoil wind tunnel experiments, the correction effects of four three-dimensional effect correction formulas including Snel, Lindenburg, Du ...
Xiaoming XU +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song +3 more
wiley +1 more source
Blade by Blade Tip Clearance Measurement [PDF]
International Journal of Rotating Machinery, 2011 This paper describes a capacitance-based tip clearance measurement system which engineers have used in the most demanding turbine test applications. The capacitance probe has survived extended use in a major European gas turbine manufacturer's high-temperature demonstrator unit, where it functioned reliably at a turbine entry temperature in excess of ...
openaire +2 more sources
Alleviation of unbalanced rotor loads by single blade controllers [PDF]
, 2009 A novel approach to reducing the unbalance rotor loads by pitch control is presented in this paper. Each blade has its own actuator, sensors and controller.
Dominguez, S. +2 more
core
Aerodynamic and acoustic analysis of helicopter main rotor blade tips in hover [PDF]
, 2016 Purpose: The design of main rotor blade tips is of interest to helicopter manufactures since the tip details affect the performance and acoustics of the rotor. The paper aims to discuss this issue.
Barakos, George +4 more
core +1 more source