Results 21 to 30 of about 4,272 (296)

Cross-Wind Aeroelastic Effects of Tall Buildings with a Hexagonal Cross-Section

open access: yesAtmosphere, 2023
This research investigates the cross-wind aeroelastic effects of tall buildings with hexagonal cross-sections by using aeroelastic models with multiple-degree-of-freedom (MDOF).
Yuhui Fan, Jingwen Lu, Lei Wang
doaj   +1 more source

Effects of Damping and Reynolds Number on Vortex-Induced Vibrations [PDF]

open access: yes, 2007
Vortex-induced vibrations have been studied experimentally with emphasis on damping and Reynolds number effects. Our system was an elastically-mounted rigid circular cylinder, free to oscillate only transverse to the flow direction, with very low ...
Klamo, Joseph Thomas
core   +1 more source

Influence of Fluid Viscosity and Compressibility on Nonlinearities in Generalized Aerodynamic Forces for T-Tail Flutter

open access: yesAerospace, 2022
The numerical assessment of T-tail flutter requires a nonlinear description of the structural deformations when the unsteady aerodynamic forces comprise terms from lifting surface roll motion.
Dominik Schäfer
doaj   +1 more source

On the Determination of the Aerodynamic Damping of Wind Turbines Using the Forced Oscillations Method in Wind Tunnel Experiments

open access: yesEnergies, 2019
The development of wind turbine technology has led to higher and larger wind turbines with a higher sensitivity to dynamic effects. One of these effects is the aerodynamic damping, which introduces favorable damping forces in oscillating wind turbines ...
Robert Fontecha   +2 more
doaj   +1 more source

Pendulum with aerodynamic and viscous damping

open access: yesJournal of Applied Information, Communication and Technology, 2020
In this paper we discuss about how the relationship between non-linear differential equations on aerodynamic damping with linearly viscous damping equations. And it turns out after analyzing that the changes that occur pendulum that changes from the start of the maximum state to a stable state takes time so that changes that occur until the state is ...
openaire   +2 more sources

Aerodynamic Damping Characteristics of a Transonic Turbine Cascade [PDF]

open access: yesVolume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, 1999
The unsteady aerodynamic characteristics of oscillating thin turbine blades were studied both experimentally and numerically to obtain the comprehensive knowledge on the aerodynamic damping of the blades operating in transonic flows. The experiment was carried out in a linear cascade tunnel by use of the influence coefficient method.
Mizuho Aotsuka   +2 more
openaire   +1 more source

Stability Threshold of Herringbone Grooved Aerodynamic Journal Bearings with External Stiffness and Damping Elements

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
Herringbone grooved aerodynamic journal bearings have better stability characteristics than plane aerodynamic journal bearings. In addition, the use of flexibly supported bearings is one of the efficient way to improve the bearing stability. Therefore,
Jun TOMIOKA, Norifumi MIYANAGA
doaj   +1 more source

Computation of Aerodynamic Damping for Flutter Analysis of a Transonic Fan

open access: yes, 2011
This paper describes the computational analysis of aerodynamic damping for prediction of flutter characteristics of a transonic fan stage that consists of a highly loaded rotor along with a tandem stator.
Parthasarathy Vasanthakumar   +1 more
core   +1 more source

Acrosswind aerodynamic damping of isolated square-shaped buildings

open access: yes, 2011
Aeroelastic model tests were performed to study the acrosswind response and aerodynamic damping of isolated square-shaped high-rise buildings. The experimental measurements were compared with response predictions based upon wind loads obtained from ...
Cheng, C.M.; Lu, P.C.; Tsai, M.S
core   +1 more source

Quantification of aerodynamic damping

open access: yes, 2020
Der sichere Betrieb von Turbomaschinen setzt die mechanische Integrität der Schaufeln voraus. Die Belastung der Schaufeln durch Schwingungen muss dazu soweit reduziert werden, dass Schäden durch Dauerschwingbruch ausgeschlossen werden können.
Meinzer, Christopher Emmanuel
core   +1 more source

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