Cavity induced vibration of flexible hydrofoils [PDF]
, 2014 The objective of this work is to investigate the influence of cavity-induced vibrations on the dynamic response and stability of a NACA66 hydrofoil at 8° angle of attack at Re=750 000 via combined experimental measurements and numerical simulations.
CHAE, Eun Jung +4 more
core +1 more source
Stereo PIV measurements of vortex behavior produced by a pitch-oscillating discoid airfoil
Journal of Fluid Science and Technology, 2014 Flying animals and insects flap their wings using a combination of pitching and heaving oscillations. Unsteady fluid forces presumably play an important role in the flight mechanism, and also in the propulsive force of swimmers performing the front crawl.
Toshihiro HANIU, Hiroaki HASEGAWA
doaj +1 more source
Numerical study of a Flexible Sail Plan submitted to pitching : Hysteresis phenomenon and effect of rig Adjustments [PDF]
, 2014 Yacht sails dynamic fluid structure interaction is simulated in harmonic pitching Aerodynamic forces show hysteresis associated to energy dissipation Dissipated energy increases with pitching frequency and amplitude Hysteresis is cancelled and forces ...
AUGIER, Benoit +4 more
core +1 more source
Dynamic stability and exciting mechanism of a plate supported by air pressure
Nihon Kikai Gakkai ronbunshu, 2016 This paper presents experiments and an analysis on the self-excited vibration of a plate supported by air pressure. The instability conditions are examined using a theoretical analysis considering the effect air compressibility in a chamber.
Masakazu TAKEDA, Masahiro WATANABE
doaj +1 more source
Unsteady Fluid Forces on a Blade in a Cross-Flow Turbine.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1993 The internal flow in a cross-flow turbine is nonuniform because the water passes through only part of the runner. Therefore, the unsteady fluid forces act on a blade through rotation. The experimental and theoretical studies for determination of fluid forces on the blade in a cross-flow turbine are conducted.
Fukutomi, Junichiro +3 more
openaire +3 more sources
Forced vibration of a sheet under periodic aerodynamic excitation
Nihon Kikai Gakkai ronbunshu, 2020 This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel.
Keiichi HIROAKI +2 more
doaj +1 more source
An Unsteady Model for Aircraft Icing Based on Tightly-Coupled Method and Phase-Field Method
Aerospace, 2021 An unsteady tightly-coupled icing model is established in this paper to solve the numerical simulation problem of unsteady aircraft icing. The multi-media fluid of air and droplets is regarded as a single medium fluid with variable material properties ...
Hao Dai +4 more
doaj +1 more source
A 'reciprocal' theorem for the prediction of loads on a body moving in an inhomogeneous flow at arbitrary Reynolds number [PDF]
, 2011 Several forms of a theorem providing general expressions for the force and torque acting on a rigid body of arbitrary shape moving in an inhomogeneous incompressible flow at arbitrary Reynolds number are derived.
Magnaudet, Jacques, Jacques Magnaudet
core +1 more source
Approximate Analytical Model for the Squeeze-Film Lubrication of the Human Ankle Joint with Synovial Fluid Filtrated by Articular Cartilage [PDF]
, 2010 The aim of this article is to propose an analytical approximate squeeze-film lubrication model of the human ankle joint for a quick assessment of the synovial pressure field and the load carrying due to the squeeze motion.
Emilio Gòmez +5 more
core +2 more sources
Measurements of the Flow in Backshroud/Casing Clearance of Precessing Centrifugal Impeller
International Journal of Rotating Machinery, 1997 Detailed flow measurements have been made to clarify the unsteady flow in the backshroud/ casing clearance of a precessing centrifugal impeller. The unsteady pressure was integrated to obtain the fluid force moment on the precessing impeller shroud for ...
Yoshiki Yoshida +4 more
doaj +1 more source