Forced convection of unsteady magnetohydrodynamics fluid past a porous sphere [PDF]
AIP Conference Proceedings, 2017 This paper studies the boundary layer flow of unsteady incompressible and viscous fluid passing over a porous sphere with forced convection. The non-magnetic viscous fluid was induced by magnetic field of the magnetic porous sphere and it becomes Magnetohydrodynamics (MHD) viscous fluid. The dimensional governing equations are developed from continuity
Nadya Alvi Rahma +2 more
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Nonlinear aeroelastic modeling via conformal mapping and vortex method for a flat-plate airfoil in arbitrary motion [PDF]
, 2016 A nonlinear aerodynamic modeling based on conformal mapping is presented to obtain semi-analytical formulas for the unsteady aerodynamic force and pitching moment on a flat-plate airfoil in arbitrary motion.
Mastroddi, Franco +2 more
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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
Small-Time Behavior of Unsteady Cavity Flows [PDF]
, 1963 A perturbation theory is applied to investigate the small-time behavior of unsteady cavity flows in which the time-dependent part of the flow may be taken as a small-time expansion superimposed on an established steady cavity flow of an ideal fluid.
Wang, D. P., Wu, T. Yao-tsu
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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
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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.
Junichiro Fukutomi +3 more
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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
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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
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The leading effect of fluid inertia on the motion of rigid bodies at low Reynolds number [PDF]
, 2004 We investigate the influence of fluid inertia on the motion of a finite assemblage of solid spherical particles in slowly changing uniform flow at small Reynolds number, Re, and moderate Strouhal number, Sl. We show that the first effect of fluid inertia
Lavrenteva, O. M. +2 more
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Exact regularized point particle method for multi-phase flows in the two-way coupling regime [PDF]
, 2014 Particulate flows have been largely studied under the simplifying assumptions of one-way coupling regime where the disperse phase do not react-back on the carrier fluid.
Casciola, C. M. +3 more
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