Results 21 to 30 of about 4,615 (244)
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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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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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
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Nihon Kikai Gakkai ronbunshu, 2014 Dynamic response of the fluid force acting on an axially oscillating balance piston was numerically investigated. The balance piston of a rocket engine turbopump was modeled and forced to oscillate in the axial direction.
Toshiya KIMURA +4 more
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Unsteady Fluid Forces Acting on a Disk Simulating a Hand of Swimmer
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2006 In the early 1970s, the issue of whether propulsion in swimming is due primarily to lift or drag appeared. Prior to that time it was believed that the best way to propel the body forward was to pull the hand directly backwards to use drag forces. Furthermore, the actual motion of a hand in swimming is obviously unsteady and the time-dependent fluid ...
ODAKA, Yusuke +2 more
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Study of Unsteady Fluid Forces on a Rotationally Oscillating Circular Cylinder
Journal of the Visualization Society of Japan, 2005 The characteristics of fluid forces on a rotationally oscillating circular cylinder in a uniform flow are studied experimentally at various forcing frequencies and rotational amplitudes of cylinder oscillation. The measurements are made on the pressure fields around the circular cylinder by using the velocity data measured by PIV in conjunction with ...
NAKANO, Tomonori, FUJISAWA, Nobuyuki
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Three dimensional flutter analysis and wind-tunnel experiments of slender webs in cross flow
Nihon Kikai Gakkai ronbunshu, 2017 This paper presents a three dimensional flutter analysis of slender webs under tension in cross flow. In the flutter analysis, Doublet-point method based on the unsteady lifting surface theory is used to calculate unsteady fluid force acting on the web ...
Keiichi HIROAKI +2 more
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International Journal of Rotating Machinery, 2001 In recent years, increasing interest has been given to the rotordynamic fluid forces on impellers, from the view point of the shaft vibration analysis. Previous experimental and analytical results have shown that the fluid-induced forces and moments on ...
Yoshiki Yoshida +4 more
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Nihon Kikai Gakkai ronbunshu, 2019 This paper presents experiments and an analysis of the self-excited vibration of a floating plate and a support structure. The system in which a floating plate and a support structure vibrate, the elasticity of the support structure influences the ...
Masakazu TAKEDA +2 more
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Nihon Kikai Gakkai ronbunshu, 2016 This paper deals with the flutter analysis of a rectangular sheet supported by a wire in axial flow. In the flutter analysis, Doublet-Point Method based on unsteady lifting surface theory is used to calculate the unsteady fluid force acting on the sheet ...
Keiichi HIROAKI, Masahiro WATANABE
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