Results 31 to 40 of about 6,264 (285)
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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Upwind sail aerodynamics: A RANS numerical investigation validated with wind tunnel pressure measurements [PDF]
, 2012 The aerodynamics of a sailing yacht with different sail trims are presented, derived from simulations performed using computational fluid dynamics. A Reynolds-averaged Navier-Stokes approach was used to model sixteen sail trims first tested in a wind ...
VIOLA, Ignazio +6 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
openaire +2 more sources
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
openaire +2 more sources
, 2013 We numerically investigate the dynamics of thin disks falling under gravity in a viscous fluid medium at rest at infinity. Varying independently the density and thickness of the disk reveals the influence of the disk aspect ratio which, contrary to ...
Auguste, Franck +2 more
core +1 more source
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
doaj +1 more source
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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Slow motion of a sphere towards a plane through confined non-Newtonian fluid [PDF]
, 2011 The time needed for the contact of two spheres or a sphere with a rigid plane is mainly controlled by the hydrodynamic drainage of the film located in the gap as long as its thickness is out of range of the Van der Waals interactions.
AMBARI, Abdelhak +3 more
core +1 more source
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, 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
doaj +1 more source