Results 21 to 30 of about 1,824,023 (309)
Fine flow field and unsteady hydrodynamic performance calculation for rudder cavitation
Zhongguo Jianchuan Yanjiu, 2018 [Objectives] In order to study the precise flow field of rudder cavitation and its related laws of unsteady hydrodynamic performance, [Methods] a propeller and rudder model of a certain ship is established, and a structure grid, SST k-ω turbulence model ...
YU Anbin, YE Jinming, WANG Youqian
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Application of modified Navier-Stokes equations to determine the unsteady force effects of a heterogeneous liquid [PDF]
EPJ Web of Conferences, 2019 The article is focused on calculating the force effects of a heterogeneous liquid on pipe walls. The solution is based on the concentration of solid particles. The base fluid is assumed to be incompressible.
Pochylý František +2 more
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Detailed mechanism of self-excited vibration of a plate supported by air pressure
Nihon Kikai Gakkai ronbunshu, 2021 This study presents a dynamic stability analysis of the self-excited vibration of a plate supported by air pressure. In the analysis, the unsteady fluid force acting on the plate surface is calculated based on the theory of two-dimensional leakage flow ...
Masakazu TAKEDA, Masahiro WATANABE
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Numerical Simulation Research on Radial Force of Centrifugal Pump with Guide Vanes
Shock and Vibration, 2021 To reveal the internal unsteady flow state of the guide vane centrifugal pump, in this paper, the standard SST k‐ω turbulent flow model is used for unsteady numerical simulation of the centrifugal pump.
Dongrong Meng +3 more
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Fan noise and unsteady rotor forces [PDF]
The Journal of the Acoustical Society of America, 1987 The noise radiated by a subsonic, axial-flow fan at its rotational frequency and harmonics is related to the nonsteady force field created at the rotor blade/fluid interface. This force field is highly dependent on the time-invariant flow distortions that enter the fan.
Wen-Shyang Chiu +2 more
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Nihon Kikai Gakkai ronbunshu, 2016 This paper presents a three-dimensional flutter analysis of a rectangular sheet in an axial fluid flow. The unsteady fluid force acting on the sheet surface is calculated using Doublet-point method based on the unsteady lifting surface theory.
Masahiro WATANABE +4 more
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Dynamic Drag Reduction Effects of Aerospikes and Aerodisks
International Journal of Aerospace Engineering, 2021 In order to investigate the dynamic characteristics of blunt aircraft mounted with aerospikes and aerodisks in large-amplitude force-pitching, the Roe spatial scheme and the lower-upper symmetric Gauss-Seidel (LU-SGS) method with dual time step are ...
Rong Han +3 more
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Nihon Kikai Gakkai ronbunshu, 2018 This paper presents experiments and an analysis of the self-excited vibration of a plate supported by air pressure. In the analysis, the unsteady fluid force acting on the plate is calculated based on the basic equation of a two-dimensional gap flow ...
Masakazu TAKEDA, Masahiro WATANABE
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Numerical analysis of unsteady forces in a pump-jet propulsor due to dynamic tip-clearance changes
Zhongguo Jianchuan YanjiuObjectiveThis study aims to investigate the effects of dynamic variations in rotor tip-clearance on the unsteady forces of a pump-jet propulsor, while analyzing the role of a flexible isolation system in influencing the excitation characteristics of the ...
Huiyao LI +5 more
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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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