Results 21 to 30 of about 101,417 (300)
Unsteady forces on an accelerating plate and application to hovering insect flight [PDF]
, 2004 The aerodynamic forces on a flat plate accelerating from rest at fixed incidence in two-dimensional power-law flow are studied analytically and numerically.
Pullin, D. I., Wang, Z. Jane
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Some Unsteady Fluid Forces on Pump Impellers [PDF]
Journal of Fluids Engineering, 1992 Spectral analyses of all the forces and moments acting on a typical centrifugal pump impeller/volute combination are presented. These exhibit shaft frequencies, blade passing frequencies, and beat frequencies associated with a whirl motion imposed on the shaft in order to measure rotordynamic forces.
R. S. Miskovish, C. E. Brennen
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Unsteady loads for coaxial rotors in forward flight computed using a vortex particle method [PDF]
, 2018 Recent advances in coaxial rotor design have shown benefits of this configuration. Nevertheless, issues related to rotor-head drag, aerodynamic performance, wake interference, and vibration should also be considered.
Barakos, George +2 more
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Journal of Fluid Science and Technology, 2017 The causal relationship between unsteady forces of wet-steam flows on rotor-blade rows and the steam condensation in low pressure steam turbines is still one of unresolved issues.
Hironori MIYAZAWA +2 more
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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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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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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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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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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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