Results 21 to 30 of about 152,300 (313)
CFD-based curved tip shape design for wind turbine blades [PDF]
Wind Energy Science, 2022 This work presents a high-fidelity shape optimization framework based on computational fluid dynamics (CFD). The presented work is the first comprehensive curved tip shape study of a wind turbine rotor to date using a direct CFD-based approach. Preceding
M. H. Aa. Madsen +4 more
doaj +1 more source
Vibrational Diagnostics of Rotating Machinery Malfunctions
International Journal of Rotating Machinery, 1995 This paper outlines rotating machinery malfunction diagnostics using vibration data in correlation with operational process data. The advantages of vibration monitoring systems as a part of preventive/predictive maintenance programs are emphasized. After
Agnes Muszynska
doaj +1 more source
Rotor dynamics ― four open questions [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 Despite many years of development in the field of rotor dynamics, many issues still need to be resolved. This is due to the fact that turbomachines, even those with low output power, have a very complex design.
Jan Kiciński
doaj +1 more source
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016 Elastic-damping supports are widely spread in the design of aviation gas-turbine engines. These supports include elastic elements of the squirrel cage type.
S. A. Degtyarev +2 more
doaj +1 more source
Modal Testing of Rotors with Fluid Interaction
International Journal of Rotating Machinery, 1995 Modal testing of rotating structures has specific aspects, and it requires a specialized approach. Classical modal testing when applied to active (rotating) structures does not provide complete results.
Agnes Muszynska
doaj +1 more source
International Journal of Rotating Machinery, 1999 The transient process which starts at the instability threshold of a rotor rotating in a fluid environment, and ends up in the limit cycle of self-excited vibrations known as fluid whirl or fluid whip, is discussed in this paper.
Agnes Muszynska
doaj +1 more source
International Journal of Rotating Machinery, 1996 The paper presents the dynamic analysis of an anisotropic rotor system with fluid interaction by using modal nonsynchronous perturbation testing and dynamic stiffness approaches.
Eungu Jang +3 more
doaj +1 more source
Lubricants, 2022 Gas bearings have been widely applied to high-speed rotating machines due to their low friction and high rotational speed advantages. Nevertheless, gas lubrication is low viscosity and compressible.
Jianbo Zhang +9 more
doaj +1 more source
A Nonlinear Model for Prediction of Dynamic Coefficients in a Hydrodynamic Journal Bearing
International Journal of Rotating Machinery, 2004 This paper investigates the variation of nonlinear stiffness and damping coefficients in a journal orbit with respect to equilibrium position. The journal orbit is obtained by the combined solution of equations of motion and Reynolds equation.
Jerzy T. Sawicki, T. V. V. L. N. Rao
doaj +1 more source
Experimental study of the aircraft air cycle machine rotor dynamics on gas foil bearings [PDF]
MATEC Web of Conferences, 2020 In this paper the results of the experimental research of the dynamics of the rotor of a four-wheeled aircraft air cycle machine on gas foil supports under conditions of vibration.
Tishhenko Igor Valerevich +2 more
doaj +1 more source