Results 81 to 90 of about 32,009 (212)

Numerical investigation on the shock-wave and flow structures in a transonic contra-rotating axial compressor

open access: yesAdvances in Mechanical Engineering, 2017
Numerical simulation has been conducted on a transonic contra-rotating axial compressor to investigate the shock wave and flow characteristics under various operation conditions.
Hanru Liu   +3 more
doaj   +1 more source

Stator hub treatment study [PDF]

open access: yes
The results of an experimental research program to investigate the potential of improving compressor stall margin by the application of hub treatment are presented.
Hilvers, D. E., Wisler, D. C.
core   +1 more source

Tidal turbine blade load experiments for oscillatory motion [PDF]

open access: yes, 2011
This paper presents blade root bending moment measurements of a horizontal-axis tidal turbine for planar oscillatory motion, conducted in a stationary water towing tank.
Bickerton, S   +4 more
core  

Mars Science Helicopter Conceptual Design [PDF]

open access: yes, 2020
Robotic planetary aerial vehicles increase the range of terrain that can be examined, compared to traditional landers and rovers, and have more near-surface capability than orbiters. Aerial mobility is a promising possibility for planetary exploration as
Balaram, Jayarao   +15 more
core   +1 more source

Some observations of the effects of radial distortions on performance of a transonic rotating blade row [PDF]

open access: yes
A single rotating blade row was tested with two magnitudes of tip radial distortion and two magnitudes of hub radial distortion imposed on the inlet flow.
Sandercock, D. M., Sanger, N. L.
core   +1 more source

Extension of the discontinuous Galerkin finite element method to viscous rotor flow simulations [PDF]

open access: yes, 2005
Heavy vibratory loading of rotorcraft is relevant for many operational aspects of helicopters, such as the structural life span of (rotating) components, op- erational availability, the pilot’s comfort, and the ef- fectiveness of weapon targeting systems.
Boelens, O.J.   +3 more
core   +1 more source

A Model for Predicting Post-Stall Behavior of Axial Compressors

open access: yesJournal of Applied Fluid Mechanics, 2021
The current paper reports on a new theory developed by modifying the basic Moore-Greitzer model, which can predict the performance of a compression system during the instabilities in more details.
M. Shahriyari, H. Khaleghi, M. Heinrich
doaj  

A theoretical study of fluid forces on a centrifugal impeller rotating and whirling in a vaned diffuser [PDF]

open access: yes
The fluid forces on a centrifugal impeller rotating and whirling in a vaned diffuser are analyzed on the assumption that the number of impeller and diffuser vanes is so large that the flows are perfectly guided by the vanes.
Acosta, Allan J.   +2 more
core   +1 more source

Determination of compressor in-stall characteristics from engine surge transients [PDF]

open access: yes
A technique for extracting the in-stall pumping characteristics for an axial flow compressor operating in an engine system environment is developed. The technique utilizes a Hybrid computer simulation of the compressor momentum equation into which actual
Chiaramonte, F. P.   +2 more
core   +1 more source

Experimental Investigation of Stall Inception Mechanisms of Low Speed Contra Rotating Axial Flow Fan Stage

open access: yesInternational Journal of Rotating Machinery, 2015
The present paper is an attempt in understanding the stall inception mechanism in a low speed, contra rotating axial flow fan stage, using wavelet transforms.
Tegegn Dejene Toge, A. M. Pradeep
doaj   +1 more source

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