Results 31 to 40 of about 368,794 (339)
Stall Inception in Low-Pressure Ratio Fans
Journal of turbomachinery, 2019 A combined experimental and computational test program, with two low-pressure ratio aero-engine fans, has been used to identify the flow mechanisms at stall inception and the subsequent stall cell growth.
Semi Kim +5 more
semanticscholar +1 more source
Unsteady blade-passage flows of a mixed-flow pump at performance-curve instability
Nihon Kikai Gakkai ronbunshu, 2018 For designing a high-performance mixed-flow pump, control and suppression of performance-curve instability is crucial. For doing so, clarification of the essential flow physics that leads to the performance-curve instability is crucial in addition to an ...
Isao HAGIYA +4 more
doaj +1 more source
Unstable Flow Structures Present at Different Rotational Velocities of the Centrifugal Compressor
Energies, 2020 Unstable flow structures cause inevitable energy losses in all power energy systems, including turbomachines. In this study, a set of analyses was conducted with the use of spectral maps on the pressure signals obtained from an industrial centrifugal ...
Grzegorz Liśkiewicz +6 more
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A novel technique for the calculation of post-stall aerodynamic coefficients for S809 airfoil [PDF]
FME Transactions, 2020 In the autumn of 2000, the National Renewable Energy Laboratory (NREL) organised a 'blind comparison', in which wind turbine research centres worldwide were asked to provide stationary aerodynamic loads for the wind turbine Phase VI and aerodynamic ...
Arramach J. +3 more
doaj
Research on Groove Method to Suppress Stall in Pump Turbine
Energies, 2020 The pump turbine is prone to stall when running at part-load operation. Stalls would cause a hump-like head characteristic curve, low-frequency high-amplitude pressure pulsation, and surge or resonance in the system.
Yong Liu, Hongjuan Ran, Dezhong Wang
doaj +1 more source
A method for predicting the rate and effect of approach to the stall of a microlight aeroplane [PDF]
, 2006 The stall and immediately post-stall behaviour of a microlight aeroplane are shown to be a function of the deceleration rate prior to the stall; therefore, it is necessary to use a representative deceleration rate when determining the acceptability of ...
Gratton, GB
core +1 more source
Italian National Conference on Sensors, 2019 Rotating stall limits the operating range and stability of the centrifugal compressor and has a significant impact on the lifetime of the impeller blade. This paper investigates the relationship between stall pressure wave and its induced non-synchronous
Xinwei Zhao +3 more
semanticscholar +1 more source
Influence of Distributed Leading-Edge Roughness on Stall Characteristics of NACA0012 Airfoil
Shanghai Jiaotong Daxue xuebao, 2022 The influence of the distributed leading-edge roughness on the stall characteristics of NACA0012 airfoil is analyzed in full turbulence flow or transition flow.
LI Yi, BAI Junqiang, ZHANG Yanjun, ZHAO Ke
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A Zonal Detached Eddy Simulation of the Trailing Edge Stall Process of a LS0417 Airfoil
AerospaceA Zonal Detached Eddy Simulation (ZDES) based on the SST turbulence model is implemented to the numerical investigation of the trailing edge stall of a LS-0417 airfoil, which includes multiple DES modes for different classifications of flow separation ...
Wenbo Shi, Heng Zhang, Yuanxiang Li
doaj +1 more source
Journal of Fluid Science and Technology, 2011 Radial-vaned air separators produce strong stall improvement effect in axial flow fans. Changes in the fan internal flow patterns achieved by the device are confirmed by Pitot traverse measurements. For the air separator condition, with a decrease in the
Nobuyuki YAMAGUCHI +2 more
doaj +1 more source