Flow Behavior Caused by Air Permeability of Ski Jumping Suit Fabric
Proceedings, 2020 The purpose of this study was to investigate the effect of the air permeability of ski jumping suit fabric on aerodynamic characteristics. In the study, four types of fabric with different air permeabilities were installed onto a fabric-clothed elliptic ...
Yuki Kataoka +4 more
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Applied Sciences, 2020 Flow separation is undesirable and lowers the efficiency of centrifugal impellers. In this study, the evolution characteristics of separated vortices in a centrifugal impeller are studied under the off-designed flow rate condition.
Shihao Zhou +3 more
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Cause specification of performance curve instability in mixed-flow pump by LES
Nihon Kikai Gakkai ronbunshu, 2016 A technique for high-accuracy predicting performance curve instability in pumps and clarification of the phenomenon in order to control the instability is required for designing high performance pumps.
Isao HAGIYA +4 more
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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
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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
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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
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Sufficient conditions for the additivity of stall forces generated by multiple filaments or motors
, 2016 Molecular motors and cytoskeletal filaments work collectively most of the time under opposing forces. This opposing force may be due to cargo carried by motors or resistance coming from the cell membrane pressing against the cytoskeletal filaments.
Bameta, Tripti +4 more
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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
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