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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Exploring values, context and perceptions in contingent valuation studies: the CV Market Stall technique and willingness to pay for wildlife conservation. [PDF]
, 2005 Public preferences for conservation and environmental management may be identified in willingness to pay (WTP) studies. Normally part of a contingent valuation exercise, WTP studies elicit monetary estimates of non-market economic goods.
Lorna J Philip +5 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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Unten rechts auf Unterlage mit Feder in Braun von Hans Kaspar Ott Meyer zugeschrieben "Ludwig Meyer, von Knonau zu Weiningen."
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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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Comparison and Sensibility Analysis of Warning Parameters for Rotating Stall Detection in an Axial Compressor [PDF]
, 2020 The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor.
ROUSSETTE, Olivier +7 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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