Unstable Head-Flow Characteristic Generation Mechanism of a Low Specific Speed Mixed How Pump-中国期刊网

摘要 Thispapertreatstheflowinstabilitiesinamixedflowpumpwithavaneddiffuser.Testpumphasapositiveslopeofahead-flowperformancecurveat65%flowrateofBEP(BestEfficiencyPoint)becauseofarotatingstall.DynamicParticleImageVelocimetry(PIV)andpressurefluctuationmeasurementsareusedforinvestigatingthepropagationmechanismofarotatingstall.Itwasfoundthatunstableperformancewascausedbyperiodicallargescaleabruptbackflowgeneratedfromthevaneddiffusertotheoutletofimpeller.Further,therelationbetweenthestaticpressureattheinletofdiffuservaneandtheinternalflowconditionwasclarified.Fromtheseexperimentalresults,inordertoimprovethepositiveslopeofahead-flowperformancecurve,tosuppressthegrowthofstrongvortextowardtheinletofdiffuservanewasprovedtobeakeypoint.

1AHMAD Aldarouich. Design of Scale Model Mechanism in Low Speed Wind Tunnel.计算机应用技术,2008-02.
2Linlin Cao;Satoshi Watanabe;Toshiki Imanishi;Hiroaki Yoshimura;Akinori Furukawa. Experimental Analysis of Flow Structure in Contra-Rotating Axial Flow Pump Designed with Different Rotational Speed Concept.物理,2013-04.
3JonathanCox. Low head pico hydro.水利水电工程,2002-12.
4Yao Hongwei Yan Peigang Han Wanjin. Numerical Investigation of Influence of Rotor/Stator Interaction on Blade Boundary Layer Flow in a Low Speed Compressor.物理,2011-01.
5Akihiro WADA. Flow Structure Around the Intake of a Vertical Pump.物理,2006-02.
6Guojie Zhao Gang Lu. Research on Generation Mechanism of Technical Innovation.国际贸易,2005-09.
7马西奎. CHARACTERISTIC IMPEDANCE OF SPECIFIC TRANSMISSION LINES WITH OFFSET INNER CONDUCTORS.物理电子学,1990-03.
8YonganZhang;HuaLiang. Characteristic Analysis and Design of Power Flow of Organizations.系统科学,2004-04.
9A. Dazin;O. Coutier-Delgosha;P. Dupont;S. Coudert;G. Caignaert;G. Bois. Rotating instability in the vaneless diffuser of a radial flow pump.物理,2008-04.
10Bao-ling Cui;Yong-gang Lin;Ying-zi Jin. Numerical Simulation of Flow in Centrifugal Pump with Complex Impeller.物理,2011-01.

Unstable Head-Flow Characteristic Generation Mechanism of a Low Specific Speed Mixed How Pump

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Unstable Head-Flow Characteristic Generation Mechanism of a Low Specific Speed Mixed How Pump

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