侧孔式旋转空化器数值计算与实验

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关键词：旋转空化器；侧孔式；数值计算；实验研究；转速

DOI：10.15938/j. jhust.2025.06.009

中图分类号：0427.4 文献标志码：A 文章编号：1007-2683（2025）06-0080-08

Abstract：Inordertostudytheinfluenceofrotorspeedoncavitationperformanceof side-holerotarycavitationdevice，an experimentalplatformwasfirstbuiltinthispaper.Basedonthethermalefectofcavitation，thetemperaturechangeofpurewater samplesaftercavitationwasusedasthebasisforevaluatingcavitationperformance.Theexperimentalresultsshowedthat：Asthemotor speed increases successively （ 2100r/min 二 2300r/min ， 2500r/min ， 2700r/min ， 3000r/min ），the temperature of the water sample after cavitation increases significantly. When the motor speed increases from 2100r/min to 3000r/min ，the temperature increases by 1.8 times.Through CFD software，with the gas-phase volume fraction asthe criterion for evaluating cavitation performance，numericalsimulationswereconductedtoobtainthegas-phasevariationpaterswithintheblindholesothendface under different rotational speeds. Within a certain range （ 2000-6000r/min. ），the gas phase volume in the blind hole increases as the rotor speed increases. When the rotor speed increases from to 6000r/min ， the gas phase volume increases by 6.3 times.ThisconcusionisconsistentwiththevariationtrendofteexpermentalresultTereareerorsbetweenumericalsiulation andexperiment.Theerorsaremainlyduetothereasoablesimplificationof thecavitationmodelandthetemperaturerisecausedby thehigh-speedoperationof thecavitation.Theexperimentalresultsverifythereliabilityndaccuracyofthenumericalsimulations.

Keywords：rotary cavitator； side-hole type； numerical calculation；experimental study；rotational speed

0 引言

水力空化是当局部压力降低到该温度的饱和蒸气压以下时，液体所发生的一种汽化现象，微观上被定义为一种微气泡或空泡的形成、生长和坍塌的现象[1]。（剩余11624字）