简介：Inthisstudy,particleimagevelocimetrywasappliedtoinvestigateflowfieldsofwormlikemicelle(WLM)fluidsinamixingtankequippedwithafour-blade,down-pumping,pitchedbladeturbine.First,therheologyofWLMfluidswasinvestigated,andtheCarreaumodelwasutilizedtodescribetheirapparentviscosity.Then,theeffectsoftherotationspeedsandrheologicalpropertiesontheflowfieldswerestudiedusingdifferentWLMfluidsatdifferentrotationspeeds.TheresultsrevealedthatwithincreasingReynoldsnumber,thedischargeangledecreasesandthecarvensizeincreases.Furthermore,elasticeffectsofWLMfluidsleadtoamorecurvedflowandasmallercarven.

简介：Animprovedsmoke-wireflowvisualizationtechniqueusingalargecapacitorasthepowersourcewasproposed.Electriccurrentdischargedfromcapacitorswasusedtoheatafinemetalwiresuspendedintheflowfield.Theoildropletsattachedtothewirewerevaporizedandsmokefilamentsfollowedtheflowmotions.Adigitalcamerawasusedtorecordtheimagesofthesmokefilaments.Theactionsofdischargingandcamerashutterweretriggeredbysignalsfromamicrocontrollertoensuretheaccuratetiming.Clearimagesofthestreaklineswerecapturedatafreestreamvelocityupto12.9m/s,muchhigherthanthelimitsoftheexistingtechniques.