在有約束、軸對(duì)稱拋撒條件下液體玻碎、霧化實(shí)驗(yàn)現(xiàn)象和實(shí)驗(yàn)技術(shù)的研究.pdf

1、中國(guó)科學(xué)技術(shù)大學(xué)碩士學(xué)位論文在有約束、軸對(duì)稱拋撒條件下液體玻碎、霧化實(shí)驗(yàn)現(xiàn)象和實(shí)驗(yàn)技術(shù)的研究姓名：萬(wàn)群申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：流體力學(xué)指導(dǎo)教師：韓肇元2001.5.1Aninvestigationofexperimentalphenomenaandtechnologyforaxisymmetricaldissemination，breakupandatomizationofliquidwithsomeconstrainingAbstra

2、ctThedisseminationbreakupandatomizationofliquidisanimportantresearchfieldforitsbackgroundinEngineeringapplicationandhighacademicvalueAsthebackgroundofFuelAirExplosive(FAE)，inthispaperaninvestigationoftheprocessofprimaryb

3、reakupsecondarybreakupandatomizationundertheconditionofaxisymmetricaldisseminationofliquidwitllsomeconstrmningwasconductedThebreakupandatomizationofliquidinthenearfieldhasbeenobservedbyusingschlierenopticalsystemandthedr

4、opletsizedistribution(DSD)includingthechanginginmeandiametersofdropletswiththetimeandspaceinthefar—fieldhasbeenmeasuredbyusinglaserscatteringmeasurementsystemThemainresearchescanbemainlYdividedintothreepartsAnaxisymmetri

5、caldisseminationdevicewithadjustablegaDswaspresentedanddeveloped，whichcombineswithdiaphragmlessshocktubetorealizethedisseminationof1iquidwithconstrainingWjhavedone10tsofexperimentstostudytheruleofatomizationofliquidinthe

6、nearfieldandfarfieldunderdi舵rentconditions，especially晰tllgapsdifferentinwidthandwithoutgapsSchlierenphotographsinthenearfieldshowthattheincreaseofpressuremakethewholeliquideasytobreakupintoirregularliquidelements，suchas1

7、igamentsbranchesofliquidandthattheseelementsaresmallerwhereisfurtherwayfromthedisseminationdeviceInthefarfield，theexperimentalresultsoflaserscatteringapparatusshowthatatthefixedobservingpointtheSauterMearlDiameter(SMD)of

8、theliquiddropsgeneratedbythesecondarybreakupdecreaseswitllthetimeTheaugmentofpressurebenefitsatomizationInthefar—fieldthefurtherthelocationisthemoretheratioofbigsizedropletsincreasesInadditioninordertoealibratethelasersc

9、atteringsystemwhichismadebyourlaboratoryamicrophotographofglasssandsandanewcastingdevicewithfourlayersofnetshavebeenusedforthispurposeWjfoundthattheconcentrationofcloudshavenoeffectontheexperimentalresultsofthismeasuring