简介:Inthisarticle,theunifiedmathematicalmodelforsplashdropletsandsuspendedmistofatomizedflowwasestablished,whichclassifiestheatomizedsourcesintothesplashsourceandthesuspendedsource.Forthesplashsource,theLagrangianmethodwasusedtosimulatetherandommotionofsplashwaterdroplets,andforthesuspendedsourcethetheoryofair-watertwo-phaseflowwasusedtosimulatethemistflowmovinginparticleclouds.Therainfallintensityoftheatomizedflowwasobtainedbysummarizingtherainfallintensitiesrelativetotheabovetwotypesofatomizedsources.Bothexperimentaldataandprototypeobservationdatawereusedfortheverificationofthemathematicalmodel.Forboththedistributionofrainfallintensity,andtheouteredgeoftheatomizedflow,thesimulationresultsareinagreementwiththeexperimentaldataorprototypeobservationdata.
简介:压力打漩atomizers经常被采用产生一朵水薄雾水花,典型地在火采用了抑制。在现在的学习,分散(速度和锥角度)的试验性的描述和粉碎成原子(落下尺寸轴的进化)被执行跟随以前发达的方法论,与水花的起始的区域的特定的参考。基于激光的技术习惯于份量上评估考虑现象:速度地通过粒子图象Velocimetry分析被重建;落下尺寸分发被一台MalvernSpraytec设备测量,加亮沿着水花轴的第二等的粉碎成原子和随后的结合。而且,关系的一个全面集合深奥参数作为预兆被验证,跟随一条inviscid液体途径。建议模型在压力打漩atomizers上与早研究相关并且首先让步决定起始的速度和锥角度。水花厚度也被预言,为Sauter吝啬的直径的经典关联被显示向好同意提供试验性的结果。分析在80酒吧的起作用的压力被执行;二个注射者被采用展示不同的孔直径和流动数字,作为这水花类型学的一种参量的途径。
简介:Inordertoinvestigatethefiresuppressioneffectivenessofwatermistwithmetalchlorideadditives,ultrafinewatermistsofthesesaltswithdiametersabout10μmwereintroducedintoCH4/airnon-premixedflameinthecupburner.Resultsshowedthatthesedropletshardtomakeitselftotheflamefrontunderthecupburnerflowconditionsfunctionedasacarrierofthevaporizedsolidparticlesoritsdecomposedmaterials.Themetalchlorideimprovedfiresuppressionefficacyofwatermistwhichwereaffectedbythetypeandconcentrationofmetalchloride.Onamassbasis,thereisafiresuppressioneffectivenessrelationshipofMgCl2