摘要
NumericalsimulationsoftheflowinthedrafttubeofaFrancisturbinearecarriedoutinordertoelucidatetheeffectsoftangentialvelocityonflowstability.Influenceofthelocationofthemaximumtangentialvelocityisexploredconsideringtheequalityofthetotalenergyattheinletofthedrafttube.Itisfoundthattheamplitudeofthepressurefluctuationdecreaseswhenthelocationofthemaximumofthetangentialvelocitymovesfromthecentretothewallonthecrosssection.Thus,thestabilityoftheflowinthedrafttubeincreaseswiththemovingofthelocationofthemaximumtangentialvelocity.However,therelativehydrauliclossincreasesandtherecoverycoefficientofthedrafttubedecreasesslightly.
出版日期
2014年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)