{"title":"Analytical and Computational Analysis of Flow Splitting in Multiple, Parallel Channels Systems","authors":"A. Lazarte, J. Ferreri","doi":"10.4236/WJNST.2016.63019","DOIUrl":null,"url":null,"abstract":"Previous analytical results on flow splitting are generalized to consider \nmultiple boiling channels systems. The analysis is consistent with the \napproximations usually adopted in the use of systems codes (like RELAP5 and TRACE5, among others) commonly applied to perform \nsafety analyses of nuclear power \nplants. The problem is related to multiple, identical, parallel boiling \nchannels, connected through common plena. A theoretical model limited in \nscope explains this flow splitting without \nreversal. The unified analysis performed and the confirmatory computational \nresults found are summarized in this \npaper. New maps showing the zones where this behavior is predicted are also shown considering again twin \npipes. Multiple pipe systems have been found not easily amenable for \nanalytical analysis when dealing with more than four parallel pipes. However, \nthe particular splitting found (flow along N pipes dividing in one standalone \npipe flow plus N -1 identical pipe flows) has been verified up to fourteen pipes, involving \ncalculations in systems with even and odd number of pipes using the RELAP5 systems \nthermal-hydraulics code.","PeriodicalId":61566,"journal":{"name":"核科学与技术国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"核科学与技术国际期刊(英文)","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.4236/WJNST.2016.63019","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Previous analytical results on flow splitting are generalized to consider
multiple boiling channels systems. The analysis is consistent with the
approximations usually adopted in the use of systems codes (like RELAP5 and TRACE5, among others) commonly applied to perform
safety analyses of nuclear power
plants. The problem is related to multiple, identical, parallel boiling
channels, connected through common plena. A theoretical model limited in
scope explains this flow splitting without
reversal. The unified analysis performed and the confirmatory computational
results found are summarized in this
paper. New maps showing the zones where this behavior is predicted are also shown considering again twin
pipes. Multiple pipe systems have been found not easily amenable for
analytical analysis when dealing with more than four parallel pipes. However,
the particular splitting found (flow along N pipes dividing in one standalone
pipe flow plus N -1 identical pipe flows) has been verified up to fourteen pipes, involving
calculations in systems with even and odd number of pipes using the RELAP5 systems
thermal-hydraulics code.