{"title":"Transition phenomena and intermittency on a Mach 6 flat plate evaluated by three independent flow parameters","authors":"Jens Lunte, Erich Schülein","doi":"10.1007/s00348-025-04034-9","DOIUrl":null,"url":null,"abstract":"<div><p>Heat transfer rates, wall pressure and density fluctuations of a flat-plate boundary layer within the laminar–turbulent transition zone were measured at Mach 6 freestream conditions. The combination of the three independent flow parameters enables an extensive insight into the transition phenomena, improves the interpretation of the data and identifies the limitations of the respective measurement techniques. Comparisons between the measurement data culminate in the quantitative description of the transition progress by means of the intermittency distributions, which were calculated from each flow parameter individually. The derived transition locations differ by up to 9.3% in streamwise direction in relation to the average transition Reynolds number.</p></div>","PeriodicalId":554,"journal":{"name":"Experiments in Fluids","volume":"66 7","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00348-025-04034-9.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experiments in Fluids","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s00348-025-04034-9","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Heat transfer rates, wall pressure and density fluctuations of a flat-plate boundary layer within the laminar–turbulent transition zone were measured at Mach 6 freestream conditions. The combination of the three independent flow parameters enables an extensive insight into the transition phenomena, improves the interpretation of the data and identifies the limitations of the respective measurement techniques. Comparisons between the measurement data culminate in the quantitative description of the transition progress by means of the intermittency distributions, which were calculated from each flow parameter individually. The derived transition locations differ by up to 9.3% in streamwise direction in relation to the average transition Reynolds number.
期刊介绍：
Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.
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