{"title":"Experimental method for investigating the formation of flow patterns in a very wide gap Taylor-Couette flow (η = 0.1).","authors":"M. H. Hamede, S. Merbold, C. Egbers","doi":"10.1515/teme-2022-0107","DOIUrl":null,"url":null,"abstract":"Abstract In this study, we investigate the turbulent Taylor-Couette (TC) flow experimentally. First, in order to show the formation of the different patterns in the flow, the flow was seeded with kalliroscope particles and by applying a vertical laser sheet we were able to capture the different patterns in the flow. For a further detailed study, the flow field was measured in horizontal planes at different cylinder heights using Particle image velocimetry (PIV). The formation of patterns appears for the counter-rotation configuration where the outer cylinder rotates in the opposing direction of the inner cylinder rotation. For low shear Reynolds numbers, stable Taylor vortices fulfilling the whole gap appear for very low counter-rotation rates. While for the same rotation rates and higher shear Reynold number, large scale patterns with shorter length scale compared to the classical Taylor vortices appears, which can be described as interlaced fingers from in and outflow. The existence of these patterns leads to enhanced angular momentum transport.","PeriodicalId":56086,"journal":{"name":"Tm-Technisches Messen","volume":"46 1","pages":"332 - 339"},"PeriodicalIF":0.8000,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tm-Technisches Messen","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1515/teme-2022-0107","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 3
Abstract
Abstract In this study, we investigate the turbulent Taylor-Couette (TC) flow experimentally. First, in order to show the formation of the different patterns in the flow, the flow was seeded with kalliroscope particles and by applying a vertical laser sheet we were able to capture the different patterns in the flow. For a further detailed study, the flow field was measured in horizontal planes at different cylinder heights using Particle image velocimetry (PIV). The formation of patterns appears for the counter-rotation configuration where the outer cylinder rotates in the opposing direction of the inner cylinder rotation. For low shear Reynolds numbers, stable Taylor vortices fulfilling the whole gap appear for very low counter-rotation rates. While for the same rotation rates and higher shear Reynold number, large scale patterns with shorter length scale compared to the classical Taylor vortices appears, which can be described as interlaced fingers from in and outflow. The existence of these patterns leads to enhanced angular momentum transport.
期刊介绍:
The journal promotes dialogue between the developers of application-oriented sensors, measurement systems, and measurement methods and the manufacturers and measurement technologists who use them.
Topics
The manufacture and characteristics of new sensors for measurement technology in the industrial sector
New measurement methods
Hardware and software based processing and analysis of measurement signals to obtain measurement values
The outcomes of employing new measurement systems and methods.