{"title":"Experimental investigation on the characteristics and controlling of flow separation inside the centrifugal diffuser","authors":"Q. Si, Y. Shouqi, P. Cherdieu, G. Bois","doi":"10.11729/SYLTLX20150038","DOIUrl":null,"url":null,"abstract":"The flow inside a vane-island diffuser has been studied experimentally using directional probe traverses and time-resolving stereoscopic particle image velocimetry. A classical three holes probe was used covering most of the complete section of the diffuser from hub to shroud and from the pressure to the suction side in order to evaluate the static pressure recovery at five mass flow rates. The difference between theoretical and measurement values of pressure recovery factors shows that the great loss of the static pressure comes from the vaned part when the flow rate is higher than the designed value of the diffuser. Previous 2C-2D PIV measurement results were also given to verify that flow separation area exists on the pressure side under the above two conditions. Six schemes of vortex generators were designed to control the boundary-layer separation. Mean flow characteristics of the scheme obtaining the best pump performance was then analyzed.","PeriodicalId":35450,"journal":{"name":"实验流体力学","volume":"138 1","pages":"48-53"},"PeriodicalIF":0.0000,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"实验流体力学","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.11729/SYLTLX20150038","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
The flow inside a vane-island diffuser has been studied experimentally using directional probe traverses and time-resolving stereoscopic particle image velocimetry. A classical three holes probe was used covering most of the complete section of the diffuser from hub to shroud and from the pressure to the suction side in order to evaluate the static pressure recovery at five mass flow rates. The difference between theoretical and measurement values of pressure recovery factors shows that the great loss of the static pressure comes from the vaned part when the flow rate is higher than the designed value of the diffuser. Previous 2C-2D PIV measurement results were also given to verify that flow separation area exists on the pressure side under the above two conditions. Six schemes of vortex generators were designed to control the boundary-layer separation. Mean flow characteristics of the scheme obtaining the best pump performance was then analyzed.
期刊介绍：
Journal of Experiments in Fluid Mechanics is a synthesis of academic and technical developments publically released bimonthly. The present editor in chief is academician Jialing Le. The main interest of the journal is placed on new information， cutting edge achievements and novel trends in the field of experimental fluid mechanics， particularly aerodynamics.
Journal of Experiments in Fluid Mechanics is elected as Chinese key journal in the field of aeronautics and astronautics. It is included by notable international databases such as EI Compendex （2007-2012）， Chemical Abstracts ‘CA’， Russian Abstracts Journal‘РЖ’， and Japanese Science and Technology Abstracts Letter‘JST’， as well as domestic databases such as Chinese Science Quotation Data System，Chinese Academic Journal Evaluation Data System，Chinese Academic Journal Abstracts，Chinese Mechanics Abstracts，Chinese Academic Journals （disc），ChinaInfo， and so on.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
