基于激光的分层液-液管流与横流中的射流相互作用测量

2019/07/23   下载量： 0 次

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应用领域 其他
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采用LaVision公司的DaVis8.4软件平台搭建了粒子成像PIV,粒子跟踪测速PTV和平面激光诱导荧光测量平台。并用此平台对分层液-液管流与横流中的射流相互作用进行了测量和研究。

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At low velocities, horizontal liquid liquid flows undergo gravitationally induced stratification which in many practical applications complicates significantly the direct measurement of the average properties of the flow. The extent of flow stratification however, can be limited through inline mixing leading to the formation of liquid liquid dispersions with more homogenous properties In this work we focus on the use of a ctive mixing methods using jets in cross flows JICFs In this paper, a dedicated experimental flow facility for the investigation of such flows is presented along with the accompanying laser based optical measurement
techniques and asso ciated algorithms that have been developed for this investigation The facility allows simultaneous, space and time resolved phase and velocity information to be generated via planar laser induced fluorescence ( and particle velocimetry (PIV/ with stereo PIV used to provide information on the third (out of plane) velocity component. Preliminary experimental results are presented which demonstrate the capabilities of this arrangement for optically examining stratified liquid liquid flows interacting with JICFs, leading to new insights into these complex flows The key results include phenomena of jets interacting with the liquid- liquid interface, recirculation zones that lead to further mixing, the presence of complex compound droplets, droplet size distributions and water concentration profiles.

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北京欧兰科技发展有限公司
金牌会员 丨 第17年
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