粒子测速仪内窥式粒子成像测速系统(Endo-PIV)LaVision 采用粒子图像测速来测量间隔区填充管道内液体和液体/气体流动液体速度场分布形态

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Liquid and liquid/gas flows through spacer filled channels were studied using ParticleImagingVelocimetry (PIV)   to provide experimental support for velocity distributions obtained from Computational Fluid Dynamics studies available in the literature. It is shown that PIV is a suitable technique for measuring velocity profiles in spacer filled channels, although care has to be taken when interpreting the results.
PIV measurements were carried out for an entire flow cell(5cm×15 cm), a smaller area of roughly 7mm×8mm and for a single spacer cell(2.5mm×3mm). The experimental results show that fluid flow is well distributed across the entire flow cell in the case of single-phase flow. The recordings of the single spacer cell showed that liquid flow is mainly parallel to the spacer filaments and therefore the direction of flow changes 90◦ over the height of the channel. Introduction of air bubbles introduced strong local velocity gradients.The liquid velocity in two-phase flows is shown to be more unsteady than in the case of single-phase flow, which is advantageous when trying to prevent fouling or concentration polarization.

 仪器简介：
        在内燃机引擎，透平机械或泵体中进行PIV测量通常需要设计加工昂贵带有光学透明窗口或全光学玻璃模型。采用相机内窥镜或激光内窥镜可以在只开尺寸很小的通光孔径。先进的DaVis软件平台，集成了对较大光学成像畸变进行自动校正计算功能。LaVision提供的专门用于包括PIV测量应用的相机和激光内窥镜，通光波段涵盖可见光和紫外光波段。紫外光波段可以应用于燃烧和流动现象中的激光诱导荧光测量系统中。内窥式测量大大降低了对被测对象的机械改动和加工的工作量和时间以及投资成本。      

粒子测速仪内窥式粒子成像测速系统(Endo-PIV)LaVision 采用粒子图像测速来测量间隔区填充管道内液体和液体/气体流动液体速度场分布形态信息由北京欧兰科技发展有限公司为您提供，如您想了解更多关于粒子测速仪内窥式粒子成像测速系统(Endo-PIV)LaVision 采用粒子图像测速来测量间隔区填充管道内液体和液体/气体流动液体速度场分布形态报价、型号、参数等信息，欢迎来电或留言咨询。

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