LaVision粒子测速仪FlowMaster-Endo 叶片电极诱导电流体力学羽流的数值模拟和PIV实验研究

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In this paper, a comparative study between numerical and experimental results from
PIV measurements is presented in the case of two-dimensional electrohydrodynamic plumes that arise when a sharp metallic blade, submerged in non conducting liquids, supports high electric potential. Experiments and numerical simulations have been conducted in order to confront the both approaches. A very good agreement has been found through velocity profiles and velocity fields which testifies the relevance of our numerical model. For high potentials the jet flow issued forth from the blade becomes unsteady and starts to flap on the vertical wall. Some captions of the temporal evolution of the isocontours of charge density which is not accessible from experiment are presented thanks to the numerical simulation.

 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。      

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