基于SPIV技术的精细流场测试实验教学平台设计

DESIGN OF EXPERIMENTAL TEACHING PLATFORM FOR FINE FLOW FIELD TEST BASED ON SPIV TECHNOLOGY

  • 摘要: SPIV技术作为流体力学精细流场测量中先进的测试技术可以将复杂的流场三维运动可视化,将其应用于实验教学可以提高学生学习兴趣。本实验教学平台将旋转流场可视化,通过数据采集与图像后处理分析得到旋转流场的三维速度场,最终观察到旋转流场的周向流速是转速越快沿轴线分布均匀度越高的旋转运动,从圆管中心轴线向壁面不断增大。让学生能够在了解先进流场测试技术发展的同时锻炼动手能力与思维能力,提高学习效果。

     

    Abstract: As the most advanced testing technology of fluid mechanics fine flow field measurement, SPIV technology can visualize the three-dimensional motion of complex flow field, and its application in experimental teaching can improve students ' interest in learning. The experimental teaching platform visualizes the rotating flow field. Through data acquisition and image post-processing analysis, the three-dimensional velocity field of the rotating flow field is obtained. Finally, it is observed that the circumferential velocity of the rotating flow field is a rotating motion with faster rotation speed and higher uniformity of distribution along the axis, which increases from the central axis of the tube to the wall. So that students can understand the development of advanced flow field testing technology while exercising hands-on ability and thinking ability, improve learning outcomes.

     

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