3d-3c Particle Image Velocimetry System and Method Based on Integrated Imaging Technology
A particle image velocimetry, 3D-3C technology, applied in the direction of measuring device, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve the problem that it is difficult to display the details of the flow field in the particle field, limit the accuracy of three-dimensional particle image velocimetry, and affect Particle field reconstruction accuracy and other issues, to avoid slender deformed tracer particles, improve flow field reconstruction accuracy, and fast calculation speed
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[0031] The 3D-3C particle image velocimetry system and method based on the integrated imaging technology of the present invention include:
[0032] 1) For the stereoscopic lighting part, a beam of laser light emitted from the laser is expanded through a Powell prism and a cylindrical lens, and then shaped by a knife edge to form a parallel three-dimensional stereoscopic light. The stereoscopic light is irradiated into the flow field to be measured, and the three-dimensional Illumination of the pre-spread tracer particles in the flow field velocimeter.
[0033] 2) The image acquisition part, according to the integrated imaging principle, adopts multiple CCD cameras arranged in an arc to form a camera array. All cameras are focused on the central area of the test field, and the test field is located in the center of the camera image. This method can effectively suppress tracer particles slimming. Through computer control, the trigger board is used to generate a trigger signal...
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