Display system and display method for NPLS (nano-tracer planar laser scattering) three-dimensional structure of supersonic flow field

Abstract

The invention provides a display system and a display method for the NPLS (nano-tracer planar laser scattering) three-dimensional structure of a supersonic flow field. The display system is used for displaying the supersonic flow field in a test cabin, and comprises a synchronous controller, a computer connected with the synchronous controller and used for controlling the synchronous controller to send out a control signal, and a nano-particle generator, wherein the nano-particle generator is used for scattering nano-particles in the test cabin; the display system further comprises a pulse laser connected to the synchronous controller, wherein the laser beam emitted by the pulse laser forms a curved-surface light source or a conic light source via a lens group, and illuminates the supersonic flow field carring the nano-particles in the test cabin; a plurality of CCD (charge coupled device) cameras connected to the synchronous controller are used for imaging the supersonic flow field simultaneously and thus obtaining a plurality of nano-particle images of the supersonic flow field under different viewing angles simultaneously, and transmitting the images to the computer; the computer is used for analysing the plurality of nano-particle images of the supersonic flow field under the different viewing angles, and measuring a curved-surface flow field structure or reconstructing the three-dimensional structure of the flow field.

Description

technical field [0001] The invention relates to the technical field of a supersonic flow field NPLS three-dimensional structure, in particular, to a high temporal and spatial resolution supersonic flow field NPLS three-dimensional structure display system based on nanoparticle tracking. In addition, the present invention also relates to a display method comprising the above-mentioned supersonic flow field NPLS three-dimensional structure display system. Background technique [0002] From an optical point of view, the display methods of the flow field structure can be divided into two categories: the first type is to use the change law of light in the variable refractive index field to analyze the change of the flow field; the second type is to use the tracer to follow The fluid moves together and the structure of the flow field is analyzed based on the light scattering or excitation properties of the tracer. [0003] The typical ones in the first type of methods are schlier...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a supersonic flow field NPLS three-dimensional structure display system and method to solve the technical problem that the prior art cannot display the fine three-dimensional structure of the supersonic flow field NPLS on the surface of a spiral or curved object

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