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

A technology of supersonic flow and three-dimensional structure, which is used in the testing of machine/structural components, fluid dynamics test, measuring device, etc. low cost effect

Active Publication Date: 2013-01-02
NAT UNIV OF DEFENSE TECH
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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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  • Display system and display method for NPLS (nano-tracer planar laser scattering) three-dimensional structure of supersonic flow field
  • Display system and display method for NPLS (nano-tracer planar laser scattering) three-dimensional structure of supersonic flow field
  • Display system and display method for NPLS (nano-tracer planar laser scattering) three-dimensional structure of supersonic flow field

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Embodiment Construction

[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0027] see figure 1 , the supersonic flow field NPLS three-dimensional structure display system of the present invention is used to display the supersonic flow field in the test chamber 10, including a nanoparticle generator 20, a pulse laser 30, a synchronous controller 40, multiple CCD cameras 50 and a computer 60.

[0028] The test chamber 10 includes a section of light-transmitting portion 12 , which is surrounded by optical glass, so that multiple CCD cameras 50 can image the supersonic flow field in the test chamber 10 .

[0029] The nanoparticle generator 20 broadcasts nanoparticles. The nanoparticle generator 20 is driven by a high-pressure gas source, and the concentration of the output nanoparticles can be achieved by adjusting the pressu...

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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 present invention relates to the technical field of NPLS three-dimensional structure of supersonic flow field, in particular, to a high-temporal-spatial resolution supersonic flow field NPLS three-dimensional structure display system based on nanoparticle tracing. 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 analyze the change of the flow field by using the change law of light in the variable refractive index 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 tracers. [0003] In the first type of methods, typical techniques s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 易仕和陈植何霖赵玉新田立丰朱杨柱
Owner NAT UNIV OF DEFENSE TECH
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