Portable projection type schlieren

Portable projection type schlierenIt can be used to observe the distribution, propagation process, and intensity of disturbances caused by various factors in transparent media. Scientific research on changes in flow field density in disciplines such as laser matter interaction, laminar flow, multiphase flow, heat and mass transfer, shock waves, supersonic flow, combustion, flames, explosions, plasmas, internal ballistics, and certain chemical reactions.Scientific research on changes in flow field density in disciplines such as laser matter interaction, laminar flow, multiphase flow, heat and mass transfer, shock waves, supersonic flow, combustion, flames, explosions, plasmas, internal ballistics, and certain chemical reactions.TaipuleShadowgraph analyzerIt is a traditional and traditional way of using *.

Technical Specifications:

The optical material of the main reflector is K9 optical glass, with stress ≤ 2 and processing surface accuracy<1/10 λ; the reflector surface is vacuum coated with aluminum and silicon dioxide protective film. The surface of the small reflector is vacuum coated with aluminum and silicon dioxide protective film, with a reflection coefficient of ≥ 90% and a surface accuracy of<1/10 wavelength.

The main optical components of the system can be divided into three parts: the light source slit system, the main spherical reflector adjustment mechanism, and the knife edge imaging system. Among them, the light source slit system and one of the main spherical mirrors form a collimation system, and the knife edge imaging system and one of the main spherical mirrors form a schlieren viewing system, which are respectively arranged on two platforms.

The schlieren technique, also known as the schlieren technique, includes black and white schlieren techniques, color schlieren techniques, and interference schlieren techniquesRipple ShadowThe commonly used optical methods for displaying and measuring flow fields in systems. The moir é method was first proposed by Toepler in 1864 and applied to the detection of refractive index in optical glass.

In 1952, Holden and Norht wereRipple ShadowThe system uses a white light splitting prism to achieve color schlieren imaging, expanding the application range of schlieren technology; In 1962, Bland and Pelick used the schlieren method to study the pressure and temperature effects of water, and pointed out that the schlieren method was actually used for displaying the flow field of water tunnels; In 1974, Merzkirch classified the schlieren technique in compressible flow fields, which involvedRipple ShadowThe research on interference schlieren method conducted on the system, including grating interference, prism interference, and Moire fringe interference, is classified as schlieren technology and has been recognized by domestic peers.