Domestic large field schlieren

NegociableActualización en03/12

modelo

Naturaleza del fabricante: Productores

Categoría de producto

Lugar de origen

Consulta en línea

Descripción general

The WKJWY-200 large field schlieren can eliminate the integration display of flow field information in this test optical path by conventional shadowgraphs and schlierens, and only display the flow field information of the interested section. By focusing on multiple cross-sections to display the schlieren flow field, the goal of three-dimensional flow field display can also be achieved.

Detalles del producto

Large field schlierenIntroduction to WKJWY-20:

The focusing shadowgraph is mainly used for imaging cross-sectional shadowgraphs in flow fields. Its imaging surface is about 2-5mm behind the cross-section and is used for fine display measurement of flow fields. It is based on the principle that the refractive index gradient of light in the measured flow field is proportional to the airflow density of the flow field. The change in density gradient in the flow field is transformed into the change in relative light intensity on the recording plane, making the areas with severe density changes such as shock waves and compression waves in the compressible flow field observable and distinguishable images, and thus recorded. It mainly consists of a laser, a laser beam expander, a Fresnel lens, a grating, a focusing imaging objective, a knife edge grating, an imaging screen, and a camera. Capable of imaging the focused cross-section of the flow field.

WKJWY-200Focused shadowgraphIt can exclude the integration display of flow field information in this test optical path by conventional shadowgraph and schlieren, which only display the flow field information of the interested section. By focusing on multiple cross-sections to display the schlieren flow field, the goal of three-dimensional flow field display can also be achieved.

Large field schlierenWKJWY-20 Technical Specifications:

parameter	MAX	MIN	remark
field of view	Φ1000mm	Φ100mm	Determined by working distance
working distance	20m	2m	Equivalent to 20 fields of view
Screen distance	40m	4m	Equivalent to twice the working distance
screen size	Φ2000mm	Φ200mm	Equivalent to twice the field of view
Imaging sensors	Digital SLR camera, high-speed camera, recording dry board
Focus on thickness	2-30mm
lighting equipment	Ordinary laser light source, LED light source
other	Can be equipped with digital image processing software

Application fields:As a commonly used optical measurement method, it has a wide range of applications in fluid mechanics experiments, and can be used to observe the boundary layer of airflow, combustion, shock waves, cold and hot convection in gases, as well as wind or water tunnel flow fields. It has the advantages of simple results, good imaging technology, and high accuracy. It converts fluid density changes that are invisible to the human eye into light intensity information and records them, making the observation of the flow field more direct and vivid. Especially with the development of color schlieren technology, the captured images are more beautiful.

System composition: It mainly consists of a laser, a laser beam expander, a Fresnel lens, a grating, a focusing imaging objective, a knife edge grating, an imaging screen, and a camera.

The light source and laser beam expander provide uniform illumination for the system and provide sufficient brightness to meet the requirements of clear imaging when taking high-speed camera photos.

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