Customized particle image velocimeter supplier

NegociableActualización en03/11

modelo

Naturaleza del fabricante: Productores

Categoría de producto

Lugar de origen

Consulta en línea

Descripción general

The digital particle image velocimeter (PIV) is an imaging technique that measures the velocity distribution within a set plane using a laser light source. It is widely used in various fluid dynamics studies and is one of the so called Time of Flight (TOF) measurement techniques. The basic principle of PIV technology is to use a laser light source to illuminate the flow field and measure the particles visualized in the flow. A dual pulse YAG laser and dual shutter camera can simultaneously record 2 particle images, with a very short interval between the two images, generally less than 100us. Particle image velocimetry

Detalles del producto

Digital particle image velocimeterIntroduction:

PIV is an imaging technique that measures the in-plane velocity distribution set by a laser beam source. It is widely used in various fluid dynamics studies and is one of the so called Time of Flight (TOF) measurement techniques. The basic principle of PIV technology is to use a laser light source to illuminate the flow field and measure the particles visualized in the flow. A dual pulse YAG laser and dual shutter camera can simultaneously record 2 particle images, with a very short interval time between the two images, generally less than 100us

Displacement and velocity calculation evaluation

The camera successfully recorded the image, and the next step is to perform PIV analysis. The image is divided into small search fields, typically 32 × 32 pixels. These small search areas are called interrogation windows. Apply these interpolation windows for cross-correlation between two images, with each interpolation window obtaining a correlation plane. The position of the interrogation window in the two images is the same (in standard FFT cross-correlation, interrogation window transfer algorithm).

Then, peak detection and displacement evaluation are applied to obtain the dominant displacement in each window. Since the pixel size of the traffic and the time interval between two images are known, the speed can be calculated. The size of one pixel of traffic is calibrated by simple speed.

Digital particle image velocimeterTechnical parameters:

project	Technical specifications requirements
Test field of view	350mm×300mm
test speed	＜800m/s
Dual pulse laser	Pulse energy 100mJ * 220mJ * 230mJ * 2500mJ * 2; Single pulse frequency not less than 10Hz; wavelength 532nm; Film light source thickness ≤ 1mm, focal length adjustable from 0.5-1.5m
Digital Camera Imaging System	Resolution not less than 2456 * × 2056 (5M); The full resolution acquisition rate shall not be less than 16fps; Pixel size 3.45 μ m; Gray level ≥ 12 bits; Double exposure time interval ≤ 5us; Includes: 50mm/f1.4 lens; CamLink interface image acquisition card; 532 ± 5nm narrowband filter
Synchronous controller	8 independent output channels with a time resolution of 1ns
Pressure particle generator	The material can be DEHS, edible oil, hollow glass microspheres, or solid powders with particle sizes less than micrometers, with a gas supply pressure of 1 Mpa;
Image processing software	Support 4 iterations, automatically calculate the doubled size iteration based on the size of the reading area and step size parameters; Capable of window deformation: automatically cyclically adjusting the deformed particle image based on cross-correlation calculation of window and vector parameters; Equipped with automatic vector filtering function: supports iterative calculation, window deformation, and batch processing to automatically remove erroneous vectors; Equipped with navigation calculation function: It can import existing reference results and provide reference values for later data processing, effectively reducing later calculation time and improving calculation accuracy. Equipped with automatic model boundary template shielding calculation technology; Integrated multi directory large-scale data automatic processing function, with a single directory capable of processing and calculating no less than 100 hours or 100000 data files at a time; Support multi-threaded computing technology: automatically optimize multi-threaded parallel acceleration algorithms based on the number of system hardware CPUs; Having image averaging function: batch image averaging processing function;
Model: WKGX-2D-PIV-200, Brand: Wuke Optics

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