System for realizing simultaneous measurement of combustion temperature field and velocity field

Abstract

The present invention relates to a system for realizing simultaneous measurement of a combustion temperature field and a velocity field, comprising a first CCD camera, a first light split wedge and alaser. A second CCD camera is disposed at bottom left of the first CCD camera and an imaging plate is mounted at the right side of the second CCD camera. A Longkey grating is disposed at the right side of the imaging plate and a first plane reflecting mirror is mounted at the right side of the Longkey grating. A second light split wedge is disposed below the first light split wedge and the first light split wedge is located below a second plane reflecting mirror. The laser is mounted at the right side of a synchronous controller and the synchronous controller is located below the second CCD camera. The system combines a particle image velocimetry (PIV) with a light deflection imaging principle for measuring a three-dimensional velocity field of a flow field using the PIV and measuring a three-dimensional temperature field of the flow field using the light deflection imaging principle. While the two are combined, the three-dimensional velocity field and temperature field of the combustion field are simultaneously obtained.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a system capable of simultaneously measuring combustion temperature field and velocity field. Background technique [0002] The full-field display and measurement of the combustion flow field is a hot issue that has not been fully resolved in the fields of engineering thermophysics and information optics. Techniques are available for simple laminar flame parameter measurements, including temperature measurement using techniques such as laser-induced grating spectroscopy, coherent anti-Stokes Raman scattering, two-line atomic fluorescence, and point measurements of local velocities using laser Doppler velocimetry , using tunable semiconductor laser absorption spectroscopy to obtain concentration and temperature, and cavity-enhanced technology to detect trace flame components. However, modern three-dimensional simultaneous measurement and display technology of the temperature...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a system that can realize simultaneous measurement of combustion temperature field and velocity field, so as to solve the three-dimensional simultaneous measurement and display technology of the temperature field and velocity field of the modern combustion flow field proposed in the above-mentioned background technology. , the measurement of temperature field and velocity field has the problems of high cost, time-consuming and low efficiency

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