A full-field measurement system and method for high-temperature and high-speed turbulent heat flux

Abstract

The invention relates to a full-field measuring system and a method for heat flux of a high-temperature high-speed turbulence. The system comprises a multi-source information fusion module, a synchronization controller, a dispenser of thermal long afterglow luminescent particles, a laser, a high-speed optical imaging system, and a combustion panel. Wherein the multi-source information fusion module performs complementary integration of the multi-source information for determining high-frequency information such as the density, velocity and temperature of a high-temperature and high-speed gaseous flow field characterized by a thermal tracer; the synchronization controller controls a supply of the combustion gas to the combustion panel, and controls the high-speed optical imaging system forimaging a time series long thermal afterglow image of the thermal tracer; the nitrogen gas is supplied to the particle dispenser to provide an input of the luminescent particle to the combustion panelas a tracer; the laser provides a laser light to the combustion panel. According to the full-field measuring system and the method for the heat flux of the high-temperature high-speed turbulence, themulti-source information fusion technology is fully utilized, the density, speed and temperature of the full field are synchronously measured, and the heat flux of the high-temperature high-speed turbulence is measured.

Description

technical field [0001] The invention relates to a measurement system and method, in particular to a full-field measurement system and method for high-temperature, high-speed, turbulent heat flux. Background technique [0002] In high-temperature and high-speed turbulent flow, density, velocity, and temperature are highly coupled, which has always been a difficult problem in turbulence research. It is necessary to simultaneously measure high-frequency, high-precision measurement of full-field density, velocity, and temperature. High-temperature turbulent heat flux involves simultaneous measurement of density, temperature, and velocity, and high-frequency multi-source full-field information in high-temperature environments is required. The phosphorescent particle velocity measurement and temperature measurement technology in the current published patent application documents can simultaneously measure the velocity and temperature of the entire field; the molecular calibration ...

AI Technical Summary

Problems solved by technology

Laser-induced fluorescence technology relies on ambient gas components, and fluorescence often only has a lifetime of nanoseconds to microseconds. It is difficult to quantitatively measure the velocity field and temperature field, and the requirements for lasers and imaging systems are very high.

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