A method for positioning and distinguishing a high-temperature gas-solid interface chemical reaction zone

By using radiation spectral acquisition and high-speed camera to capture radiation images, the problem of unclear location of the chemical reaction zone at the high-temperature gas-solid interface has been solved, enabling precise location and spatial distribution characteristic analysis of the high-temperature interface, and supporting the development of thermal protection technology for aircraft.

CN119880147BActive Publication Date: 2025-11-21INST OF MECHANICS CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202510040074.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2025-11-21
Estimated Expiration
2045-01-10

AI Technical Summary

Technical Problem

Existing technologies lack a clear method for locating the chemical reaction zone at the high-temperature gas-solid interface of heat-resistant materials, resulting in a lack of clear reference standards for experimental measurement of gas-solid coupling effects and a lack of experimental verification for numerical simulation results.

Method used

A radiation spectrum acquisition system was used to measure the radiation spectrum of the gas-solid interface of the heat-resistant material. The tracer components were determined by analyzing the radiation spectrum information. Radiation images were captured using filters and a high-speed camera to achieve the location and real-time identification of the chemical reaction zone at the high-temperature gas-solid interface.

Benefits of technology

It achieves precise positioning of high-temperature interfaces and characterization of overall spatial distribution features, providing a clear reference for experimental measurement of gas-solid coupling effects, verifying numerical simulation results, and supporting the development of aircraft thermal protection technology.

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Abstract

The application provides a high-temperature gas-solid interface chemical reaction zone positioning and distinguishing method, which comprises the following steps: first, using a radiation spectrum acquisition system to measure the radiation spectrum of a gas-solid interface of a heatproof material, and obtaining the radiation spectrum information of the chemical reaction zone of the gas-solid interface of the heatproof material; then, according to the measured radiation spectrum information, analyzing the chemical composition and corresponding wavelength of the chemical reaction zone on the surface of the heatproof material, so as to determine the tracer component for chemical reaction zone positioning; then, selecting the tracer component filter of the corresponding wavelength according to the analysis result of the radiation spectrum information, and shooting the radiation image of the chemical reaction zone of the heatproof material by using a high-speed camera provided with the tracer component filter; finally, realizing the positioning and real-time distinguishing of the interface chemical reaction zone between the high-enthalpy flow and the material surface according to the shot radiation image. The application can realize the positioning and real-time distinguishing of the interface chemical reaction zone between the high-enthalpy flow and the material surface, and solves the problem that the positioning of the interface chemical reaction zone between the high-enthalpy flow and the material surface is not clear at present.
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