金属颗粒及金属基高能燃料辐射测温研究进展OA

The research progress in radiation thermometry for measuring the combustion temperature of metal particles and metal-based high-energy fuels was summarized.In response to measuring challenges such as transience,non-uniformity,and non-gray radiation characteristics during metal particles combustion,the principles,technical features,and application status of several methods,including dual-wavelength and triple-wavelength pyrometry based on photoelectric detectors,dual-wave-length imaging thermometry based on imaging technology,and multi-wavelength pyrometry based on photoelectric detectors,werre analyzed.The analysis indicates that the dual-wavelength and triple-wavelength methods based on photoelectric detec-tors offer high time resolution and are suitable for studying the transient combustion processes of single particles.The dual-wavelength temperature measurement method based on imaging thermometry enables visualization of two-dimensional tempera-ture fields,which is applicable for the study of flame structure and propagation.The multi-wavelength pyrometry based on pho-toelectric detectors processes broad-spectrum information and overcomes the limitations of non-gray radiation,making it a ref-erence method for high-precision temperature measurement.The advantages and limitations of each method are summarized,and future development directions are pointed out to improve the accuracy and applicability of temperature measurement in complex combustion environments.Attached with 85 references.