CAJ | 학술논문

基于被测区域内混合气体的声速和光谱积分吸收系数，提出声光融合同时重建温度场和浓度场的方法。以CO2－水蒸气－N2－O2混合气体为例，建立声波传播速度和光谱积分吸收系数模型，结合CT理论和所提出的融合方法，实现了燃烧区域内温度场和水蒸气浓度场的重建。仿真结果表明：该方法能够准确地重建被测区域的温度和浓度分布，且温度场重建结果较浓度场更精确；但测量噪声对温度场重建结果的影响较浓度场更大。
기우피측구역내혼합기체적성속화광보적분흡수계수，제출성광융합동시중건온도장화농도장적방법。이CO2－수증기－N2－O2혼합기체위례，건립성파전파속도화광보적분흡수계수모형，결합CT이론화소제출적융합방법，실현료연소구역내온도장화수증기농도장적중건。방진결과표명：해방법능구준학지중건피측구역적온도화농도분포，차온도장중건결과교농도장경정학；단측량조성대온도장중건결과적영향교농도장경대。
Basing on acoustic velocity and spectrum integral absorption coefficient in a mixed gas within moni-tored areas, making use of acoustic-optic fusion method to reconstruct both temperature and concentration fields was proposed.Taking a CO2-water vapour-N2-O2 gas mixture as an example, the model for acoustic propagation velocity and spectrum integral absorption coefficient was established, including having CT theory and the proposed fusion method considered to reconstruct temperature field and water vapour concentration field.Simulation results show that this method can accurately reconstruct the distribution of both temperature and concentration of the monitored areas and the temperature field reconstructed outperforms the concentration field in accuracy as well as the measurement noise affects the temperature field reconstruction greater than does the concentration field.