双重正则化约束下主被动结合方法重建火焰物理场Reconstruction of flame physical fields via active and passive combined method under double regularization constraints
朱宁静,王哲,杜雷恒,余亮英,黄志锋
摘要(Abstract):
利用火焰自发辐射(被动法)与吸收光谱(主动法)信号重建燃烧物理场是常用的2种光学测量方法,结合2种方法各自优势发展主被动结合方法将为燃烧检测提供新手段。通过在被动法测量系统中引入1条激光吸收光路同时获得火焰自发辐射和吸收光谱信号,将被动法重建的燃烧温度场和组分初始浓度场引入主动法重建中,结合平滑性与先验浓度物理场双重正则化约束发展主被动结合方法。针对典型单峰与双峰轴对称火焰截面开展模拟重建,当测量误差为1.00%时,单峰与双峰火焰燃烧温度场重建平均误差分别为0.92%和1.32%,水蒸气体积分数平均误差分别3.05%和3.31%。结果表明,双重正则化约束下主被动结合方法水蒸气体积分数重建精度相较于被动法明显提升,相比于主动法所需布置激光光路数大幅减少,实现了利用简单测量系统的燃烧温度场和组分浓度场准确测量。
关键词(KeyWords): 燃烧检测;主被动结合方法;火焰物理场重建;双重正则化约束
基金项目(Foundation): 国家自然科学基金项目(52476086)~~
作者(Author): 朱宁静,王哲,杜雷恒,余亮英,黄志锋
DOI: 10.19666/j.rlfd.202504065
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