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煤粉炉内辐射图象处理和燃烧过程数值模拟相结合初探
引用本文:周怀春,程浩斌,娄新生.煤粉炉内辐射图象处理和燃烧过程数值模拟相结合初探[J].工程热物理学报,1998(1).
作者姓名:周怀春  程浩斌  娄新生
作者单位:华中理工大学煤燃烧国家重点实验室!武汉,430074,华中理工大学煤燃烧国家重点实验室!武汉,430074,华中理工大学煤燃烧国家重点实验室!武汉,430074
基金项目:国家攀登计划资助,国家自然科学基金
摘    要:1引言大型电站锅炉炉膛内的燃烧过程是发生在相对较大空间内的、不断脉动的、具有强烈三维特征的复杂物理和化学过程。因为实际炉膛尺寸太大,以至于还没有建立适用的可视化技术手段1],只能对其缩小了的模型在实验室进行研究2.3]。作者在炉膛煤粉燃烧二维温度分布检测研究4]的基础上,提出了以多幅辐射图像处理为基础的三维温度分布检测方法5]。本文将建立较为严密的辐射图象信息同炉内燃烧过程的关系式,并借助燃烧过程数值模拟技术来估计炉内燃烧介质辐射特性参数非均匀分布,改进以辐射图象处理为基础的炉内三维燃烧温度分布检测方…

关 键 词:煤粉燃烧  辐射图像处理  数值模拟  三维温度分布

INTEGRATION OF RADIANT IMAGE PROCESSING AND NUMERICAL SIMULATION OF COMBUSTION PROCESSES IN PC-FIRED FURNACES
ZHOU Huaichun, CHENG Haobin ,LOU Xinsheng.INTEGRATION OF RADIANT IMAGE PROCESSING AND NUMERICAL SIMULATION OF COMBUSTION PROCESSES IN PC-FIRED FURNACES[J].Journal of Engineering Thermophysics,1998(1).
Authors:ZHOU Huaichun  CHENG Haobin  LOU Xinsheng
Abstract:The scientific meaning and practicality of integration of radiant image processing andnumerical simulation of combustion processes in pulverized-coal-fired furnaces are discussed.Through taking account of radiation emitted from wall surface and the uneven distributionof radiant characteristics of two-phase medium in furnaces, an equation relating 2 - Dmonochromatic radiant images and 3 - D combustion processes in furnaces is improved.Numerical simulation technique will be used to estimate the spacious distribution of theradiative characteristics of the two-phase medium in furnaces, and the measuring methodof 3 - D temperature distribution is improved. Taking the radiant images as a kind of"radiative boundary" for numerical simulation of combustion processes, it will be possible toassess different models of combustion reaction and different calculation methods of radiativeheat transfer. Using two sets of radiant image processing devices with filters of differentcentral wavelengths, different solid and gas temperature distributions could be obtainedsimultaneously. These considerations will be helpful for experimental study and numericalsimulation of combustion processes in pulverized-coal-fired furnaces-
Keywords:pulverized-coal combustion  radiant image processing  numerical simulation  3-D temperature distribution
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