摘要
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-
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-
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1998年第1期125-128,共4页
Journal of Engineering Thermophysics
基金
国家攀登计划资助
国家自然科学基金
关键词
煤粉燃烧
辐射图像处理
数值模拟
电站锅炉
pulverized-coal combustion, radiant image processing, numerical simulation, 3-D temperature distribution
