Reconstruction of Temperature Field in 3-D, Absorbing, Emitting, and Anisotropically Scattering Medium  

作　　者：赵敬德 刘妮 钟珂 

机构地区：[1]College of Environmental Science and Engineering, Donghua University [2]College of Power Engineering, University of Shanghai for Science and Technology

出　　处：《Journal of Donghua University(English Edition)》2006年第2期17-21,共5页东华大学学报（英文版）

基　　金：Project Supported by National Nature Science Foundation of China (50578034) ;Science and Technology Development Foundation ofDonghua University

摘　　要：The soft measurement technology of flame temperature field is an efficient method to learn the combustion status in furnace. Generally, it reconstructs the temperature field in furnace through the image of flame, which is a process to solve radiative inverse problem. In this paper, the flame of pulverized coal is considered as 3-D, absorbing, emitting, and anisotropically scattering non-gray medium. Through the study on inverse problem of radiative heat transfer, the temperature field in this kind of medium has been reconstructed. The mechanism of 3-D radiative heat transfer in a rectangular media, which is 2 m×3 m× 5 m and full of CO2, N2 and carbon particles, is studied with Monte Carlo method. The 3-D temperature field in this rectangular space is reconstructed and the influence of particles density profile is discussed.The soft measurement technology of flame temperature field is an efficient method to learn the combustion status in furnace. Generally, it reconstructs the temperature field in furnace through the image of flame, which is a process to solve radiative inverse problem. In this paper, the flame of pulverized coal is considered as 3-D, absorbing, emitting, and anisotropically scattering non-gray medium. Through the study on inverse problem of radiative heat transfer, the temperature field in this kind of medium has been reconstructed. The mechanism of 3-D radiative heat transfer in a rectangular media, which is 2 m × 3 m× 5 m and full of CO2, N2 and carbon particles, is studied with Monte Carlo method. The 3-D temperature field in this rectangular space is reconstructed and the influence of particles density profile is discussed.

关 键 词：reconstruction of 3-D temperature field anisotropically scattering non-gray medium Monte Carlo method density profile inverse problem of radiative heat transfer. 

分 类 号：X1[环境科学与工程—环境科学]