摘要
工业燃烧环境的复杂性,使得传统的灰气体加权和(WSGG)模型很难满足气体辐射特性计算的精度要求。基于HITEMP2010数据库,利用等级相关原理将k分布法引入WSGG模型,并假设各参与性气体之间是统计非关联的,采用叠加法建立了适用于任意浓度、温度分布的混合气体WSGG模型。对四种不同燃烧条件下的非等温、非均匀混合气体的辐射换热进行了计算,将新模型计算的辐射热流和辐射源项与逐线法(LBL)及其他模型计算结果进行比较来验证新模型的有效性。结果显示新模型参数能很好地预测任意工况下混合气体的辐射特性。
The complexity of the industrial combustion environment makes it difficult for the traditional weighted-sum-of-gray-gases(WSGG)model to meet the accuracy requirements of gas radiation characteristics calculations.Based on HITEMP2010 database,the k-distribution method is introduced into WSGG model based on the rank correlated theory.Assuming that the participating gases are statistically uncorrelated,a WSGG model for gas mixture with arbitrary concentration and temperature distribution is established by superposition method.The radiation heat transfer of non-isothermal and non-homogeneous gas mixtures under four different combustion conditions is calculated.The effectiveness of the new model is verified by comparing the radiative heat flux and radiative source term calculated by the new model with line-by-line(LBL)and other models.The results show that the new model parameters can well predict the radiation characteristics of gas mixture under any conditions.
作者
尹雪梅
王磊
刘永涛
吴超
YIN Xuemei;WANG Lei;LIU Yongtao;WU Chao(College of Energy and Power Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2021年第6期3296-3305,共10页
CIESC Journal
基金
国家自然科学基金项目(51706209)
河南省科技攻关项目(202102210071)
河南省高等学校重点科研项目计划支持(20A460028)。
关键词
灰气体加权和模型
气体
辐射
K分布
传热
weighed-sum-of-gray-gases model
gas
radiation
k-distribution
heat transfer
