Reduced Methane Combustion Mechanism and Verification,Validation,and Accreditation(VV&A)in CFD for NO Emission Prediction  

作　　者：SUN Jihao ZHANG Zhihao LIU Xiao ZHENG Hongtao 

机构地区：[1]College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Journal of Thermal Science》2021年第2期610-623,共14页热科学学报（英文版）

基　　金：This work was supported by National Science and Technology Major Project(2017-Ⅲ-0006-0031);Fundamental Research Funds for the Central Universities(3072019CFJ0307)。

摘　　要：In order to obtain a reduced methane combustion mechanism for predicting combustion field and pollutants accurately in CFD simulations with a lower computational cost,a reduced mechanism with 22 species and 65 steps of reactions from GRI-Mech 3.0 was obtained by direct relation graph method and sensitivity analysis.The ideal reactor calculation and VV&A(Verification,Validation,and Accreditation)in CFD were carried out using the proposed mechanism.The results showed that the proposed mechanism agrees well with the detailed mechanism in a wide range of operating conditions;the temperature field and species can be predicted accurately in CFD simulations(RANS and LES models),and the NO prediction error of an industrial gas turbine combustor outlet is less than 2×10-6.The proposed mechanism has high engineering values.

关 键 词：mechanism reduction pollutant emissions direct relation graph method sensitivity analysis numerical simulation 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]