CFD study of non-premixed swirling burners: Effect of turbulence models  

作　　者：Erfan Khodabandeh Hesam Moghadasi Mohsen Saffari Pour Mikael Ersson Par G.Jonsson Marc A.Rosen Alireza Rahbari 

机构地区：[1]Department of Mechanical Engineering,Amirkabir University of Technology,Tehran,Iran [2]School of Mechanical Engineering,Department of Energy Conversion,Iran University of Sciesnce and Technology(IUST),Narmak 16846-13114,Tehran,Iran [3]Department of Mechanical Engineering,Shahid Bahonar University of Kerman,Kerman,Iran [4]Division of Processes,Department of Materials Science and Engineering,KTH Royal Institute of Technology,Brinellvägen 23,SE-10044 Stockholm,Sweden [5]Faculty of Engineering and Applied Science,University of Ontario Institute of Technology,Oshawa,Ontario,L1H 7K4,Canada [6]Department of Mechanical Engineering,Shahid Rajaee Teacher Training University(SRTTU),Tehran,Iran [7]Research School of Engineering,The Australian National University,Canberra,ACT 2601,Australia

出　　处：《Chinese Journal of Chemical Engineering》2020年第4期1029-1038,共10页中国化学工程学报（英文版）

基　　金：the provided funding resources by Mohsen Saffari Pour from the National Elites Foundation of Iran;Stiftelsen Axel Hultgerns of Sweden for supporting this research。

摘　　要：This research investigates a numerical simulation of swirling turbulent non-premixed combustion.The effects on the combustion characteristics are examined with three turbulence models:namely as the Reynolds stress model,spectral turbulence analysis and Re-Normalization Group.In addition,the P-1 and discrete ordinate(DO)models are used to simulate the radiative heat transfer in this model.The governing equations associated with the required boundary conditions are solved using the numerical model.The accuracy of this model is validated with the published experimental data and the comparison elucidates that there is a reasonable agreement between the obtained values from this model and the corresponding experimental quantities.Among different models proposed in this research,the Reynolds stress model with the Probability Density Function(PDF)approach is more accurate(nearly up to 50%)than other turbulent models for a swirling flow field.Regarding the effect of radiative heat transfer model,it is observed that the discrete ordinate model is more precise than the P-1 model in anticipating the experimental behavior.This model is able to simulate the subcritical nature of the isothermal flow as well as the size and shape of the internal recirculation induced by the swirl due to combustion.

关 键 词：Computational Fluid Dynamics(CFD) Turbulent combustion Non-premixed flames Large eddy simulations Radiative heat transfer model Modeling validation 

分 类 号：O357.5[理学—流体力学] TQ038[理学—力学]