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《中国化学工程学报(英文版)》 2008-05
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Validation of the RANS-SOM Combustion Model Using Direct Numerical Simulation of Incompressible Turbulent Reacting Flows

WANG Fang1 ,XU Chunxiao 2 and ZHOU Lixing2, 1Department of Thermal Engineering,Beihang University,Beijing 100083,China 2Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China  
The second-order moment combustion model,proposed by the authors is validated using the direct numerical simulation(DNS)of incompressible turbulent reacting channel flows.The instantaneous DNS results show the near-wall strip structures of concentration and temperature fluctuations.The DNS statistical results give the budget of the terms in the correlation equations,showing that the production and dissipation terms are most important.The DNS statistical data are used to validate the closure model in RANS second-order moment(SOM) combustion model.It is found that the simulated diffusion and production terms are in agreement with the DNS data in most flow regions,except in the near-wall region,where the near-wall modification should be made,and the closure model for the dissipation term needs further improvement.The algebraic second-order moment(ASOM) combustion model is well validated by DNS.
【Fund】: the National Natural Science Foundation of China(50606026 50736006).
【CateGory Index】: O643.2
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【References】
Chinese Journal Full-text Database 1 Hits
1 BAI Yun;LUO Kun;YANG Jian-Shan;QIU Kun-Zan;FAN Jian-Ren;State Key Laboratory of Clean Energy Utilization,Zhejiang University;;A-Priori Validation of a Second-Order Moment Combustion Model[J];工程热物理学报;2015-12
【Co-references】
Chinese Journal Full-text Database 2 Hits
1 WANG Fang1 ,XU Chunxiao 2 and ZHOU Lixing2, 1Department of Thermal Engineering,Beihang University,Beijing 100083,China 2Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China;Validation of the RANS-SOM Combustion Model Using Direct Numerical Simulation of Incompressible Turbulent Reacting Flows[J];Chinese Journal of Chemical Engineering;2008-05
2 QIAO Li, ZHOU Li xing, CHEN Xing long, ZHANG Jian (State Key Laboratory of Clean Coal Combustion,Department of Engineering Mechanics, Tsinghua University,Beijing 100084,China);A Unified Second-Order Moment Model for Turbulent Combustion[J];燃烧科学与技术;2002-04
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