Simulation of MILD combustion using Perfectly Stirred Reactor model

Journal article (2017)

Authors

Zhuoyao Chen University of Cambridge
V. M. Reddy King Abdullah University of Science and Technology, Clean Combustion Research Center
Shaohong Ruan University of Cambridge
Nguyen Anh Khoa Doan University of Cambridge
W. L. Roberts King Abdullah University of Science and Technology
Nedunchezhian Swaminathan University of Cambridge
Affiliation
External organisation
Flameless combustion Correlated joint PDF Jet in Hot Coflow (JHC) Moderate or intense low-oxygen dilution (MILD) Perfectly Stirred Reactor (PSR)
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Published Date

2017

Language

English

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Abstract

A simple model based on a Perfectly Stirred Reactor (PSR) was proposed for moderate or intense low-oxygen dilution (MILD) combustion. The PSR calculation covers the entire flammability range and the tabulated chemistry approach was applied with a presumed joint probability density function (PDF). The jet in hot and diluted coflow experimental set-up under MILD conditions was simulated using PSR model for two oxygen dilution levels. The unheated fuel jet consists of 50% CH4 and 50% H2. The computed results for mean temperature major and minor species mass fractions were compared with the experimental data and simulation results through a multi-environment transported PDF approach. A good agreement was observed at three different axial locations for these comparisons despite peak value overprediction of CO formation suggesting that MILD combustion can be effectively modeled by the proposed PSR model with lower computational cost.