摘要
采用标量联合PDF(probability density function)方法结合修正的k-ε湍流模型、EMST小尺度混合模型以及GRI3.0化学反应机理对甲烷-氢气混合燃料(体积比为1∶1)高温伴流射流J HC(jet in hot coflow)火焰进行数值模拟.比较分析了高温伴流中氧气质量分数分别为3%,6%和9%时的3种不同的MILD(moderate andintense lowoxygen dilution)燃烧火焰,3种火焰的计算结果与实验值符合得较好.
Numerical simulation of turbulent CH4/H2 （1/1 by volume） flames issuing from a jet in hot coflow（JHC） was presented with the scalar joint probability density function （PDF） method, the modified standard k-ε turbulence model and EMST small scale mixing model. A comparison between the modeling and experimental data was made for three different MILD （moderate and intense low oxygen dilution） flames with oxygen mass fractions of 3%, 6% and 9% respectively in the hot coflow. The prediction results were in close agreement with experimental data.
基金
国家自然科学基金(50776085)资助
