CAJ | 학술논문

利用FLUENT软件研究了喷嘴安装位置L对重整气燃烧室燃烧性能的影响。采用了Realizable k-ε湍流模型、PDF燃烧模型、污染物模型和SIMPLE算法对其进行了数值模拟。结果表明，随着L的增加，燃烧室出口温度场的均匀性先提高后降低。当L由30mm变化到40mm时，火焰筒内壁面处燃气最高温度先增大后减小，但火焰筒内壁面处燃气平均温度变化不大。当L=40mm时，重整气燃烧室出口处的NOX体积分数仅为22×10-6。
이용FLUENT연건연구료분취안장위치L대중정기연소실연소성능적영향。채용료Realizable k-ε단류모형、PDF연소모형、오염물모형화SIMPLE산법대기진행료수치모의。결과표명，수착L적증가，연소실출구온도장적균균성선제고후강저。당L유30mm변화도40mm시，화염통내벽면처연기최고온도선증대후감소，단화염통내벽면처연기평균온도변화불대。당L=40mm시，중정기연소실출구처적NOX체적분수부위22×10-6。
The effects of nozzle installation position L on the combustion performance of reforming gas combustion chamber are researched by using the FLUENT software. It is numerically simulated by adopting the Realizable k-ε turbulence model, PDF (probability density function) combustion model, pollutant model and SIMPLE (semi implicit method for pressure linked equations) algorithm. The results show that the uniformity of combustor outlet temperature field improves first and then decreases with the increase of L. When L changes from 40mm to 30mm, the gas maximum temperature near inner wall of the combustor increases first and then decreases, while the gas average temperature near inner wall of the combustor has a little change. When L=40mm, the NOX volume fraction at combustor outlet is only 22×10-6.