CAJ | 학술논문

以某单头部矩形燃烧室为研究对象，采用多种湍流模型和燃烧模型进行组合计算，模拟燃烧室内部的速度场和温度场，并对计算结果进行对比分析。结果表明：湍流模型主要影响火焰筒内部主燃孔横截面上游的速度分布， Standard k-ε和Realizable k-ε模型的速度场计算结果差异相对较小；湍流动能预测受湍流模型的影响较大，并具有一定规律性；不同组合模型对燃烧室内部和出口温度分布的局部细节模拟差异较大，燃烧模型影响最大；PDF模型计算的温度值较合理，另外三种燃烧模型在单步完全反应燃烧机理下的计算值偏高，计算获得的OTDF也相差较大。
이모단두부구형연소실위연구대상，채용다충단류모형화연소모형진행조합계산，모의연소실내부적속도장화온도장，병대계산결과진행대비분석。결과표명：단류모형주요영향화염통내부주연공횡절면상유적속도분포， Standard k-ε화Realizable k-ε모형적속도장계산결과차이상대교소；단류동능예측수단류모형적영향교대，병구유일정규률성；불동조합모형대연소실내부화출구온도분포적국부세절모의차이교대，연소모형영향최대；PDF모형계산적온도치교합리，령외삼충연소모형재단보완전반응연소궤리하적계산치편고，계산획득적OTDF야상차교대。
The inner velocity and temperature fields of a single-dome rectangular combustor were simulat-ed with various turbulence models and combustion models. Through comparison and analysis, it is found that the turbulence models are the main influential factor on the velocity distribution before the cross sec-tion of primary hole, the difference of velocity field results between the Standard k- ε model and the Realiz-able k-ε model is slight. The turbulence models mainly affect the turbulence kinetic energy and turbu-lence intensity, and the simulation results have a stated regularity. There is a big difference in the details of combustor inner and exit temperature distribution applying different combined models, the combustion mod-els play an important role in the result difference. The temperature value is simulated reasonably using PDF model, but the results got from the other three combustion models which used the global reaction mecha-nism are on the high side, the OTDF calculated from the results also have many differences.