CAJ | 학술논문

应用稳态时N—S方程、RNGk-ε湍流模型以及非预混燃烧模型对几种预混喷嘴进行了仿真计算。内部结构分别为无肋片无凹槽式、肋片式、凹槽式及凹槽／肋片组合式。从总压损失和掺混效果2方面进行了比较分析，分析认为：凹槽／肋片组合结构的掺混效果相对较好。研究结果可为快速预混喷嘴试验件设计提供一定参考依据。
응용은태시N—S방정、RNGk-ε단류모형이급비예혼연소모형대궤충예혼분취진행료방진계산。내부결구분별위무륵편무요조식、륵편식、요조식급요조／륵편조합식。종총압손실화참혼효과2방면진행료비교분석，분석인위：요조／륵편조합결구적참혼효과상대교호。연구결과가위쾌속예혼분취시험건설계제공일정삼고의거。
Several premixed nozzles were simulated numerically using the steady-state time-averaged Navier-Stokes equations, RNG turbulent model and non-premixed combustion model. Based on the structure of inner wall, the pre-mixed nozzles investigated fall into such categories as smooth, ribbed, grooved and rib-grooved. From the comparison and analyze between the total pressure loss and mixing effects, the good mixing effect of combined structure of rib and groove was obtained. The research results provid some reference for the design of rapidly pre-mixed experimental nozzles.