CAJ | 학술논문

针对改造的某型号轴流压缩机焊接结构，为了更好地确定该结构进气端蜗壳的流体性能，采取专业计算流体力学（CFD）软件FLUENT对进气端蜗壳进行了流场计算，通过添加十字型挡板和圆滑导流板等结构对蜗壳结构进行了改进，设计了三种改良方案，并分析了各自方案的蜗壳内部流体参数，如速度与总压等物理量的分布规律。结果表明，在蜗壳喉部区域添加圆滑导流板，同时在进口区域设置十字型挡板的改进方案具有较好的流场特性，在总压损失、出口面流场均匀性方面都较原结构有了明显的改进，取得了较好的效果。
침대개조적모형호축류압축궤한접결구，위료경호지학정해결구진기단와각적류체성능，채취전업계산류체역학（CFD）연건FLUENT대진기단와각진행료류장계산，통과첨가십자형당판화원활도류판등결구대와각결구진행료개진，설계료삼충개량방안，병분석료각자방안적와각내부류체삼수，여속도여총압등물리량적분포규률。결과표명，재와각후부구역첨가원활도류판，동시재진구구역설치십자형당판적개진방안구유교호적류장특성，재총압손실、출구면류장균균성방면도교원결구유료명현적개진，취득료교호적효과。
In this paper, the professional CFD software, FLUENT, is used to analyze a large welded axial compressor, aiming at optimizing the fluid field of the inlet volute. With reasonable simplification, some meaningful parameters such as velocity distribution, total pressure are obtained. With adding cross-shaped damper and smoothing baffle, three modified models for the inlet volute are built and examined to optimize the fluid field of the inlet volute. The result shows that adding a cross baffle and a smooth diversion plate enable the inlet volutes having a better flow field. The modified inlet shows a better performance in terms of total pressure loss and the uniformity of the exit face.