旋流器结构参数对TAPS燃烧室性能的影响

Influence of Swirler Structure Parameters on Performance of TAPS Combustor

利用数值模拟手段探究旋流器叶片角度对双环预混旋流(TAPS)燃烧室性能的影响。针对本文研究的特定结构及工况,结论如下:一级、二级叶片角增大时,参考线上切向速度仅在特定位置变化较明显,燃烧效率与压力损失均呈上升趋势。三级叶片角增加,火焰筒中心区域气流切向速度变化较大,回流区体积明显增大,燃烧效率与压力损失也逐渐升高。预测所得压力损失y与燃烧效率z随三级叶片角x的变化关系式分别为:y=0.06317×x+3.31396和z=0.02611×x+97.82139。结果可为燃气轮机TAPS燃烧室的旋流器设计提供参考。

The numerical simulation method was used to investigate the effect of the swirler vanes angle on performance of twin annular premixed swirl combustor.For the specific structure and working conditions of this study,the conclusions are as follows:as the first and second vane angles increase,the tangential velocity on the reference line changes significantly at a specific position only,and the combustion efficiency and pressure loss increase.The third vane angle increases,the tangential velocity of the airflow in the center of the flame tube changes greatly,and the volume of the recirculation zone is significantly increased.The combustion efficiency and pressure loss increase too.The relationship between the predicted pressure loss y and the combustion efficiency z as a function of the third vane angle x are:y=0.06317×x+3.31396 and z=0.02611×x+97.82139.The results can provide a reference for the design of swirler in gas turbine TAPS combustor.