论文部分内容阅读
为了研究旋流杯文氏管和套筒结构的变化对燃烧室点火特性的影响,对两种结构不同的方案(方案A和B)进行了燃烧室点火性能试验,并对这两种方案燃烧室头部进行了气流速度场的粒子图像测速仪(PIV)测量及喷雾分布和粒径的测量。试验结果表明:旋流杯文氏管和套筒结构的变化对燃烧室的头部流场、喷雾分布和粒径有很大影响,导致了两种方案燃烧室点火性能差异很大,方案A的燃烧室头部中心回流区、旋转射流扩张角和旋流杯出口喷雾锥角比方案B小,而喷雾粒径大于方案B,方案B的点火性能比方案A有明显改善。
In order to study the influence of the change of the structure of the vortex tube and the sleeve of the swirl cup on the ignition characteristics of the combustion chamber, two different structures (programs A and B) were tested for the ignition performance of the combustion chamber, and the two schemes were burned The head of the chamber was subjected to Particle Image Velocimetry (PIV) measurements of gas flow velocity field and spray distribution and particle size measurements. The experimental results show that the changes of vortex tube and sleeve structure have a great influence on the head flow field, spray distribution and particle size of the combustion chamber, resulting in very different ignition performance of the two schemes combustion chamber. Of the combustion chamber head center recirculation zone, swirl jet expansion angle and swirl cup outlet spray cone angle smaller than the program B, while the spray particle size is greater than the solution B, the firing performance of the solution B than the program A has significantly improved.