粒子分离器结构优化对吞雨性能改进研究

The Eulerian-Lagrangian multiphase flow particle tracking model was used to numerically simulate the particle separator in a turboshaft engine, and the theory of orthogonal experimental design was employed to conduct the experiment and optimize the structure of the particle separator. The effects of the structure parameter of the particle separator on the separation effect and rain-swallowing performance were examined. The results disclosed that, compared with the original model, in dry conditions, the scavenging ratio of the optimized model decreased by 4. 3%, and the total pressure loss coefficient decreased by 0. 03%; in rain-swallowing conditions, the former decreased by 0. 97%, the latter decreased by 0. 039%, and the separation efficiency increased by 5. 5%. Therefore, this optimization design basically satisfies the requirements of low total pressure loss and high separation efficiency. In addition, the rain-swallowing performance of the particle separator is improved to a great degree.