A-19 タービン前縁冷却孔周りにおける粒子付着現象の数値シミュレーション(空力・冷却,一般講演)

概要

論文の詳細を見る
Particle deposition is a phenomenon that particles melting in a combustor adhere on a turbine blade/vane surface and end walls. However, the deposition mechanism has not been clarified yet. In the present study, a deposition model that depends on wall surface temperature and particle impinge velocity is developed, and it is applied to the deposition on a test piece mimicking the leading edge of a turbine vane. The test piece has cooling holes like shower-head ones. The flow field is assumed to be three-dimensional, compressible and turbulent, and it is solved in a RANS manner. The particle trajectories are simulated with a Lagrangian approach. Visualizing the results, the characteristics of particle deposition around the cooling holes are investigated.
公益社団法人日本ガスタービン学会の論文
2010-10-20