Numerical investigation of particle deposition on converging slot-hole film-cooled wall  

作　　者：ZHOU Jun-hui ZHANG Jing-zhou 周君辉;张靖周

机构地区：[1]College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016, China [2]Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing 210016, China

出　　处：《Journal of Central South University》2017年第12期2819-2828,共10页中南大学学报（英文版）

基　　金：Project(51276090) supported by the National Natural Science Foundation of China;Project(CXLX13_166) supported by Funding of Jiangsu Innovation Program for Graduate Education;Project supported by the Fundamental Research Funds for the Central Universities,China

摘　　要：Numerical research on the dilute particles movement and deposition characteristics in the vicinity of converging slot-hole(console) was carried out, and the effect of hole shape on the particle deposition characteristics was investigated. The EI-Batsh deposition model was used to predict the particle deposition characteristics. The results show that the console hole has an obvious advantage in reducing particle deposition in comparison with cylindrical hole, especially under higher blowing ratio. The coolant jet from console holes can cover the wall well. Furthermore, the rotation direction of vortices near console hole is contrary to that near cylindrical hole. For console holes, particle deposition mainly takes place in the upstream area of the holes.Numerical research on the dilute particles movement and deposition characteristics in the vicinity of converging slot-hole(console) was carried out, and the effect of hole shape on the particle deposition characteristics was investigated. The EI-Batsh deposition model was used to predict the particle deposition characteristics. The results show that the console hole has an obvious advantage in reducing particle deposition in comparison with cylindrical hole, especially under higher blowing ratio. The coolant jet from console holes can cover the wall well. Furthermore, the rotation direction of vortices near console hole is contrary to that near cylindrical hole. For console holes, particle deposition mainly takes place in the upstream area of the holes.

关 键 词：gas–solid flow particle deposition film-cooled WALL converging SLOT FILM COOLING HOLE numerical simulation 

分 类 号：O484[理学—固体物理]