粒子分离器叶片涂层冲蚀磨损的数值模拟
Numerical simulation of erosion and abrasion of separator blade coating
-
摘要: 以叶片涂层为对象,研究其冲蚀过程中损伤的演化过程.首先进行了流场计算.其次通过对单个固体颗粒冲蚀过程的模拟,提出了"碰撞有效影响区域"的概念,使得多个固体颗粒连续冲蚀数值模拟得以实现.接下来通过模拟"碰撞有效影响区域"内材料受到固体颗粒连续冲蚀的过程获得材料的抗冲蚀磨损性能.最后,将流场数据和涂层抗冲蚀磨损性能参数相结合来模拟叶片涂层的冲蚀过程,指出了涂层的薄弱区域并进行了寿命预测.Abstract: The damage evolution of blade coating in the erosion process was studied.Firstly,the flow field was measured;secondly,the erosion process of single solid particles was simulated to propose the concept "Effective erosion region",allowing to simulate numerically the erosion process of multiple solid particles.Next,the erosion resistance performance of coating materials in the "Effective erosion region" was simulated.The results show the weak coating region and provide life prediction by simulating the erosion process of blade coating with the flow field data and erosion resistance performance parameters.
-
Key words:
- aerospace propulsion system /
- separator /
- erosion /
- abrasion /
- blade /
- coating /
- smoothed particle hydrodyncrmics(SPH) method /
- life prediction
-
[1] 孙家枢.金属的磨损[M].北京:冶金工业出版社,1992. [2] 鲁家华,凌志光.燃气透平叶片冲蚀的数值模拟与试验研究的发展[J].能源技术,2001,22(2):47-52.LU Jiahua,LING Zhiguang.The development of numerical simulation and experimental research in blade erosion of gas turbin[J].Energy Technology,2001,22(2):47-52. [3] Woytowitza P J,Tichman R H.Modeling of damage from multiple impacts by spherical particles[J].Wear,1999,223-235:120-133. [4] 闫晓军,张玉珠,聂景旭.空间碎片超高速碰撞数值模拟的SPH方法[J].北京航空航天大学学报,2005,31(3):351-354.YAN Xiaojun,ZHANG Yuzhu,NIE Jingxu.Numerical simulation of space debris hypervelocity impact using SPH method[J].Journal of Beijing University of Aeronautics and Astronautics,2005,31(3):351-354. [5] 邓瑛,闫晓军.固体颗粒冲蚀下叶片涂层损伤的SPH方法模拟[C]∥中国航空学会动力分会发动机结构强度与振动专业委员会第十二届学术会议文集.成都:中国航空学会动力专业分会,2004:148-152. [6] 何奖爱,王玉玮.材料磨损与耐磨材料[M].沈阳:东北大学出版社,2001. -
点击查看大图
计量
- 文章访问数: 1214
- HTML浏览量: 5
- PDF量: 433
- 被引次数: 0
下载: