高速液滴撞击下叶片表面微结构防水蚀性能研究

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高速液滴撞击下叶片表面微结构防水蚀性能研究

更新时间：2025-07-09

- 高速液滴撞击下叶片表面微结构防水蚀性能研究
- Issue 5, Pages: 68-77(2023)
- 作者机构：
  
  1. 西安交通大学热流科学与工程教育部重点实验室
  2. 西安交通大学能源与动力工程学院
  3. 中国船舶集团有限公司第七〇四研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK261
- Published：2023
- 稿件说明：
移动端阅览
[J]. 2023, (5): 68-77.
DOI：

[J]. 2023, (5): 68-77. DOI：

摘要

为了有效解决汽轮机叶片的水蚀问题，提高汽轮机运行的安全稳定性，基于水蚀频发位置的结构特点和水蚀特征，提出一种叶片表面微结构的防水蚀方法。这类方法中所包含的叶片表面微结构能在不影响叶型性能的前提下达到较好的防水蚀作用。基于防水蚀机理、结构经济性等多方面考量，设计了沟槽、条纹、球窝、球凸和锯齿共5种表面微结构，并采用两种叶片材料制成标准件及5种带结构试件，在团队自主设计的水蚀测试系统内进行水蚀性能试验。提出平均体积损失作为评价不同结构试件水蚀特性的参数，并使用无量纲抗水蚀性能参数进行对比排序。研究发现：在叶片材料表面布置锯齿形微结构后，叶片材料表面的抗水蚀性能最好，其抗水蚀性能系数是平面的1.57倍；布置条纹、沟槽、球窝3种结构均能在不同程度上提升表面抗水蚀性能。研究结果可为实际叶片防水蚀提供参考。

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references

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