叶孔式预旋喷嘴气动设计及验证策略
Aerodynamic design and validation strategy on hole-shaped pre-swirl nozzles
王士骥 1常骐越 1董明 1范宜龙 1吴丽军1
作者信息
- 1. 中国航发商用航空发动机有限责任公司,上海 200241
- 折叠
摘要
基于"功能分析—设计定义—试验验证"的产品开发思路,介绍了叶孔式预旋喷嘴气动设计及验证方面的工作.采用视角分析方法完成了预旋喷嘴功能分析,确定了预旋喷嘴的系统边界、利益攸关者及功能.完成了预旋喷嘴气动设计需求分析,确认了设计需求的完整性和合理性.在设计定义环节,对比了3种常见预旋喷嘴形式,分析了各自的优缺点,确立了采用叶孔式预旋喷嘴的构型.基于二阶贝塞尔曲线,完成了叶孔式预旋喷嘴的气动流道参数化造型.通过预旋喷嘴气动性能相关特征设计失效模式及影响分析(DFMEA),识别出预旋喷嘴气动性能相关的关键特性.建立了零组件—部件—核心机/整机的预旋喷嘴流量验证体系.
Abstract
Based on the product development process of"function analysis,design definition,and validation",the aerodynamic design and validation of hole-shaped pre-swirl nozzles are introduced.Function analysis of the pre-swirl nozzle is completed by view point analysis,with the system boundaries,stakeholders,and functions defined.Requirement analysis of the pre-swirl nozzle aerodynamic design is carried out to confirm the integrity and rationality of design requirements.In the process of design definition,three different types of pre-swirl nozzles are compared,whose advantages and disadvantages are analyzed to determine the final configuration of the pre-swirl nozzle.An aerodynamic profile of the hole-shaped pre-swirl nozzle is generated based on the second-ordered Bézier curve.By design failure mode and effect analysis(DFMEA),key characteristics related to aerodynamic performance of the pre-swirl nozzle are identified,and a pre-swirl nozzle validation process that covers the component test,sub-system test,and core engine/engine test is established.
关键词
航空发动机/涡轮/预旋喷嘴/气动设计/验证策略Key words
aero-engine/turbine/pre-swirl nozzle/aerodynamic design/validation strategy引用本文复制引用
出版年
2024
NETL
NSTL
万方数据