变循环发动机地面起动建模及控制规律设计方法

郝旺; 王占学; 张晓博; 周莉; 王靖凯

doi:10.13224/j.cnki.jasp.20210132

变循环发动机地面起动建模及控制规律设计方法

doi: 10.13224/j.cnki.jasp.20210132

1.
西北工业大学动力与能源学院陕西省航空发动机内流动力学重点实验室，西安 710129
2.
中国航空发动机集团有限公司沈阳发动机研究所，沈阳 110015

基金项目: 国家自然科学基金（51876176，51906214，52076180）；两机重大专项基础研究项目（J2019-Ⅰ-0021-0020）

详细信息

作者简介:
郝旺（1994-），男，博士生，主要从事航空发动机总体性能仿真与设计。

中图分类号: V231.1
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- 文章访问数: 126
- HTML浏览量: 24
- PDF量: 111
- 被引次数: 0
出版历程
- 收稿日期: 2021-04-02
- 刊出日期: 2022-01-28

Ground starting modeling and control law design method of variable cycle engine

1.
Shaanxi Key Laboratory of Internal Aerodynamics in Aero-Engine， School of Power and Energy，Northwestern Polytechnical University，Xi'an 710129，China
2.
Shenyang Engine Research Institute， Aero Engine Corporation of China，Shenyang 110015，China

摘要

摘要: 针对旋转部件等熵效率不连续的问题，提出使用换算扭矩代替等熵效率的方法，给出了旋转部件低转速特性拓展方法并获取了旋转部件的全转速特性。提出了可考虑点火及燃烧稳定性的燃烧室稳定性模型，最终建立了变循环发动机部件级整机起动模型。考虑了变循环发动机的8个可调参数，采用差分进化算法对变循环发动机在双外涵及单外涵模态下的起动过程进行了优化。结果表明：变循环发动机在双外涵及单外涵模态下的起动时间分别为17.2 s与12.8 s；双外涵模态下，需要调节燃油流量、喷管喉部面积与后可变面积涵道引射器外涵面积；单外涵模态下，需要调节燃油流量、喷管喉部面积与低压涡轮进口导叶面积；迎风来流马赫数为0.04时，变循环发动机在双外涵与单外涵模态时的起动时间比静止状态均减少0.2 s。
- 变循环发动机 /
- 部件级起动模型 /
- 部件特性 /
- 控制规律设计 /
- 差分进化算法
Abstract: To solve the problem of discontinuous isentropic efficiency of rotating components，a method of using correct torque instead of isentropic efficiency was proposed.The extrapolation method of low speed characteristics of rotating components was given，and the full speed characteristics of rotating components were obtained.A burner stability model considering ignition and burn stability was proposed.Finally，a component-level starting model of the variable cycle engine was established.Considering the eight variable parameters of the variable cycle engine，the differential evolution algorithm was used to optimize the starting process of the variable cycle engine in the double bypass and single bypass modes.The results showed that the starting time of the variable cycle engine in the double bypass and single bypass modes was 17.2 s and 12.8 s，respectively.In the double bypass mode，the fuel flow，nozzle throat area and outer bypass area of rear variable area bypass injector need to be adjusted.In the single bypass mode，the fuel flow，nozzle throat area and low pressure turbine inlet guide vane area need to be adjusted.When the free stream Mach number was equal to 0.04，the starting time of the variable cycle engine in the double bypass and single bypass modes was 0.2 s less than the static state.
- variable cycle engine /
- component-level starting model /
- component characteristics /
- control law design /
- differential evolution algorithm

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