工质/涡轮电驱动分布式推进系统设计参数研究

王笑晨; 贾琳渊; 陈玉春; 王玉茹

doi:10.13224/j.cnki.jasp.20230460

工质/涡轮电驱动分布式推进系统设计参数研究

doi: 10.13224/j.cnki.jasp.20230460

西北工业大学动力与能源学院，西安 710072

基金项目: 国家重大专项基础研究项目（J2019-Ⅰ-0010-0010）

详细信息

作者简介:
王笑晨（1996-），男，博士生，主要从事航空发动机总体设计研究

通讯作者:
贾琳渊（1989-），男，副教授，博士，主要从事航空发动机总体设计研究。E-mail：jialinyuan@nwpu.edu.cn

中图分类号: V231.3
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- 被引次数: 0
出版历程
- 收稿日期: 2023-07-17
- 网络出版日期: 2023-12-22

Design parameter analysis of gas/turbo-electric driven distributed propulsion system

School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China

摘要

摘要:
针对回热式工质驱动分布式推进系统在布局、安装等方面存在的不足，将涡轮电驱动方式与其结合，提出了一种部分涡轮电分布式推进系统。基于部件法建立了设计点计算模型，开展了推进系统的能量流动机理分析，提出了能量传输中关键参数的设计方法。以此为基础，分析了设计参数对推进系统的影响，并对比了分析不同分布式推进系统的性能及设计参数。结果表明：部分涡轮电分布式推进系统耗油率对涡轮前温度的敏感性高于总增压比；相对于工质驱动分布式推进系统，部分涡轮电分布式推进系统存在1.7%的耗油率优势，且当功率占比选取合理时，能够改善原工质驱动分布式推进系统的不足。围绕推进系统耗油率，论证了基于工质驱动的部分涡轮电分布式推进系统在性能上的适用性。
- 分布式推进 /
- 工质驱动 /
- 部分涡轮电 /
- 设计点性能 /
- 参数设计方法
Abstract:
Considering the shortcomings in the design and installation of the reheat gas-driven distributed propulsion system, a partial turbine-electric distributed propulsion system was proposed by combining with the turbine-electric driven method. A design point calculation model was established based on the component model. The energy flow mechanism of the propulsion system was analyzed, and the design method of key energy transfer parameters was proposed. Based on the research, the influence of design parameters on the propulsion system was analyzed, and the performance and design parameters of different distributed propulsion systems were compared and analyzed. The results showed that the fuel consumption of the partial turbo-electric distributed propulsion system was more sensitive to the turbine inlet temperature, and the total pressure ratio had less influence. Compared with the gas-driven distributed propulsion system, the partial turbo-electric distributed propulsion system had a fuel consumption advantage of 1.7%, and when the power ratio was reasonably selected, it could improve the gas-driven distributed propulsion system. Focusing on the fuel consumption of the propulsion system, the performance suitability of the partial turbo-electric distributed propulsion system based on the gas-driven propulsion system was demonstrated.
- distributed propulsion /
- gas-driven /
- partial turbo-electric /
- design point performance /
- parameter design method

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图 1 分布式推进系统的结构

Figure 1. Structure of distributed propulsion system

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图 2 带回热器的燃气涡轮发动机机构

Figure 2. Structure of recuperated turbo-engine

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图 3 工质驱动推进器结构

Figure 3. Structure of gas-driven propulsor

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图 4 电推进器结构

Figure 4. Structure of electric driven propulsor

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图 5 各部件计算流程

Figure 5. Calculation process for each module

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图 6 推进系统热力循环

Figure 6. Thermo cycle of propulsion system

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图 7 π_cl对引气传输过程的影响

Figure 7. Influence of π_cl on transmission process of bleed air

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图 8 最优π_cl与C_w、P_s,5的关系

Figure 8. Optimal π_cl with respect to C_w，P_s,5

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图 9 η_prog与π_fg的关系

Figure 9. Relationship of η_prog and π_fg

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图 10 最优π_fg分布（T₂₄₅=450～700 K, p₂₄₅/p₀=4.5～9, W_2D/W₂₃=7～19）

Figure 10. Distribution of optimal π_fg （T₂₄₅=450—700 K, p₂₄₅/p₀=4.5—9, W_2D/W₂₃=7—19）

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图 11 P_ext对耗油率的影响（π_Σ=55, T₄=1800 K, δ_e=0, γ=27, W₂₂=24.65 kg/s）

Figure 11. Influence of P_ext on fuel consumption （π_Σ=55, T₄=1800 K, δ_e=0, γ=27, W₂₂=24.65 kg/s）

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图 12 P_ext迭代优化流程

Figure 12. Iterative optimization process of P_ext

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图 13 设计结果验证

Figure 13. Verification of design results

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图 14 热力循环参数对耗油率的影响

Figure 14. Effect of thermal cycle parameters on fuel consumption

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图 15 δ_e对推进系统的影响

Figure 15. Effects of δ_e on the propulsion system

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表 1 变量说明表

Table 1. Symbols

参数	说明
η	效率
π	压比
π_Σ	总增压比
W	流量
σ	总压恢复系数
P	功率
T	总温
ε	换热效率
δ	分配比例

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表 2 下标说明表

Table 2. Subscribes

下标	说明
cl	低压压气机
ch	高压压气机
bl	引气
b	燃烧室
th	高压涡轮
tl	低压涡轮
h	换热器热端
c	换热器冷端
tp	推进涡轮
fg	工质驱动风扇
fe	电推进风扇
ele	电力系统
trans	传输管路

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表 3 部件效率及总压损失

Table 3. Efficiency and total pressure loss of components

部件性能参数	数值
低压压气机等熵效率（引气压缩效率）	0.89
高压压气机等熵效率	0.87
高压涡轮等熵效率	0.90
低压涡轮等熵效率	0.91
换热效率	0.70
换热器总压恢复系数（热端）	0.95
换热器总压恢复系数（冷端）	0.95
工质传输管路总压恢复系数	0.91
推进器风扇等熵效率	0.90
推进涡轮等熵效率	0.92
电力系统传输效率	0.93

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表 4 分布式推进系统对比

Table 4. Comparison of distributed propulsion system

参数	工质驱动	部分涡轮电驱动		TeDP
参数	工质驱动	δ_e=0.4	δ_e=0.6	TeDP
π_cl	11.80	10.47	6.38
δ_bl	1.70	1.11	1.059
W_2D/W₂₃	14.90	13.55	9.20
W_23,cor/（kg/s）	15.18	10.83	15.67
W_24,cor/（kg/s）	18.70	14.12	21.62
P_ele/MW		4.95	7.72	15.22
ζ/（g/（N∙h））	47.3	46.5	46.3	49.5

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