基于代理模型的倾斜式风机辅助进气门设计方法

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-09-23 DOI:10.1016/j.ast.2025.110990

Zhezhe Su , Yanbing Zheng , Jianfeng Zhu , Yancheng You

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引用次数: 0

摘要

针对电动风管风机倾转过程中唇部流动分离现象，提出了一种采用辅助进气道抑制流动分离的方法。建立了将进气道参数与风管通风机整体性能指标相关联的Kriging代理模型。采用多目标遗传优化算法选择最优进气道参数，分析了辅助进气道对倾转、起飞和巡航过程中导管风扇性能的影响。结果表明，在90°~ 24°倾斜阶段，基于单位功率推力的pareto边界优化进气道结构有效抑制了高强度侧风入流条件下的唇部流动分离。在此过程中，三维CFD模拟与一维理想单位功率推力之间的损失可以从31.7% ~ - 0.6%降低到13.5% ~ 2.1%。在起飞条件下，辅助进气道的实施增加了唇吸面积；这种进气门配置使起飞条件下单位功率推力提高1.8%。在巡航条件下，进气门内没有流动，进气门的合并对巡航性能的影响可以忽略不计。

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Surrogate model-based design method for auxiliary intake door of tilt electric ducted fans

Targeting the lip flow separation phenomenon during tilting processes of electric-driven ducted fans, a flow separation suppression method employing auxiliary intake door has been proposed. A Kriging surrogate model correlating intake door parameters with the overall performance metrics of ducted fans has been constructed. Multi-objective genetic optimization algorithms were applied to select optimal intake door parameters, with the effects of auxiliary intake door on ducted fan performance during tilting, takeoff, and cruise processes being analyzed. Results show that during the 90° to 24° tilting phase, the Pareto-frontier-optimized intake door configuration for thrust-per-unit-power effectively suppresses lip flow separation under high-intensity crosswind inflow conditions. During this process, the loss between three-dimensional CFD simulations and one-dimensional ideal thrust-per-unit-power can be reduced from a range of 31.7 % to -0.6 % down to 13.5 %-2.1 %. During takeoff conditions, the implementation of auxiliary intake door increases lip suction area; this intake door configuration enables a 1.8 % improvement in thrust-per-unit-power under takeoff conditions. During cruise conditions, no flow occurs within the intake door, and the incorporation of intake door demonstrates negligible impact on cruise performance.

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.