| 基于MDO策略的民用航空发动机概念设计研究 |
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| 引用本文： | 闫成,尹泽勇,郭福水,申秀丽,罗钜,龙丹,赵诗棋.基于MDO策略的民用航空发动机概念设计研究[J].航空动力学报,2017,32(8):1911-1921. |
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| 作者姓名： | 闫成 尹泽勇 郭福水 申秀丽 罗钜 龙丹 赵诗棋 |
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| 作者单位： | 1.北京航空航天大学 能源与动力工程学院，北京 100191 |
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| 摘 要： | 以某型民用涡扇航空发动机概念设计为例，集成了总体方案（包括热力循环分析、质量评估、噪声评估、氮氧化物排放评估）、风扇（包括气动设计、强度分析）、低压涡轮（包括气动设计、强度分析）3个子系统，以设计点耗油率、整机质量、飞越状态总声功率级、进近状态总声功率级和燃烧室氮氧化物排放量为优化目标，进行了基于多目标的整机多学科设计优化（MDO）的研究。对比研究了单学科可行(IDF)、协作优化(CO)和不对称子空间优化 (ASO)3种典型的优化策略及其在整机MDO中的应用，探讨了整机 MDO的建模方法、子系统间数据传递及解耦方式。结果表明:3种策略优化效率相当，优化时间最大相差742s；CO策略与ASO策略在整机MDO应用中优化效果较好，综合评价指标分别降低了0.82%和0.86%。
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| 关 键 词： | 概念设计 MDO策略 IDF策略 CO策略 ASO策略 |
| 收稿时间： | 2016/4/1 0:00:00 |
Research on the conceptual design of a civil aero-engine based on MDO strategies |
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| YAN Cheng,YIN Zeyong,GUO Fushui,SHEN Xiuli,LUO Ju,LONG Dan,ZHAO Shiqi.Research on the conceptual design of a civil aero-engine based on MDO strategies[J].Journal of Aerospace Power,2017,32(8):1911-1921. |
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| Authors: | YAN Cheng YIN Zeyong GUO Fushui SHEN Xiuli LUO Ju LONG Dan ZHAO Shiqi |
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| Abstract: | The conceptual design of a civil turbofan aero-engine was studied. Three subsystems were integrated and analyzed in detail including: overall performance (analysis of thermodynamic cycle, assessment of mass, noise, oxynitride emissions), fan (analysis of aerodynamics and strength), low pressure turbine (analysis of aerodynamics and strength). Multidisciplinary design optimization (MDO) of the engine conceptual design was carried out with different optimization strategies but for the same optimization objects, i.e.: specific fuel consumption, overall mass, overflight noise power level, approaching noise power level, and oxynitride emissions of the combustor. Optimization strategies including individual discipline feasible (IDF) optimization, collaborative optimization (CO) and asymmetric subspace optimization (ASO), were adopted in the MDO study of aero-engine. The modeling method of the MDO engine system, the data transmission and the decoupling method of the subsystems were discussed. Finally, the following conclusions were drawn: the efficiencies of the three optimization strategies were approximately equal, and the difference of the maximum time consumption between every two of them was 742s. Moreover, CO and ASO strategies had better optimization results in the MDO of aero-engine conceptual design, and their comprehensive evaluation index were reduced by 0.82% and 0.86% respectively. |
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| Keywords: | conceptual design MDO strategy IDF strategy CO strategy ASO strategy |
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