| 基于热动力分析的飞机液压系统数值预测 |
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| 引用本文： | 苏向辉,许锋,昂海松.基于热动力分析的飞机液压系统数值预测[J].南京航空航天大学学报(英文版),2003,20(2):159-164. |
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| 作者姓名： | 苏向辉 许锋 昂海松 |
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| 作者单位： | 南京航空航天大学航空宇航学院,南京,210016,中国 |
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| 摘 要： | 根据传热学基本原理建立了主要液压系统元件的数学模型．运用差分法对飞机液压系统中液压油和壳体的动态传热过程进行了研究，为飞机液压系统在各种工况下的温度变化趋势进行预测提供了一种有效的工具。本对某型教练机的液压系统在地面试车及飞行中减速板收放两种工况下进行了数值预测与仿真,计算结果与实验数据吻合较好。
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| 关 键 词： | 飞机 液压系统 数值预测 热动力分析 压力损失 传热学 |
NUMERICAL PREDICTION OF AIRCRAFT HYDRAULIC SYSTEM BASED ON THERMAL DYNAMIC ANALYSIS |
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| SU Xiang-hui,XU Feng,ANG Hai-song.NUMERICAL PREDICTION OF AIRCRAFT HYDRAULIC SYSTEM BASED ON THERMAL DYNAMIC ANALYSIS[J].Transactions of Nanjing University of Aeronautics & Astronautics,2003,20(2):159-164. |
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| Authors: | SU Xiang-hui XU Feng ANG Hai-song |
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| Abstract: | A mathematical model of principal elements of the aircraft hydraulic system is presented based on the heat transfer theory. The dynamic heat transfer process of the hydraulic oil and the pump shells within an aircraft hydraulic system are analyzed by the difference method. A kind of means for the prediction to variational trends of the aircraft hydraulic system temperature is provided during operation. The numerical prediction and simulation under the operational conditions are presented for ground trial running and the decelerated operation in flight. Computational results show that there is a good coincidence between the experimental data and the numerical predictions. |
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| Keywords: | hydraulic system head loss thermal dynamic analysis numerical prediction |
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