| 室内航空发动机进气流场流量测量数值模拟研究 |
| Numerical Simulation Study on Measurement of Inlet Flow Field of Indoor Aeroengine |
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| 中文摘要: |
| 通过对某航空发动机试车间的进气流场特性进行数值模拟研究，得出发动机试车间的进气流场流动特性，分析了流量测量误差随着测量截面以及探针深入位置的变化规律，并针对特定截面和深入位置，研究了边界层厚度随着不同马赫数和不同雷诺数的变化规律，最后对工程中的流量系数测量方法做了系统性分析。结果表明，随着测量截面向发动机进气口的推移，附面层越来越薄，压力测点越向中心区分布，测量速度越来越接近截面的平均速度；马赫数对流量系数的影响很小，流量系数随着雷诺数的增大而增大。 |
| 英文摘要: |
| Through the research of numerical simulation on the flow field characteristics of an aeroengine test between the inlet, the flow characteristics of the flow field between the engine test, analyzes the error of flow measurement with the measuring section and probes into position changes, then according to the specific section and deep position, and studied the boundary layer thickness changes with different Maher numbers and different Reynolds number, finally make a systematic analysis on the flow coefficient measurement method in engineering. The results show that the boundary layer is thinner and thinner, and the pressure measuring point is more and more distributed to the central area, and the measuring speed is more and more close to the average velocity of the section when the measurement section moves toward the engine inlet. The Maher number has little effect on the flow coefficient and the flow coefficient increases with the increase of Reynolds number. |
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| 中文关键词: 航空发动机 空气质量流量 测量方法 数值模拟 |
| 英文关键词:aircraft engine air mass flow measuring method numerical simulation |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2017.03.05 |
| 引用本文：赵彬,王毅.室内航空发动机进气流场流量测量数值模拟研究[J].计测技术,2017,37(3):29~33. |
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