| 超音速条件下基于CFD的压力探针校准特性数值模拟 |
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| 引用本文： | 赵彬,赵俭.超音速条件下基于CFD的压力探针校准特性数值模拟[J].计测技术,2017,37(2):15-18. |
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| 作者姓名： | 赵彬 赵俭 |
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| 作者单位： | 中航工业北京长城计量测试技术研究所,北京,100095 |
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| 基金项目： | 国防科工局技术基础科研项目(JSJL201420513003) |
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| 摘 要： | 对超音速条件下倒角型总压探针的校准特性进行了数值模拟研究,并对影响校准特性的关键影响量进行了分析,得到了总压系数随着位置、压力、总温、马赫数几个关键参数的变化规律。数值模拟结果和实验结果进行了对比,二者较为接近。研究结果表明,安装位置的选择对倒角总压探针总压系数影响较大,探针的安装位置越接近风洞上游,总压系数绝对值越小;倒角型总压探针总压系数的绝对值随温度和压力的升高而减小,随马赫数的升高而增大。
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| 关 键 词： | 超音速 压力探针 数值模拟 校准特性 |
Numerical Simulation of Pressure Probe Calibration Based on CFD Under Supersonic Condition |
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| ZHAO Bin and ZHAO Jian.Numerical Simulation of Pressure Probe Calibration Based on CFD Under Supersonic Condition[J].Metrology & Measurement Technology,2017,37(2):15-18. |
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| Authors: | ZHAO Bin and ZHAO Jian |
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| Affiliation: | Changcheng Institute of Metrology & Measurement? Beijing 100095,China and Changcheng Institute of Metrology & Measurement? Beijing 100095,China |
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| Abstract: | The calibration characteristics of chamfering total pressure probes were studied by numerical simulation in the supersonic condition,and the key impacts of the calibration characteristics were analyzed.The total pressurecoefficient changes with position,pressure,temperature and Mach number.The numerical simulation results were compared with the experimental results.The results show that selecting the installation location has great influence on the total pressure of the chamfer total pressure probe.The absolute value of the pressure coefficient is smaller when the probe is placed nearer to the upstream of the tunnel.The absolute value of the total pressure coefficient of the chamfering total pressure probe decreases with the increasing of temperature and pressure,and increases with the increasing of a number. |
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| Keywords: | supersonic speed pressure probe numerical simulation calibration characteristic |
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