一种拓宽五孔压力探针测量范围的方法

郭君德; 马宏伟; 范聪聪; 贠迪

doi:10.13224/j.cnki.jasp.20220295

一种拓宽五孔压力探针测量范围的方法

doi: 10.13224/j.cnki.jasp.20220295

郭君德^{1, 2},
马宏伟^{1, 2,*, ,},
范聪聪^{1, 2},
贠迪^{1, 2}

1.
北京航空航天大学能源与动力工程学院，北京 100191
2.
北京航空航天大学航空发动机气动热力国家级重点实验室，北京 100191

基金项目: 国家自然科学基金（51776011）；国家科技重大专项（2017-Ⅴ-0016-0068）；国防科技重点实验室基金（2021-JCJQ-LB-062-0204）

详细信息

作者简介:
郭君德（1996-），男，博士生，主要从事叶轮机械流场测试研究

通讯作者:
马宏伟（1968-），男，教授、博士生导师，博士，研究领域为内流实验与测试技术。E-mail：mahw@buaa.edu.cn

中图分类号: V211.7
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- 被引次数: 0
出版历程
- 收稿日期: 2022-05-01
- 网络出版日期: 2022-09-07

A method for extending measurement range of five-hole pressure probe

GUO Junde^{1, 2},
MA Hongwei^{1, 2,*
, ,},
FAN Congcong^{1, 2},
YUN Di^{1, 2}

1.
School of Energy and Power Engineering，Beihang University，Beijing 100191，China
2.
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics，Beihang University，Beijing 100191，China

摘要

摘要:
为了拓宽五孔压力探针的角度测量范围，首先在低速风洞中进行探针校准，应用拓宽方法处理校准数据，对比不同校准系数定义下探针校准曲线特性及差异，并确定五孔压力探针在低速流动中的测量范围。在此基础上，通过亚声速风洞开展不同马赫数下的适用性研究，评估该拓宽方法在可压缩流动中的应用效果。最后在风洞中进行实际测量，分析该拓宽方法的误差水平。结果表明：采用的校准系数定义可以使校准曲线在较宽的角度范围内都具有良好的单调性和较高的计算精度；在低速情况下，五孔压力探针在偏转角 ±70°、俯仰角 ±50°的测量范围内均适用；在亚声速情况下，可压缩流动对俯仰角的负向测量范围影响较大，但偏转角的测量范围仍可达到接近 ±70°。误差分析结果表明，应用该拓宽方法测量的误差水平整体较低。该拓宽五孔压力探针测量范围的方法在一些气流角变化较大的叶轮机械测试中具有很好的应用前景。
- 复杂流场测试 /
- 压力测量 /
- 五孔压力探针 /
- 校准方法 /
- 宽气流角
Abstract:
In order to extend the measurement range of five-hole pressure probe (FHPP), the probe was calibrated firstly in a low-speed wind tunnel. The extending method was applied to process the calibration data, the differences of the probe calibration curves defined by different calibration coefficients were compared, and the measurement range of the FHPP in low-speed flow was determined. On this basis, the applicability study at different Mach numbers was carried out in a subsonic wind tunnel to evaluate the application effect of the extending method in compressible flow. Finally, actual measurement was carried out in the wind tunnel to analyze the error level of the extending method. The results showed that: the calibration curve had a wider monotonic range and higher calculation accuracy after using this calibration coefficient definition. At low speed, the FHPP was applicable within the measurement range of yaw angle ±70° and pitch angle ±50°. At subsonic speed, the compressible flow had a great influence on the negative measurement range of the pitch angle, but the measurement range of the yaw angle can still reach close to ±70°. The error analysis results also showed that the error level measured by the extending method was generally lower. This method for extending the angular measurement range of FHPP has a good application prospect in some turbomachinery internal flow tests with a large angle variation range.
- complex flow field test /
- pressure measurement /
- five-hole pressure probe /
- calibration method /
- wide airflow angle

HTML

图 1 五孔压力探针结构与定义

Figure 1. Five-hole pressure probe structure and definition

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图 2 五孔压力探针传统方法校准结果

Figure 2. Five-hole pressure probe calibration results using traditional method

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图 3 低速流动情况下的区域划分

Figure 3. Division of zones under low-speed flow

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图 4 不同角度下最大压力分布

Figure 4. Maximum pressure distribution at different angles

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图 5 不同偏转角系数定义比较

Figure 5. Comparison of definitions of different yaw angle coefficients

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图 6 不同总压系数定义比较

Figure 6. Comparison of definitions of different total pressure coefficients

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图 7 中区角度系数校准结果拟合曲面

Figure 7. Fitting surface of calibration result of angle coefficients in mid-zone

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图 8 周围4区角度系数校准结果拟合曲面

Figure 8. Fitting surface of calibration result of angle coefficients in surrounding zones

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图 9 压力系数校准结果拟合曲面

Figure 9. Fitting surface of calibration result of pressure coefficients

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图 10 高速流动情况下的区域划分

Figure 10. Division of zones under high-speed flow

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图 11 不同马赫数下的校准曲线

Figure 11. Calibration curves at different Mach numbers

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表 1 左孔迎风下不同校准系数定义

Table 1. Definition of different calibration coefficients in the left zone

方法	${p_{\text{p}}}$	${C_{{\text{py}}}}$	${C_{{\text{pt}}}}$
对照方法1	${{\left( {{p_1} + {p_4} + {p_5}} \right)} \mathord{\left/ {\vphantom {{\left( {{p_1} + {p_4} + {p_5}} \right)} 3}} \right. } 3}$	${ {( { {p_2} - {p_1} } )} \mathord{/ {\vphantom { {({ {p_2} - {p_1} } )} {( { {p_2} - {p_{\text{p} } } } )} } } } {( { {p_2} - {p_{\text{p} } } } )} }$	${ {\left( { {p_2} - {p_{\text{t} } } } \right)} \mathord{\left/ {\vphantom { {\left( { {p_2} - {p_{\text{t} } } } \right)} {\left( { {p_2} - {p_{\text{p} } } } \right)} } } \right. } {( { {p_2} - {p_{\text{p} } } } )} }$
对照方法2	${{\left( {{p_1} + {p_4} + {p_5}} \right)} \mathord{\left/ {\vphantom {{\left( {{p_1} + {p_4} + {p_5}} \right)} 3}} \right. } 3}$	${ {\left[ { （{p_4} + {p_5}） /2 - {p_2} } \right]}\mathord{\left/ {\vphantom { {\left[{ （{p_4} + {p_5}）/2 - {p_2} } \right]} {\left( { {p_2} - {p_{\text{p} } } } \right)} } } \right. } {( { {p_2} - {p_{\text{p} } } } )} }$	${ {\left( { {p_{\text{s} } } - {p_{\text{t} } } } \right)} \mathord{\left/ {\vphantom { {\left( { {p_{\text{s} } } - {p_{\text{t} } } } \right)} {\left( { {p_2} - {p_{\text{p} } } } \right)} } } \right. } {( { {p_2} - {p_{\text{p} } } } )} }$
传统方法	${{\left( {{p_2} + {p_3} + {p_4} + {p_5}} \right)} \mathord{\left/ {\vphantom {{\left( {{p_2} + {p_3} + {p_4} + {p_5}} \right)} 4}} \right. } 4}$	${ {\left( { {p_2} - {p_3} } \right)} \mathord{\left/ {\vphantom { {\left( { {p_2} - {p_3} } \right)} {\left( { {p_1} - {p_{\text{p} } } } \right)} } } \right. } {( { {p_1} - {p_{\text{p} } } } )} }$	${ {\left( { {p_1} - {p_{\text{t} } } } \right)} \mathord{\left/ {\vphantom { {\left( { {p_1} - {p_{\text{t} } } } \right)} {\left( { {p_1} - {p_{\text{p} } } } \right)} } } \right. } {( { {p_1} - {p_{\text{p} } } } )} }$

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表 2 五孔压力探针拓宽方法测量误差

Table 2. Measurement error of five-hole pressure probe extending method

实验序号	区域编号	偏转角$ \alpha $/（°）	俯仰角$ \varphi $/（°）	马赫数Ma	$ {\sigma _{\alpha}} $/（°）	$ {\sigma _{\varphi}} $/（°）	$ {\sigma _{Ma}} $
1	1	−8	27	0.297	0.03	−0.21	−0.001
2	1	18	3	0.299	−0.10	−0.27	0.001
3	2	−48	27	0.298	0.18	−0.55	−0.001
4	3	68	3	0.298	0.88	−0.27	0.003
5	1	−17	3	0.48	0.36	−0.89	0.003
6	2	−57	18	0.468	0.11	−0.07	−0.001
7	1	18	26	0.47	0.43	−0.09	−0.001
8	3	48	3	0.481	0.21	0.40	−0.002

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