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The effect of compressibility on the pressure reading of a Prandtl pitot tube at subsonic flow velocity

机译：压缩性对普朗特皮托管在亚音速流速下的压力读数的影响

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Errors arising from yawed flow were also determined up to 20 degrees angle of attack. In axial flow, the Prandtl pitot tube begins at w/a approx. = 0.8 to give an incorrect static pressure reading, while it records the tank pressure correctly, as anticipated, up to sonic velocity. Owing to the compressibility of the air, the Prandtl pitot tube manifests compression shocks when the air speed approaches velocity of sound. This affects the pressure reading of the instrument. Because of the increasing importance of high speed in aviation, this compressibility effect is investigated in detail.

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Walchner, O;
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年度 1939
页码 1-13
总页数 13
原文格式 PDF
正文语种 eng
中图分类工业技术;
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1. Experimental study of inclined jets cross flow interaction in compressible regime. I. Effect of compressibility in subsonic regime on velocity and temperature fields [J] . Rabah Dizene, Jean-Marc Charbonnier, Eva Dorignac, International Journal of Thermal Sciences . 2000,第3期

机译：斜射流在可压缩状态下横流相互作用的实验研究。 I.亚音速状态下可压缩性对速度和温度场的影响
2. A comparative study of flow rate characteristics of an averaging Pitot tube type flow meter according to H parameters based on two kinds of differential pressure measured at the flow meter with varying air temperature [J] . Dae-San Oh, Choong-Hoon Lee Journal of Mechanical Science and Technology . 2011,第8期

机译：基于两种空气温度变化的流量计测得的两种压差，基于H参数的平均皮托管型流量计流量特性的比较研究。
3. A comparative study of flow rate characteristics of an averaging Pitot tube type flow meter according to H parameters based on two kinds of differential pressure measured at the flow meter with varying air temperature [J] . Dae-San Oh, Choong-Hoon Lee Journal of Mechanical Science and Technology . 2011,第8期

机译：基于两种空气温度变化的流量计测得的两种压差，基于H参数的平均皮托管型流量计流量特性的比较研究。
4. Pitot tube velocity measurement technology for the compressible airflow and its application in wind tunnel [C] . Yang Zhaoxin, Gu Zhenghua, Zhang Wenqing International Conference on Intelligent Control, Measurement and Signal Processing and Intelligent Oil Field . 2021

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5. Experimental High Speed Compressible Subsonic Flow Pressure Losses Across Gate, Butterfly and Ball Valves and Their Use in Natural Gas Transmission Flow Control Simulation Software. [D] . Gomes, Kirk J. 2011

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6. Spectroscopic Techniques versus Pitot Tube for the Measurement of Flow Velocity in Narrow Ducts [O] . Francesco D’Amato, Silvia Viciani, Alessio Montori, 2020

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7. A Discussion of the Application of the Prandtl-Glauert Method to Subsonic Compressible Flow over a Slender Body of Revolution [O] . Lees Lester 1946

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The effect of compressibility on the pressure reading of a Prandtl pitot tube at subsonic flow velocity

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