Investigation on error correction method of five-holes probes used in flow field with large velocity gradient

XIE Jinwei; GUO Tao; ZHANG Jing; LIU Cunliang

doi:10.11729/syltlx20230009

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Article Navigation > Journal of Experiments in Fluid Mechanics > 2023 > Accepted Manuscript

XIE J W, GUO T, ZHANG J, et al. Investigation on error correction method of five-holes probes used in flow field with large velocity gradient[J]. Journal of Experiments in Fluid Mechanics, doi: 10.11729/syltlx20230009

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Investigation on error correction method of five-holes probes used in flow field with large velocity gradient

doi: 10.11729/syltlx20230009

1.
Sichuan Gas Turbine Establishment, Aero Engine Corporation of China, Chengdu　610500, China
2.
School of Power and Energy, Northwestern Polytechnical University, Xi’an　710129, China

Received Date: 2023-02-01
Accepted Date: 2023-05-17
Rev Recd Date: 2023-03-21

Available Online: 2023-06-25

Abstract

Abstract

In order to explore the distortion characteristics of the five-holes probe under a large gradient flow field (ΔV/V), a data processing method for correcting the measurement error caused by the velocity gradient is established. An investigation based on the five-holes probe principle is employed to reveal the effect of the flow angle and velocity gradient on the measurement error. A correct method is proposed and verified by the experiment. The results show: the measurement error of the velocity value is far less than that of the flow angle and can be ignored in ordinary range (ΔV/V = ± 0.3 in this paper). The measurement error of the flow angle is usually notable. The error is affected by the velocity gradient and flow angle. The results of the experiment confirm that the correction method based on the velocity gradient and flow angle can reduce the angle error effectively.
- flow flied with large velocity gradients,
- five-holes probes,
- distortion characteristics,
- correction method

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References(18)

References

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