Pressure sensitive paint measurement correction method based on surface spline interpolation

JING Zhiwei; WANG Libo; TANG Chu

doi:10.11729/syltlx20220027

Volume 37 Issue 6

Dec. 2023

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Journal of Experiments in Fluid Mechanics > 2023 > 37(6): 112-119. > DOI: 10.11729/syltlx20220027

JING Z W, WANG L B, TANG C. Pressure sensitive paint measurement correction method based on surface spline interpolation[J]. Journal of Experiments in Fluid Mechanics, 2023, 37(6): 112-119. DOI: 10.11729/syltlx20220027

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Pressure sensitive paint measurement correction method based on surface spline interpolation

1.
The First Aircraft Institute, Aviation Industry Corporation of China, Ltd., Xi'an　710089, China
2.
Unmanned System Research Institute, Northwestern Polytechnical University, Xi'an　710072, China

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Received Date: March 21, 2022
Revised Date: April 10, 2022
Accepted Date: April 20, 2022
Available Online: November 14, 2022

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Abstract

Abstract

The PSP (Pressure Sensitive Paint) measurements correction after the wind tunnel test is often implemented through the least square method, and it tends to neglect the chordwise and spanwise flow characteristics on the wing. By employing the IPS (Infinite Plate Spline) technique, a hybrid correction method and process for the PSP test results was presented. A full-span airplane model, with PSI (Pressure Scanner Instrument) and PSP on the upper and lower surfaces of the wing, was utilized to carry out the PSP test and PSI test simultaneously in a transonic wind tunnel with the 2.4 m test section. The pressure measurements were conducted at Ma = 0.735 and in the angle of attack range from −6.38° to 10.59°. Test results indicate that the PSP data demonstrate a good agreement with PSI data. However, the PSP test system with only one camera shows a poor capacity to capture the aerodynamic field at the wing leading edge. The hybrid correction method for PSP results has proven to an effective approach, and the corrected data reveal that the hybrid correction can better deal with the pressure distribution characteristics of the full wing.
- wind tunnel test,
- pressure sensitive paint,
- pressure distribution,
- infinite plate spline

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