Curved surface pressure measurement based on light-field imaging and PSP

Li Haotian; Xu Shengming; Zhao Zhou; Zhang Hanmo; Shi Shengxian

doi:10.11729/syltlx20180036

Volume 32 Issue 3

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Li Haotian, Xu Shengming, Zhao Zhou, et al. Curved surface pressure measurement based on light-field imaging and PSP[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(3): 75-81. doi: 10.11729/syltlx20180036

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Curved surface pressure measurement based on light-field imaging and PSP

doi: 10.11729/syltlx20180036

1.
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2.
Shanghai Aerospace Control Technology Institute, Shanghai Key Laboratory of Space Intelligent Control Technology, Shanghai 201109, China

Received Date: 2018-03-09
Rev Recd Date: 2018-04-16
Publish Date: 2018-06-25

Abstract

Abstract

This paper presents a novel single camera light-field three-dimensional pressure measurement technique (LF-3DPSP), which consists of light field 3D reconstruction and pressure sensitive paint. The technique uses a light-field camera to capture the wind-on, wind-off and model geometry images, which has a similar experimental procedure as the traditional 2D PSP method. The proposed technique was validated with a Ma5 truncated cone model test. The results show that LF-3DPSP is capable of measuring the surface pressure distribution on relatively large curvature 3D models with high accuracy, and the pressure results agree favourably with those of the schlieren test.
- light-field camera,
- PSP,
- 3D surface pressure measurement,
- depth estimation

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References

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