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  • Error propagation from the PIV-based pressure gradient to the integrated pressure by the omni-directional integration method
Title: Error propagation from the PIV-based pressure gradient to the integrated pressure by the omni-directional integration method
Characterization of the accuracy of the pressure reconstruction methods is of critical importance in understanding their capabilities and limitations. This paper reports for the first time a comprehensive theoretical analysis, numerical simulation and experimental validation of the error propagation characteristics for the omni-directional integration method, which has been used for pressure reconstruction from the PIV measured pressure gradient. The analysis shows that the omni-directional integration provides an effective mechanism in reducing the sensitivity of the reconstructed pressure to the random noise imbedded in the measured pressure gradient. Both the numerical and experimental validation results show that the omni-directional integration methods, especially the rotating parallel ray method, have better performance in data accuracy than the conventional Poisson equation approach in reconstructing pressure from noise embedded experimental data.  more » « less
Award ID(s):
1933176
PAR ID:
10157385
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Proceedings of the 13th International Symposium on Particle Image Velocimetry
Page Range / eLocation ID:
3.4.B Pressure & Force IV
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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