Abstract
The analysis of the error propagation from the velocity field to the pressure field using the pressure estimation method proposed by Jeon et al (2015 11th Int. In Symp. Part. Image Velocim. PIV15) is achieved. The accuracy of the method is assessed based on numerical data. The flow around a rigid profile (NACA0015) with a free tip is considered. From the numerical simulation data, tomographic-PIV (TPIV)-like data are generated. Two types of error are used to distort the data: a Gaussian noise and a pixel-locking effect are modelled. Propagation of both types of error during the pressure estimation process and the effect of the TPIV resolution are evaluated. Results highlight the importance of the resolution to accurately estimate the pressure in presence of small structures but also to limit the propagation of error from the velocity to the pressure. The study of the sensitivity of the method for the two models of errors, Gaussian or pixel-locking, shows different trends. This reveals also the importance of the model of errors for the analysis of the uncertainties for PIV-based pressure.
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