This study aimed to measure pressure-related turbulence statistics such as the velocity–pressure or the pressure–strain correlations. To do so, the pressure field evaluation based on the velocity data measured by particle image velocimetry (PIV) was combined with direct single-point-measurement by miniature static pressure probes (SP-probe). The instantaneous pressure field was derived from the measurement results by PIV, and the pressure fluctuations associated with the large-scale vortex motion were extracted using the instantaneous pressure directly measured by the SP-probe as a reference signal. The measurement was taken in a turbulent near wake of a circular cylinder. After the validity of the instantaneous pressure evaluated from the PIV data was addressed, the velocity–pressure correlation and the pressure–strain correlation were investigated.
Experiments in Fluids – Springer Journals
Published: Jun 28, 2014
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