Instantaneous planar pressure field determination around a square-section cylinder based on time resolved stereo-PIV

This paper describes the determination of instantaneous planar pressure fields from TR-PIV on a stationary square-section cylinder, with the face normal to the flow, for ReD=9,500, where D is the chord. The results from this planar pressure imaging (PPI) are compared with mean and fluctuating surface pressure data obtained with a pressure orifice and a surface-mounted microphone in two locations: at the lower surface and at the base of the model. The results for the lower surface of the model show agreement in both mean and fluctuating pressure compared with the pressure orifice and microphone data, and with previous studies. The results for the base show agreement for the mean pressure and give a good prospect for instantaneous planar pressure determination.

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