J A Peacock and J W Stairmand 1983 J. Phys. E: Sci. Instrum. 16 571 doi:10.1088/0022-3735/16/6/026
J A Peacock and J W Stairmand
Show affiliationsVelocity probes consisting of heated thin films mounted on the front of 0.90 mm diameter cylinders have been calibrated in the centre-line position of a pipe using theoretical predictions of the steady-flow velocity profile. The theoretical model interpolates between the laminar and fully turbulent regimes and accounts for the effects of entry length. The response of the probes in unsteady flows was found to be quasi-steady to within 5% for frequencies up to 5 Hz. These results were obtained in sinusoidal towing-tank flows and in oscillatory pipe flows of large pulsatile Reynolds number. For the pipe flows studied, the gauges could be located in the centre-line position at both 230 mm and 1.6 m from the pipe entrance, that is within the inlet and filled regions of the steady-flow entry length.
Issue 6 (June 1983)
J A Peacock and J W Stairmand 1983 J. Phys. E: Sci. Instrum. 16 571
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