Abstract
A miniature conical five-hole probe of 30° half-angle wasnumerically calibrated for measurements of flow properties at supersonic Machnumbers in order to circumvent the traditional experimental approach, vastlydemanding on resources. The principle of a multi-hole conical probe is basedon the notion that Mach number, pressure and directionality of the incomingstream may be correlated with the combination of pressure readings on theconical probe surface and a Pitot port situated at the flat tip. Using athree-dimensional thin layer Navier-Stokes solver, calibration data weregenerated for the range of Mach numbers and pitch angles of interest. Thevalidity of the computed pressure distributions on the probe surface wassubsequently confirmed in a series of wind tunnel tests including low Machnumber and high angularity flow-field. The current study also demonstrated theprofound influence of the blunt tip on the nearby static pressure ports, itsrelevance to the ultimate modelling strategy and the resulting calibrationcharts.
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