Flow Gradient Corrections on Hot-Wire Measurements Using an X-Wire Probe.

摘要

A method has been developed to correct hot wire measurements by means of a single X-wire probe for the effect of gradients normal to the plane of the wires in the mean flow velocities as well as in the turbulence intensities. Data processing is performed in an iterative way, using the results of measurements with different probe rolling angles, to determine the gradient corrections along the traverse from the previous loop. The method has been applied to measurements in the wake above the trailing edge flap of a wing and it is shown in the report that substantial improvements in the results have been achieved.