TURBULENCE MEASUREMENTS IN A FLOW PART OF TURBOMACHINES USING A HIGH-FREQUENCY PRESSURE PROBE

摘要

In the present paper the method for determiningturbulent flow characteristics in a flow part ofturbomachines using a high-frequency pressureprobe is presented.In the paper is shown how to use a highfrequencypressure probe to determine theReynolds stress tensor and the turbulenceintensity of a gas flow, to find an onedimensionalpower spectrum, to find turbulentlength scales and the dissipation rate of aturbulent kinetic energy in locally homogeneousand locally isotropic flows.Some drawbacks of the method fordetermining turbulent flow characteristicsrelated to the probe head’s geometry arepointed.