Frequency response correction of hot-film measurements in a turbulent airflow

摘要

Turbulence measurements were performed in a fully developed turbulent pipe flow using a wedged-shaped hot-film probe. The dynamic sensitivity of hot-film probes is frequency dependent and cannot be obtained from static calibration. As it is complicated to make a dynamic calibration, a correction method for the turbulent energy spectrum is used instead. The measurements were compared with hot-wire turbulence measurements and show good agreement. [References: 15]