Abstract
In temperature measurement of fluid flows, heat conduction along the temperature-sensor body and/or its supports may cause large measurement errors. In the present study, a new theoretical analysis scheme for the heat-conduction error has been proposed to obtain accurate measurements in fluctuating temperature fields with mean-temperature gradients. The validity of the scheme has been verified experimentally to appraise the reliability and applicability of the present physical model for analyzing the heat-conduction error. The results show that the proposed scheme provides a useful guideline for selecting appropriate temperature sensors and enables us to evaluate accurately the heat-conduction errors in mean and r.m.s. temperature measurements.
