WIT Press


Influence Of Material Thermal Properties On Instantaneous Heat Flux Measurements Using An Eroding Thermocouple

Price

Free (open access)

Paper DOI

10.2495/HT000571

Volume

27

Pages

10

Published

2000

Size

255 kb

Author(s)

S. Jedrzejowski

Abstract

Measurements of instantaneous surface temperature are used for calculation of heat flux exchanged by the surface. The temperature sensor installed for this purpose disturbs the wall temperature distribution and therefore causes calculation errors. In the paper the analysis of the wall surface temperature measured by the eroding thermocouple is presented. The wall with the sensor built in was modelled and the heat conduction in the wall, with unsteady boundary condition, was solved using finite element method. The modelling results are shown for different wall materials with significantly different thermal properties (aluminium, steel and stainless steel). Results are compared to the experimental measurements taken in a single cycle reciprocatin

Keywords