The present paper addresses the measurement errors in temperature due to the effects of surface-mounted temperature sensors like thermocouples. Heat conduction into or from the installed thermocouple wires can alter the temperature at the thermocouple junction as well as in its immediate vicinity. As a result, the emf appearing at the thermocouple terminals does not correspond to the actual surface temperature. In this paper, we present a dual-scale computational method that can be used to calculate the transient temperatures at the multiple thermocouple junctions during heating or cooling of an object. The basis of the method is a thermocouple submodel embedded in a FEM model for the parent object. The numerical results of the dual-scale computational model are compared with that of the conventional FEM models as well as the analytical solutions available. This paper also discusses the characteristics of surface-mounted thermocouples in a range of configurations.
A Dual-Scale Computational Method for Correcting Surface Temperature Measurement Errors
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division January 8, 2003; revision received April 20, 2004. Associate Editor: A. F. Emery.
- Views Icon Views
- Share Icon Share
- Search Site
Tszeng , T. C., and Zhou, G. F. (April 20, 2004). "A Dual-Scale Computational Method for Correcting Surface Temperature Measurement Errors ." ASME. J. Heat Transfer. August 2004; 126(4): 535–539. https://doi.org/10.1115/1.1773585
Download citation file: