Distortion in Thermal Field Around Inserted Thermocouples in Experimental Interfacial Studies—Part II: Effect of the Heat Flow Through the Thermocouple

[+] Author and Article Information
M. H. Attia

Tribology and Mechanical Processes Unit, Ontario Hydro Research, Toronto, Ontario, Canada

L. Kops

Department of Mechanical Engineering, McGill University, Montreal, Quebec, Canada

J. Eng. Ind 110(1), 7-14 (Feb 01, 1988) (8 pages) doi:10.1115/1.3187847 History: Received September 25, 1987; Online July 30, 2009


The effect of heat flow along thermocouple wires on the disturbance in a two-dimensional steady temperature field around the thermocouple hole is investigated. The hole is located at a finite distance from an isothermal heat input boundary in a direction perpendicular to the heat flow lines. Using the electrical analog technique, a method was devised to simulate the partial heat flow through the thermocouple leads. The developed computer-aided scanning and measurement system allowed detailed examination of the disturbed temperature field. The error in the temperature sensed by the thermocouple is evaluated and presented in a dimension less form for a wide range of partial heat flow rates.

Copyright © 1988 by ASME
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