Effect of thermocouple insertion depth in multiple directions on temperature measurements

Abstract

Detailed computational fluid dynamics models of mineral insulated metal sheath thermocouples are discussed, and thermocouple readings in clean flames are verified against experimental thermocouple data for a Hencken burner flame available in the literature. Computational results present thermocouple temperature readings as a function of thermocouple insertion depth in three-dimensional directions. Computational temperature correlations are plotted against nondimensional insertion depth and insertion height above the burner. Overall predictions showed excellent agreement with experimental data. Deviations occurred as the thermocouple tip was moved further away from burner edges due to axial heat losses.

Keywords

computational fluid dynamics combustion heat transfer modeling and simulation validation thermocouples

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