Journal Published Online: 12 September 2014
Volume 3, Issue 4

Sensitivity of the Heat-Transfer Coefficient Calculation



The purpose of the Liščić/Petrofer probe is to determine the cooling intensity during liquid quenching in laboratory and workshop environments. The surface heat-transfer coefficient is calculated by the one-dimensional finite-volume method from the smoothed temperature curve, measured at a near-surface point in the probe. Smoothed reference temperature curves for oil and water, based on measurements made with the probe, are used in a series of numerical experiments to investigate the sensitivity of the calculation with respect to various input parameters of the problem, such as thermal properties of the material, the near-surface thermocouple position, and the diameter of the probe. These results are relevant for other liquid quenchants, at least qualitatively, if not quantitatively. A similar type of analysis is conducted with respect to the variation of numerical simulation parameters in the finite-volume method—the choice of space and time steps for problem discretization. When the input curves are sufficiently smooth, the method itself is very reliable.

Author Information

Singer, Saša
Dept. of Mathematics, Faculty of Science, Zagreb, HR
Pages: 26
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: MPC20140006
ISSN: 2165-3992
DOI: 10.1520/MPC20140006