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Sensitivity of the Heat Transfer Coefficient Calculation (CROSBI ID 202465)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Singer, Saša Sensitivity of the Heat Transfer Coefficient Calculation // Materials performance and characterization, 3 (2014), 4; 184-209. doi: 10.1520/MPC20140006

Podaci o odgovornosti

Singer, Saša

engleski

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 by 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.

quenching ; heat transfer coefficient ; surface temperature ; core temperature ; sensitivity ; finite volume method ; numerical simulation

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Podaci o izdanju

3 (4)

2014.

184-209

objavljeno

2165-3992

10.1520/MPC20140006

Povezanost rada

Matematika, Strojarstvo

Poveznice
Indeksiranost