Sensitivity of the Heat Transfer Coefficient Calculation (CROSBI ID 202465)
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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
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
3 (4)
2014.
184-209
objavljeno
2165-3992
10.1520/MPC20140006
Povezanost rada
Matematika, Strojarstvo