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Pré-Publication, Document De Travail Année : 2015

A New Energy Conservation Scheme for the Numeric Study of the Heat Transfer in Profile Extrusion Calibration

Résumé

Thermoplastic extrusion processes use a dry calibration/cooling system, composed by one or several calibrators in series. One of the major difficulties in the modelling is to prescribe adequate values for the heat transfer coefficients between the polymer and the cooler or the air. We present an optimization procedure coupled with a finite volume method to evaluate such coefficients from experimental data. The tecnhique is based in a new conservative second-order finite volume scheme using a cell-to-vertex interpolation to solve the thermal problem involving a specific method to take the discontinuities (temperature, velocity, and thermal conductivity) into account. We have also performed a sensitive analysis of the different parameters of the problem to evaluate the variation of the thermal transfer coefficient with respect to parameters such as velocity or inflow temperature.
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Dates et versions

hal-01176796 , version 1 (16-07-2015)

Licence

Paternité - Pas d'utilisation commerciale

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  • HAL Id : hal-01176796 , version 1

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Filipe Marques, Stéphane Clain, Gaspar Machado, Bruno Martins, Miguel João Nóbrega. A New Energy Conservation Scheme for the Numeric Study of the Heat Transfer in Profile Extrusion Calibration. 2015. ⟨hal-01176796⟩

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