A novel heat transfer coefficient identification methodology for the profile extrusion calibration stage. (25th June 2016)

• Record Type: Journal Article
• Authors: Marques, Filipe; Clain, Stéphane; Machado, Gaspar J.; Martins, Bruno; Carneiro, Olga S.; Nóbrega, João M.
• Is Part Of: Applied thermal engineering. Volume 103(2016:Jun.)
• Page Start: 102
• Page End: 111
• Publication Date: 2016-06-25
• Subjects: Profile extrusion cooling stage -- Heat transfer coefficient identification -- Fitting -- Finite volume method -- Polymer flow; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2016.04.013
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: A method to compute heat transfer coefficient is proposed. It is modeled the extrusion cooling/calibration stage for thermoplastic profiles. The methodology involves a finite volume code and a fitting procedure. A real case study demonstrates the advantages of using the new proposed methodology. Abstract: A new method to compute heat transfer coefficients of the profile extrusion process calibration stage, in conjunction with a prototype calibration system (Carneiro et al., 2013), is proposed. The methodology involves two major ingredients: a numerical modeling code and a fitting procedure. The code, based on the Finite Volume Method, computes the steady-state solution for the heat transfer problem. The software carefully handles discontinuous solutions as well as discontinuities of the velocity and the material characteristics. Fitting procedure introduces alternative algorithms we have tested and assessed in Marques et al. (submitted for publication). A real case study demonstrates the advantages of using the new proposed methodology when compared with the previously applied (Carneiro et al., 2013).