{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,5]],"date-time":"2024-09-05T16:25:02Z","timestamp":1725553502120},"reference-count":18,"publisher":"ASMEDC","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,1,1]]},"abstract":"<jats:p>In polymer processing by extrusion, the thermal behavior of the components downstream of the extruder dye is of great relevance to the final characteristics of the product. In fact, the process productivity, the product dimensional quality and the physical\/mechanical properties are strongly dependent upon the cooling process. In the present work, a numerical model adequate to describe the thermal behavior of the calibrator and the polymer profile is developed and implemented as a computer code. The model is fully 3D, transient and includes a formulation for the polymer movement inside the calibrator based upon the VOF method [1]. Although for practical purposes, a steady solution is desired, the model was implemented as a transient case, to enable its accurate validation with experimental data. The interface between the extrudate and the calibrator is described through a coefficient for the thermal contact resistance. The equations were discretized in a finite volume formulation [2] and the code implemented in Fortran. The good agreement between the model and the experimental data has vindicated the accuracy of the computer model and its subsequent application in the analysis and optimization of complete calibration units. A parametric analysis for the most relevant variables, such as polymer velocity and calibrator length, demonstrated the consistency of the numerical model.<\/jats:p>","DOI":"10.1115\/imece2006-14433","type":"proceedings-article","created":{"date-parts":[[2008,4,2]],"date-time":"2008-04-02T11:55:52Z","timestamp":1207137352000},"page":"487-494","update-policy":"http:\/\/dx.doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":0,"title":["A Numerical Study of the Thermal Behaviour of Calibrators for Polymer Extrusion"],"prefix":"10.1115","author":[{"given":"P. A. M.","family":"Lobarinhas","sequence":"first","affiliation":[{"name":"University of Minho"}]},{"given":"J. C. F.","family":"Teixeira","sequence":"additional","affiliation":[{"name":"University of Minho"}]},{"given":"S. F. C. F.","family":"Teixeira","sequence":"additional","affiliation":[{"name":"University of Minho"}]}],"member":"33","published-online":{"date-parts":[[2007,12,14]]},"reference":[{"unstructured":"Ubbink, O - \u2018Numerical Prediction of two Fluid Systems with Sharp Interfaces\u2019, PhD Thesis, University of London, 1997.","key":"2020011005385577400_r1"},{"doi-asserted-by":"crossref","unstructured":"Ferziger, J.H. e Peric, M. (2000), \u201cComputational Methods for Fluid Dynamics\u201d, Springer, New York.","key":"2020011005385577400_r2","DOI":"10.1007\/978-3-642-98037-4"},{"unstructured":"Lobarinhas, P; Teixeira, SF and Teixeira, JCF - \u2018The Application of Unstructured Grids for Modelling Thermal Cooling in Polymer Extrusion\u2019, in 16th ICPR, 2001.","key":"2020011005385577400_r3"},{"unstructured":"Teixeira\n              JCF\n            ; CovasJ; TeixeiraSF; CarneiroO and OliveiraP - \u2018Design and Optimisation of Calibrators for Thermoplastics Profile Extrusion\u2019, in NAFEMS World Congress \u201997, Vol. 1, pp 606\u2013615, Nafems Publications. 1997.","key":"2020011005385577400_r4"},{"unstructured":"Kleindienst\n              V.\n            \n           (1973) \u201cEffective Parameters for Vacuum Calibration of Extruded Plastic Pipes\u201d, translated from Kunststoffe -German Plastics Stuttgart, Vol. 63, 7\u201311.","key":"2020011005385577400_r5"},{"unstructured":"Menges\n              G.\n            , KalwaM. (1989), \u201cOptimisation of the Cooling Process in Blow Moulding\u201d, Kunststoffe-German Plastics, Vol. 79, 88\u201391.","key":"2020011005385577400_r6"},{"unstructured":"Pittman, J., Whitham, G.P. e Beech, S. (1992), \u201cThe Cooling Phase of Large Pipe Manufacture\u201d, Plastics Pipes VIII Pri Eindhoven.","key":"2020011005385577400_r7"},{"doi-asserted-by":"crossref","unstructured":"Sheehy\n              P.\n            , TanguyP. A. (1994), \u201cA Finite Model for Complex Profile Calibration\u201d, Polymer Engineering and Science, Vol. 34, 8, 650\u2013656.","key":"2020011005385577400_r8","DOI":"10.1002\/pen.760340806"},{"unstructured":"Fradette\n              L.\n            , TanguyP. A., ThibaultF., SheehyP. (1995), \u201cOptimal Design in Profile Extrusion Calibration\u201d, Journal of Polymer Engineering, Vol. 14 (4), Pa\u00b4g. 295\u2013322.","key":"2020011005385577400_r9"},{"unstructured":"Lingenheil\n              M.\n            , KaltentalPraller, A. (1997), \u201cIce-cold inside\u201d, translated from Kunststoffe Plast Europe, Vol. 87, 162\u2013164.","key":"2020011005385577400_r10"},{"unstructured":"Szarvasy, I. (2000), \u201cSimulation of Complex PVC Window Profile Cooling During Calibration With Particular focus on Internal Heat Exchange\u201d, 3rd Esaform Conference on Material Forming, 27\u201330.","key":"2020011005385577400_r11"},{"unstructured":"Placek, L., Svabik, J. Vlcek, J. (2000), \u201cCooling of Extruded Plastics Profiles\u201d, 131\u2013132.","key":"2020011005385577400_r12"},{"unstructured":"Conrad, U., Pittman, John F.T. (2000) \u201cPVC Profile Calibration: Comprehensive Trials Relating Process Outcomes and Operating Conditions\u201d, 3rd ESAFORM Conference on Material Forming, 23\u201326.","key":"2020011005385577400_r13"},{"unstructured":"Lobarinhas, P.A.M. (2003), \u201cEstudo e Modelac\u02c6a\u02dco do Arrefecimento de Extrudidos em Calibradores\u201d, PhD thesis, Universidade do Minho.","key":"2020011005385577400_r14"},{"unstructured":"Veersteeg, H.K., Malalasekera, W., (1995) \u201cAn Introdution to Computational Fluid Dynamics - The Finite Volume Method\u201d, Longman Group, London.","key":"2020011005385577400_r15"},{"unstructured":"Muzaferija, S.M.; Peric, M. (1998), \u201cComputation of Free Surface Flows using Interface-Tracking and Interface-Capturing Methods\u201d, Fluids Dynamics and Ship Theory Section, Hamburg.","key":"2020011005385577400_r16"},{"doi-asserted-by":"crossref","unstructured":"Stone\n              H. L.\n            \n           (1968) \u201cIterative Solution of Implicit Approximations of Multidimensional Partial Differential Equations\u201d, SIAM Journal Numerical Analysis, 5, 530\u2013558.","key":"2020011005385577400_r17","DOI":"10.1137\/0705044"},{"doi-asserted-by":"crossref","unstructured":"Lobarinhas, P; Teixeira, SF and Teixeira, JCF -\u2018Development of an experimental facility to test polymer extrusion\u2019, in ASME Conference, 2006.","key":"2020011005385577400_r18","DOI":"10.1115\/IMECE2006-14428"}],"event":{"sponsor":["Heat Transfer Division"],"acronym":"IMECE2006","name":"ASME 2006 International Mechanical Engineering Congress and Exposition","start":{"date-parts":[[2006,11,5]]},"location":"Chicago, Illinois, USA","end":{"date-parts":[[2006,11,10]]}},"container-title":["Heat Transfer, Volume 3"],"original-title":[],"link":[{"URL":"http:\/\/asmedigitalcollection.asme.org\/IMECE\/proceedings-pdf\/doi\/10.1115\/IMECE2006-14433\/4573033\/487_1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/asmedigitalcollection.asme.org\/IMECE\/proceedings-pdf\/doi\/10.1115\/IMECE2006-14433\/4573033\/487_1.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,1,10]],"date-time":"2020-01-10T05:39:47Z","timestamp":1578634787000},"score":1,"resource":{"primary":{"URL":"https:\/\/asmedigitalcollection.asme.org\/IMECE\/proceedings\/IMECE2006\/47861\/487\/322362"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,1,1]]},"references-count":18,"URL":"https:\/\/doi.org\/10.1115\/imece2006-14433","relation":{},"subject":[],"published":{"date-parts":[[2006,1,1]]}}}