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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

Numerical Analysis of Air Flow and Heat Transfer in Tubular-Blown Film Processing

Get access (open in a dialog) DOI: 10.1615/IHTC11.300
pages 175-179

Abstract

Numerical simulation of tubular-blown film processing of plastics provides a tool for air-ring designs and suitable polymer properties. Although cooling air plays a key role in its processing ability and film properties, there have been few studies taking correct account of the cooling-air effect. We have performed a numerical analysis of cooling air flow and heat transfer from the surface of molten polymer using turbulence models. We have then simulated a tubular-blown film process under the thermal boundary conditions estimated from the numerical analysis. The film-bubble shape predicted has coincided well with experimental data.