ISSN Online: 2377-424X
ISBN Print: 1-56032-797-9
International Heat Transfer Conference 11
Numerical Analysis of Air Flow and Heat Transfer in Tubular-Blown Film Processing
要約
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.