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Temperature profiles of molten flowing polymers in a heat exchanger
Author(s) -
Forsyth T. H.,
Murphy N. F.
Publication year - 1969
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690150523
Subject(s) - thermodynamics , nusselt number , heat exchanger , materials science , rheology , tube (container) , polymer , mechanics , flow (mathematics) , chemistry , composite material , turbulence , physics , reynolds number
The Graetz‐Nusselt problem for polymeric flow in a constant wall temperature tube was studied, using a temperature‐dependent power law rheological model and temperature dependent fluid properties. Theoretical results compare within 6% of experimental results. The fluid model predicts an experimentally observed temperature maxima at a reduced radius between 0.7 and 0.8 for cooling at low flow rates.