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Rheology pp 283-300 | Cite as

Thermal Effects in Polymer Flow

  • Kamil Wichterle

Abstract

Flow of polymers — polymer solutions or melts — cannot usually be described by Newton’s viscosity law. Beside of the viscosity anomaly, the polymers posses other rheological phenomena as visco-elasticity, normal stresses, memory, anisotropy of flow etc. Any rheological phenomenon can affect the flow significantly in a limited class of hydrodynamical situations only. We are not going to investigate every possible polymer behaviour, but only problems encountered in industrial polymer production and in the plastics industry. The requirement of reaching an uniform flow in industrial units as soon as possible, entails the necessity to use such arrangements where the kinematics of flow is very simple, too.

Keywords

Heat Transfer Nusselt Number Thermal Boundary Layer Local Nusselt Number Isothermal Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Kamil Wichterle
    • 1
  1. 1.Institut of Chemical Process FundamentalsCzechoslovak Academy of SciencesPragueCzechoslovakia

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