## Elongational flows: aspects of the behaviour of model elasticoviscous fluids |

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### Contents

Inti oduction v vc1 ws | 1 |

Constitutive equations | 20 |

Experimental methods and results | 71 |

Copyright | |

4 other sections not shown

### Common terms and phrases

Acierno Acta approximation Astarita behaviour biaxial stretching boundary conditions Bubble inflation Cogswell constant force constant strain rate constant stress constitutive equation convected Maxwell model corresponding cylinder Dealy decreases deformation discuss eigenvalues elastic elongational flows elongational viscosity equal biaxial experimental experiments extensional flow fibre function generalised Giesekus gives hence increases inertia initial conditions integral kinematics LDPE linear Marrucci material Matovich measured Meissner melt spinning Metzner molecular mass molecule motion Newtonian fluid Newtonian liquid Non-Newtonian Fluid Non-Newtonian Fluid Mech nonlinear obtained parameters Pearson polyethylene polyisobutylene polymer polymer melts polymer solutions polymeric liquids polymethyl methacrylate polystyrene predictions rate of strain ratio relaxation Rheol rheology shear and elongation shear flow shear rate simple shear specimen spinnability steady flow strain tensor stretching flow strip biaxial extension surface tension take-up technique temperature tensile theory thread Trans Trouton uniaxial stretching upper convected Maxwell velocity gradient Vinogradov viscoelastic zero