| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 671678 | Journal of Non-Newtonian Fluid Mechanics | 2006 | 10 Pages |
Abstract
Predictive/fitting capabilities of the XPP, PTT–XPP and modified Leonov constitutive equations are compared in both steady as well as transient shear and uniaxial elongational flows using two, highly branched LDPE materials (Escorene LD165BW1 and Bralen RB0323). It has been found that even if all three tested models exhibit very good fitting capability for steady uniaxial extensional viscosity curve, their predicting capabilities may differ significantly for shear viscosity as well as first and second normal stress coefficients.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Radek Pivokonsky, Martin Zatloukal, Petr Filip,