Experimental evidence for an intrinsic route to polymer melt fracture phenomena: A nonlinear instability of viscoelastic Poiseuille flow

被引：51

作者：

Bertola, V

Meulenbroek, B

Wagner, C

Storm, C

Morozov, A

van Saarloos, W

Bonn, D

机构：

[1] Ecole Normale Super, Lab Phys Stat, F-75005 Paris, France

[2] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.90.114502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The production rate of polymer fibers by extrusion is usually limited by the appearance of a series of instabilities ("melt fracture") that lead to unwanted undulations of the surface. We present both qualitative and quantitative experimental evidence that-in addition to previously known polymer-specific scenarios-there is an intrinsic route towards melt fracture type phenomena: a nonlinear ("subcritical") instability of viscoelastic Poiseuille flow.

引用

页数：4

共 20 条

[1] Non-linear temporal stability analysis of viscoelastic plane channel flows using a fully-spectral method [J].