Plane sudden expansion flows of viscoelastic liquids

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Poole, RJ (Author) Other; Alves, MA (Author) FEUP; Oliveira, PJ (Author) Other; Pinho, FT (Author) Other

Journal

Title: Journal of Non-Newtonian Fluid Mechanics

Vol. 146

Pages: 79-91

ISSN: 0377-0257

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 27 Citations

ISI Web of Science

Scopus - 33 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-004-6QX

DOI: 10.1016/j.jnnfm.2006.11.001

Abstract (EN): We report a systematic numerical investigation of the creeping flow of three different viscoelastic models, the UCM, Oldroyd-B and the linear form of the PTT model, through a 1:3 planar sudden expansion. Although the effect of elasticity is to reduce both the length and intensity of the recirculation region downstream of the expansion, we show that this reduction is much lower than previous studies have suggested and that, at high Deborah number, a significant region of recirculation still exists for all of the models studied.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13