Design of a cross-slot flow channel for extensional viscosity measurements

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Manuel A. Alves (Author) FEUP

Conference proceedings International

Title: XVTH INTERNATIONAL CONGRESS ON RHEOLOGY - THE SOCIETY OF RHEOLOGY 80TH ANNUAL MEETING, PTS 1 AND 2

Pages: 240-242

15th International Congress on Rheology/80th Annual Meeting of the Society-of-Rheology

Monterey, CA, AUG 03-08, 2008

Indexing

ISI Proceedings

ISI Web of Knowledge - 13 Citations

Scopus - 15 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-52N

DOI: 10.1063/1.2964648

Abstract (EN): In this work we present an algorithm for optimal shape design of viscoelastic fluid flow. A finite-volume viscoelastic code is coupled with the CONDOR optimizer [1] and an automated mesh generation and adaptation procedure, in order to find the shape of a given flow geometry, capable of achieving optimal performance. As an example of application we design an optimized cross-slot microfluidic chip appropriate for measuring the extensional viscosity of dilute polymeric solutions. The microfluidic cross-slot flow geometry is able to generate homogeneous elongational flow with regions of constant strain-rate, a requirement to produce meaningful rheological measurements.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3