Pressure Tap Influence on the Flow of Viscoelastic Fluids in a Microfluidic Channel

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2020-08-21

Autores

Laura Campo-Deaño (Autor) FEUP; Francisco J. Galindo-Rosales (Autor) FEUP; Tomás Rodrigues (Autor) FEUP

Ata de Conferência Internacional

Título: PROCEEDINGS OF THE IBERIAN MEETING ON RHEOLOGY (IBEREO 2019)

Páginas: 177-180

7th Iberian Meeting on Rheology (IBEREO) of the Spanish-Group-of-Rheology (GER) and Portuguese-Society-of-Rheology (SPR)

Univ Porto, Porto, PORTUGAL, SEP 04-06, 2019

Indexação

ISI Web of Knowledge - 1 Citação

Outras Informações

ID Authenticus: P-00T-YG8

DOI: 10.1007/978-3-030-27701-7_36

Abstract (EN): How does flow inside a microfluidic device behave when passing by a pressure tap? Will its natural state be disrupted by any means? We seek to answer these questions and assess the consequences (if any) of attaching pressure taps to microchannels. To do so, streakline photography was performed for flow patterns visualisation in the close proximity of different types of pressure taps, using `long' exposure times. Both a Newtonian and a viscoelastic fluid were tested, in order to observe the interplay of inertio-elastic effects near the intake of the pressure taps. The microdevices were made out of PDMS and the main flow channel, to which the pressure taps were attached, had a cross-section of 270x100 mu m. Elastic effects were observed in the form of reduced streak-line curvature near the taps intake and increased vortex formation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4