Viscoelastic transition in transonic flow focusing

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Rubio, A (Autor) Outra; Galindo Rosales, FJ (Autor) FEUP; Vega, EJ (Autor) Outra; Montanero, JM (Autor) Outra; Cabezas, MG (Autor) Outra

Revista

Título: Physical Review Fluids

Vol. 7

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 0 Citações

Scopus

Outras Informações

ID Authenticus: P-00W-WQH

DOI: 10.1103/physrevfluids.7.074201

Abstract (EN): We find and study the viscoelastic transition in transonic flow focusing when polymers of low molecular weights are dissolved in water at the appropriate concentration. This phenomenon is explained in terms of the coil-stretch transition of the polymers crossing the tapering meniscus, where the airstream produces very large strain rates. The resulting elastic stress stabilizes the flow, reducing the minimum liquid flow rate leading to jetting. As a consequence, we produce jets much thinner and longer than their Newtonian counterparts, which has important consequences at the technological level. We present a scaling analysis to show the role played by the polymer relaxation time and extensional viscosity in the viscoelastic transition.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14