Electrospray cone-jet mode for weakly viscoelastic liquids

S. Blanco-Trejo, M. A. Herrada, A. M. Gañán-Calvo, and José M. Montanero
Phys. Rev. E 100, 043114 – Published 28 October 2019

Abstract

We study theoretically the influence of viscoelasticity on the steady cone-jet mode of electrospray for small stress relaxation times. For this purpose, we numerically integrate the leaky-dielectric model together with the Oldroyd-B constitutive relationship and calculate both the base flow and linear eigenmodes characterizing its stability as a function of the governing parameters. We describe the effect of the polymeric stresses on both the cone-jet mode and the minimum flow rate stability limit. There are considerable differences between the Newtonian and viscoelastic electrospray realizations even for relatively small stress relaxation times due to the intense extensional deformation suffered by the fluid particles in the cone-jet transition region The axial polymeric stress shrinks the liquid meniscus and stabilizes it by pushing the fluid particle in the cone-to-jet transition region.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 29 May 2019

DOI:https://doi.org/10.1103/PhysRevE.100.043114

©2019 American Physical Society

Physics Subject Headings (PhySH)

Polymers & Soft MatterFluid Dynamics

Authors & Affiliations

S. Blanco-Trejo, M. A. Herrada, and A. M. Gañán-Calvo

  • Escuela Técnica Superior de Ingenieros, Universidad de Sevilla, Avda. de los Descubrimientos s/n, E-41092-Sevilla, Spain

José M. Montanero

  • Departmento de Ingeniería Mecánica, Energética y de los Materiales and Instituto de Computación Científica Avanzada (ICCAEx), Universidad de Extremadura, Avda. de Elvas s/n, E-06071 Badajoz, Spain

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 100, Iss. 4 — October 2019

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×