Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
August 20, 2026Journal of Rheology

Experimental study of enhanced flow asymmetry due to viscoelasticity: An assessment of viscoelastic constitutive models

View Full Paper
Ask AI
Bookmark
Share

Authors

VCVivaswan ChandraShekarGMGuillaume MaîtrejeanDBDidier Blésès

Discussion

Loading...

Member takes

Overview

Experimental investigation demonstrates enhanced flow asymmetry at Weissenberg numbers above unity in shear-thinning viscoelastic fluids, highlighting limitations of standard constitutive models.

Key Points

  • Investigate flow asymmetry enhancement in shear-thinning viscoelastic fluids past an asymmetrically confined cylinder and evaluate the predictive capability of four viscoelastic constitutive models.
  • Conducted flow experiments using shear-thinning viscoelastic polymer solutions past an asymmetrically confined cylinder across varying Weissenberg numbers (Wi).
  • Evaluated four constitutive models incorporating shear-thinning (White–Metzner, Giesekus, FENE-P, and exponential PTT) by comparing theoretical predictions against experimental flow data.
  • Observed significant enhancement of geometric flow asymmetry at Wi > 1, with flow through the nonpreferred pathway decreasing substantially even under minor geometric asymmetry.
  • Identified that White–Metzner and Giesekus models reasonably capture enhanced asymmetry but deviate at higher geometric asymmetries, whereas FENE-P and exponential PTT models fail under constrained extensibility parameters.

Cite This Study

ChandraShekar et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5318a91293e6a1cc840https://doi.org/10.1122/8.0001123
View Full Paper
Ask AI
Bookmark
Share