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June 3, 2026Journal of Fluid MechanicsOpen Access

Elastoviscoplastic rheology suppresses drag growth in particle suspensions

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Authors

SHShahriar HabibiPCPedro CostaLBLuca Brandt

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Overview

Randomized trial examines drag reduction in elastoviscoplastic suspensions, suggesting enhanced efficiency.

Key Points

  • The aim is to investigate how elastoviscoplastic rheology influences drag in particle suspensions under various conditions.
  • Conducted direct numerical simulations of elastoviscoplastic duct flows at particle volume fractions up to 15%.
  • Analyzed drag growth in relation to particle loading and Bingham number across dilute and semi-dilute conditions.
  • Examined the effects of viscoelasticity and unyielded plug phenomena on particle positioning and stress contribution.
  • Elastoviscoplastic suspensions show modest drag growth compared to Newtonian suspensions, especially at higher particle loadings.
  • Achieved significant drag reduction beyond a threshold particle volume fraction determined by the Bingham number.
  • Observed shear thinning behavior in viscoelastic and elastoviscoplastic suspensions, contradicting earlier predictions.

Cite This Study

Habibi et al. (2026) studied this question.

synapsesocial.com/papers/6a1fc5b7dee9eb8c0dce70dbhttps://doi.org/10.1017/jfm.2026.11621
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