Paper Number
GI2                         My Program 

Session
Gallery of Rheology - Images

Title
Resuspension tree: Shaped by flow and gravity

Presentation Date and Time
October 22, 2025 (Wednesday) 6:30

Track / Room
Gallery of Rheology Session: Images / Sweeney Ballroom E+F

Authors (Click on name to view author profile)

  1. Mahmoudian, Mohammadreza (University of Illinois at Chicago, Mechanical engineering)
  2. Rogers, Simon A. (University of Illinois Urbana-Champaign, Chemical and Biomolecular Engineering)
  3. Mirbod, Parisa (University of Illinois at Chicago, Mechanical engineering)

Author and Affiliation Lines (in printed abstract book)
Mohammadreza Mahmoudian1, Simon A. Rogers2 and Parisa Mirbod1
1Mechanical engineering, University of Illinois at Chicago, Chicago, IL 60607; 2Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801

Speaker / Presenter 
Mahmoudian, Mohammadreza

Keywords
experimental methods; particualte systems; suspensions

Text of Abstract
This image reveals a tree-like pattern formed during the resuspension of particles under oscillatory shear flow. As the dense suspension is sheared, particles begin to detach from the sedimented bed and rise to interact with the upper plate. When the shear stops, gravity drives some particles to resettle, while others remain adhered to the plate’s surface. These adhered particles, shaped by the transient flow structures during the resuspension process, leave behind a striking branching pattern resembling a tree. This visual captures the moment when flow, adhesion, and sedimentation dynamics intersect, offering a unique window into the interplay between shear forces and particle behavior in dense suspensions.