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Area of Science:

  • Fluid dynamics
  • Soft matter physics
  • Granular materials science

Background:

  • Turbulent flows are ubiquitous in nature and engineering.
  • Understanding particle behavior in complex fluid dynamics is crucial.
  • Soft granular particles exhibit unique responses to external forces.

Purpose of the Study:

  • To investigate the impact of two-dimensional turbulent flow on soft granular particles.
  • To identify the conditions leading to the formation of ordered phases in granular systems.
  • To analyze the role of Stokesian drag and interparticle forces in phase transitions.

Main Methods:

  • Simulating a two-dimensional, incompressible, turbulent flow.
  • Employing soft granular particles with short-range repulsive potentials.
  • Quantifying particle ordering using bond order parameters and local density fluctuations.
  • Analyzing particle clustering via correlation dimension.

Main Results:

  • Emergence of a crystalline phase in soft granular particles under turbulent flow.
  • A sharp phase transition observed as a function of the Stokes number.
  • Preferential concentration characteristics differ from particle-laden flows lacking repulsive potentials.

Conclusions:

  • Turbulent flow can induce crystalline ordering in soft granular matter.
  • The Stokes number is a critical parameter governing the crystalline-noncrystalline transition.
  • Repulsive interparticle potentials significantly alter preferential concentration patterns in turbulent flows.