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Updated: Mar 16, 2026

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Droplet dynamics in rotating flows.

B Maneshian1, Kh Javadi2, M Taeibi Rahni3

  • 1Aerospace Research Institute (Ministry of Science, Research and Technology), Tehran, Iran; Aerospace Department, Sharif University of Technology, Azadi Ave., Tehran, Iran.

Advances in Colloid and Interface Science
|August 25, 2016
PubMed
Summary

This study investigates droplet dynamics in complex rotating flows using the Lattice Boltzmann Method. Droplet behavior, including deformation and trajectory, is significantly influenced by flow interactions, shear forces, and varying parameters.

Keywords:
Droplet dynamicsLattice Boltzmann MethodRotating flowTwo-phase flow

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Area of Science:

  • Fluid Dynamics
  • Computational Physics
  • Multiphase Flow

Background:

  • Previous droplet dynamics studies focused on simple unidirectional flows.
  • Rotating flows present complex vortex and shear dynamics not well-explored.
  • Understanding droplet behavior in rotating flows is crucial for various industrial applications.

Purpose of the Study:

  • To investigate droplet dynamics within a complex rotating flow field.
  • To analyze the influence of density ratios, droplet sizes, and initial positions on droplet behavior.
  • To understand the interaction between droplets and the complex flow physics.

Main Methods:

  • Lattice Boltzmann Method (LBM) for simulating two-phase unsteady flows.
  • Numerical simulation in a lid-driven cavity with Reynolds number (ReL) of 1000.
  • Systematic variation of density ratios, droplet sizes, and initial positions.

Main Results:

  • Demonstrated strong interactions between droplets and the complex carrying flow.
  • Observed droplet deformation (stretching, shrinking, rotating, dilatation) due to varying shear forces.
  • Analyzed droplet trajectories through acceleration/deceleration zones within the flow.

Conclusions:

  • Droplet dynamics in rotating flows are complex and highly dependent on flow-droplet interactions.
  • The Lattice Boltzmann Method is effective for simulating such intricate two-phase flow phenomena.
  • Parameter variations significantly alter droplet behavior and trajectory within the rotating cavity.