Bubbly and Buoyant Particle-Laden Turbulent Flows

Varghese Mathai, Detlef Lohse, Chao Sun*

*Corresponding author for this work

Research output: Contribution to journalReview articleAcademicpeer-review

12 Citations (Scopus)

Abstract

Fluid turbulence is commonly associated with stronger drag, greater heat transfer, and more efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid flows contain suspensions of dispersed bubbles and light particles. Recently, much attention has been devoted to understanding the behavior and underlying physics of such flows by use of both experiments and high-resolution direct numerical simulations. This review summarizes our present understanding of various phenomenological aspects of bubbly and buoyant particle-laden turbulent flows. We begin by discussing different dynamical regimes, including those of crossing trajectories and wake-induced oscillations of rising particles, and regimes in which bubbles and particles preferentially accumulate near walls or within vortical structures. We then address how certain paradigmatic turbulent flows, such as homogeneous isotropic turbulence, channel flow, Taylor-Couette turbulence, and thermally driven turbulence, are modified by the presence of these dispersed bubbles and buoyant particles. We end with a list of summary points and future research questions.

Original languageEnglish
Pages (from-to)529-559
Number of pages31
JournalAnnual Review of Condensed Matter Physics
Volume11
DOIs
Publication statusPublished - 10 Mar 2020

Keywords

  • Bubble-induced turbulence
  • Bubbles
  • Buoyant particles
  • Lagrangian dynamics
  • Two-way coupling
  • Wake-turbulence interaction

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