Experimental studies of deformation and breakup of bubbles under strong turbulence

ORAL

Abstract

We have developed a vertical water tunnel facility to create turbulence with a strong energy dissipation rate. It allows us to investigate deformation and breakup of bubbles driven mostly by turbulence rather than by the buoyancy force. In this system, we simultaneously acquire the Lagrangian trajectories of bubbles with their reconstructed 3D shapes, as well as a high-concentration of tracer particles around these gas bubbles to calculate the surrounding flow field. Their spatio-temporal statistics enable us to study the couplings and the energy transfer between the two phases during deformation and breakup. The results may potentially help us to develop a better closure model for multiphase flow in a turbulent environment.

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Presenters

  • Ashik Ullah Mohammad Masuk

    Johns Hopkins University

Authors

  • Ashik Ullah Mohammad Masuk

    Johns Hopkins University

  • Ashwanth Salibindla

    Johns Hopkins University

  • Shiyong Tan

    Johns Hopkins University, Johns Hopkins University, Johns Hopkins University

  • Rui Ni

    Johns Hopkins University, Johns Hopkins University, Pennsylvania State Univ, Johns Hopkins University