Multiphase Flow (MF)

The research objective of the Multiphase Flow Capability Group is to develop new algorithms and models to solve complex multiphase/interfacial flow dynamics for natural phenomena and industrial processes. These new modeling techniques enable us to investigate complex multiphase/interfacial flow physics. It also provides fundamental understanding and effective tools for other studies where multiphase flow is a common existence.

Our research foci are:

  • Multi-scale, multi-physics modeling
  • Bubble, droplet, particle & fluid flow
  • Mass/heat transfer & phase change
  • Contact and thin film dynamics
  • Microfluidics modeling
  • Surface effect & droplet substrate interaction
There are physical property discontinuities (density, viscosity, pressure) and complex topological changes associated with multiphase/interfacial flow phenomena. Very often, a structure such as membrane or capsule poses extra force on the flow system through immiscible interface where chemical, electrical, bio-reaction, and mass/thermal transfer also occur. The interface topology change and its associated instability also pose a challenge for physical understanding and numerical solution. In this study, we develop high performance computational tools dealing with the inherent numerical challenges to accurately simulate such multiphase/interfacial flow.

The multiphase flow group has developed a suite of in-house numerical codes using different modelling approaches for various applications, including Front Tracking method, Level-set method, Immersed Boundary method, Lattice Boltzmann method, and Boundary Integral method. These modeling tools can be applied to various flow regimes for wide applications from microfluidics, bubble column, boiling, to oil and gas transportation.

Figure 1: Particle suspension flow modeling.

Figure 2: Droplet splash dynamics.

Figure 3: Modeling of microfluidics (cell sorting and trapping as shown).

Figure 4: Modeling of bubbly flow.

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