Foam Dynamics:

  • Dry foam dynamics involves the interaction between a gas and a collection of thin liquid-film internal boundaries that partition the gas into discrete cells or bubbles. The liquid film boundaries are flexible, contract under the influence of surface tension, and are permeable to the gas, which moves across them by diffusion at a rate proportional to the local pressure difference across the boundary. We introduce an immersed boundary method that takes into account permeable films (boundaries).

  • 2D foam (200 cells) with topological changes(movie)

    Boundary with fluid markers

    Pressure contours

  • 3D general foam with 40 cells(movie)

  • Papers in Preparation:
    - Numerical simulations of two-dimensional foam by the immersed boundary method.(.pdf)
    JCP, 2010 (with C.Peskin and M.Lai)
    - The immersed boundarymethod for two-dimensional foam with topological changes. (.pdf)
    submitted to CiCP(with C.Peskin, M.Lai, and Y.Seol)
    - Numerical simulations of three-dimensional foam by the immersed boundary method..(.pdf) in preparation.