Effects of confinement on bubble dynamics in a square duct Academic Article

abstract

• 2015 Elsevier Ltd. In this paper, we simulate the effects of confinement on three-dimensional bubble dynamics in a square duct. A systematic study of three confinement ratios, four Bond numbers and two Morton numbers has been conducted. A GPU implemented VOF numerical algorithm on a Cartesian collocated grid with an improved method to handle the surface tension force has been developed. A three-dimensional geometry construction method with a piecewise linear interpolation scheme for approximating the interface segments is used to compute the interface shape and liquid volume flux from the cell faces. The Navier-Stokes equations are solved with a space-time second-order accurate fractional step numerical scheme. The surface tension force is treated as a pressure gradient and an additional Poisson equation is solved. Transient and steady state bubble deformations, rise velocities and aspect ratios are presented.

authors

• Kumar, Panganamala

published proceedings

• International Journal of Multiphase Flow

author list (cited authors)

• Kumar, P., & Vanka, S. P.

citation count

• 19

complete list of authors

• Kumar, P||Vanka, SP

publication date

• December 2015

publisher

• Elsevier  Publisher

published in

• International Journal of Multiphase Flow  Journal

Digital Object Identifier (DOI)

• 10.1016/j.ijmultiphaseflow.2015.06.014

start page

• 32

end page

• 47

volume

• 77

URL

• http://dx.doi.org/10.1016/j.ijmultiphaseflow.2015.06.014