Implicit multigrid computations of buoyant drops through sinusoidal constrictions


Muradoglu M., Gokaltun S.

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, vol.71, no.6, pp.857-865, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 71 Issue: 6
  • Publication Date: 2004
  • Doi Number: 10.1115/1.1795222
  • Title of Journal : JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
  • Page Numbers: pp.857-865

Abstract

Two-dimensional computations of dispersed multiphase flows involving complex geometries are presented. The numerical algorithm is based on the front-tracking method in which one set of governing equations is written for the whole computational domain and different phases are treated as a single fluid with variable material properties. The front-tracking methodology is combined with a newly developed finite volume solver based on dual time-stepping, diagonalized alternating direction implicit multigrid method. The method is first validated for a freely rising drop in a straight channel, and it is then used to compute a freely rising drop in various constricted channels. Interaction of two buoyancy-driven drops in a continuously constricted channel is also presented.