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RIPPLE is a model for transient, two-dimensional flows of incompressible fluids with surface tension on free surfaces of general shape. Such flows include ink-jet printers, application of industrial surfactants, casting and mold-filling applications, and dynamics of drops and bubbles. Surface tension is modeled as a volume force derived from the continuum-surface-force model, which gives RIPPLE both robustness and accuracy in modeling surface tension effects at the free surface as well as wall-adhesion effects.


RIPPLE Features

  • Finite difference discretization on an Eulerian, rectilinear mesh in Cartesian or cylindrical geometry.
  • Free surfaces are modeled as volume-of-fluid (VOF) data on the mesh.
  • A two-step projection method is used to solve for the incompressible flow.
  • Pressure Poisson equation is solved via a robust incomplete Cholesky conjugate gradient technique.
  • Flow obstacles and curved interior boundaries are representable with a partial-cell treatment.


RIPPLE Documentation


RIPPLE Source Code Availability and Installation


Users of RIPPLE and the CSF Model for Surface Tension

For more information about RIPPLE, contact Jeremaih Brackbill at jub@lanl.gov.






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