Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS Int. J. Numer. Meth. Fluids 2010; 00:10 Prepared using fldauth.cls [Version: 2002/09/18 v1.01]
 

Summary: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
Int. J. Numer. Meth. Fluids 2010; 00:10 Prepared using fldauth.cls [Version: 2002/09/18 v1.01]
A Numerical Scheme for Euler-Lagrange Simulation of Bubbly
Flows in Complex Systems
E. Shams, J. Finn and S. V. Apte
School of Mechanical Industrial and Manufacturing Engineering, Oregon State University, Corvallis,
OR, 97331, USA.
SUMMARY
An Eulerian-Lagrangian approach is developed for the simulation of turbulent bubbly flows in
complex systems. The liquid phase is treated as a continuum and the Navier-Stokes equations are
solved in an unstructured grid, finite volume framework for turbulent flows. The dynamics of the
disperse phase is modeled in a Lagrangian frame and includes models for motion of each individual
bubble, bubble size variations due to the local pressure changes, and interactions among the bubbles
and with boundaries. The bubble growth/collapse is modeled by the Rayleigh-Plesset (RP) equation.
Three modeling approaches are considered: (a) one-way coupling; where the influence of the bubble on
the fluid flow is neglected, (b) two-way coupling; where the momentum exchange between the fluid and
the bubbles is modeled, and (c) volumetric coupling; where the volumetric displacement of the fluid by
the bubble motion and the momentum-exchange are modeled. A novel adaptive time-stepping scheme
based on stability analysis of the non-linear bubble dynamics equations is developed. The numerical
approach is verified for various single bubble test cases to show second-order accuracy. Interactions

  

Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University

 

Collections: Engineering