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reduction of numerical diffusion in three-dimensional vortical flows using a coupled eulerian/lagrangian solution procedureA new approach based on the coupling of an Eulerian and a Lagrangian solver, aimed at reducing the numerical diffusion errors of standard Eulerian time-marching finite-volume solvers, is presented. The approach is applied to the computation of the secondary flow in two bent pipes and the flow around a 3D wing. Using convective point markers the Lagrangian approach provides a correction of the basic Eulerian solution. The Eulerian flow in turn integrates in time the Lagrangian state-vector. A comparison of coarse and fine grid Eulerian solutions makes it possible to identify numerical diffusion. It is shown that the Eulerian/Lagrangian approach is an effective method for reducing numerical diffusion errors.
Document ID
19930064132
Document Type
Conference Paper
Authors
Felici, Helene M.
(Swiss Federal Inst. of Technology Zurich, Switzerland)
Drela, Mark
(MIT Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
AIAA PAPER 93-2928
Meeting Information
AIAA, Fluid Dynamics Conference(Orlando, FL)
Distribution Limits
Public
Copyright
Other