Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 217, Issue -, Pages 168-185Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2011.12.008
Keywords
Explicit time integration; Large time-steps; Incompressible fluid flows; Updated Lagrangian formulations; Real Time
Funding
- European Research Council [ERC-2009-AdG]
- CONICET
- Universidad Nacional del Litoral
- ANPCyT [PICT 1645 BID, CAI+D 65-333]
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An explicit time integrator without the CFL < 1 restriction for the momentum equation is presented. This allows stable large time-steps in problems dominated by convection, independently of the spatial discretization. The idea is to use the information existing at time t = t(n) in the velocity streamlines as well as in the acceleration streamlines to update the particle position as well as the velocity in an updated Lagrangian frame. The method may be used with moving or fixed meshes. (C) 2012 Elsevier B.V. All rights reserved.
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