TY - JOUR
T1 - A moving Lagrangian interface technique for flow computations over fixed meshes
AU - Cruchaga, Marcela
AU - Celentano, Diego
AU - Tezduyar, Tayfun
N1 - Funding Information:
The support provided by the Chilean Foundation for Research and Technology CONICYT (FONDECYT Projects No. 1980054 and 7980027) is gratefully acknowledged. The third author has been supported by the US Army, Army Research Laboratory, Army HPC Research Center. No official endorsement should be inferred.
PY - 2001/12/7
Y1 - 2001/12/7
N2 - In this paper, an enhanced finite element formulation for unsteady incompressible flows with moving interfaces is presented. The weak form of the Navier-Stokes equations, written using a generalized streamline operator technique, is coupled with the movement of the interface between two immiscible fluids defined through an independent moving mesh. The position of the interface is updated using a Lagrangian formulation. In this framework, a global mass conservation corrector algorithm and an enhanced element integration technique are proposed to improve accuracy. The method is applied to a number of test problems with moving interfaces.
AB - In this paper, an enhanced finite element formulation for unsteady incompressible flows with moving interfaces is presented. The weak form of the Navier-Stokes equations, written using a generalized streamline operator technique, is coupled with the movement of the interface between two immiscible fluids defined through an independent moving mesh. The position of the interface is updated using a Lagrangian formulation. In this framework, a global mass conservation corrector algorithm and an enhanced element integration technique are proposed to improve accuracy. The method is applied to a number of test problems with moving interfaces.
KW - Fixed mesh
KW - Incompressible flow
KW - Moving interface
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U2 - 10.1016/S0045-7825(01)00300-0
DO - 10.1016/S0045-7825(01)00300-0
M3 - Article
AN - SCOPUS:0035824596
SN - 0374-2830
VL - 191
SP - 525
EP - 543
JO - Computer Methods in Applied Mechanics and Engineering
JF - Computer Methods in Applied Mechanics and Engineering
IS - 6-7
ER -