Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 195, Issue 44-47, Pages 5857-5876Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2005.08.016
Keywords
subgrid stabilization; projection methods; incompressibility; Navier-Stokes equations; finite elements; 2D flows at high Reynolds numbers
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A subgrid stabilization technique is developed for solving the two-dimensional incompressible Navier-Stokes equations at high Reynolds numbers. The time marching algorithm is based on a well-established fractional-step pressure-correction projection method. The advection-diffusion step is enriched by an implicit subgrid stabilizing term and by an explicit dissipative shock capturing term. The former is calculated by means of a hierarchical finite element setting, the latter is included to avoid Gibbs' phenomenon in the boundary layer. Convergence tests on prototypical two-dimensional examples are reported and the method is used to simulate the viscous incompressible flows around the airfoil NACA0012 at zero incidence and Reynolds numbers ranging from 10(5) to 10(6). (c) 2005 Elsevier B.V. All rights reserved.
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