期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 199, 期 13-16, 页码 828-840出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2009.06.019
关键词
Variational multiscale methods; Stabilized methods; Advection-diffusion equation; Element-vector-based tau; Incompressible Navier-Stokes equations; Turbulence modeling; Turbulent channel flow
资金
- Teragrid [MCAD7S032]
The objective of this paper is to show that use of the element-vector-based definition of stabilization parameters, introduced in [T.E. Tezduyar, Computation of moving boundaries and interfaces and stabilization parameters, Int. J. Numer. Methods Fluids 43 (2003) 555-575: T.E. Tezduyar, Y. Osawa, Finite element stabilization parameters computed from element matrices and vectors, Comput. Methods Appl. Mech. Engrg. 190 (2000) 411-430], circumvents the well-known instability associated with conventional stabilized formulations at small time steps. We describe formulations for linear advection-diffusion and incompressible Navier-Stokes equations and test them on three benchmark problems: advection of an L-shaped discontinuity, laminar flow in a square domain at low Reynolds number, and turbulent channel flow at friction-velocity Reynolds number of 395. (C) 2009 Elsevier B.V. All rights reserved.
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