A FIC-based stabilized finite element formulation for turbulent flows

被引：8

作者：

Cotela-Dalmau, Jordi ^{[1
]}

Rossi, Riccardo

Onate, Eugenio

机构：

[1] CIMNE, Campus Nord UPC,C Gran Capita Sn, Barcelona 08034, Spain

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2017年 / 315卷

关键词：

Finite Increment Calculus; Turbulence modeling; Stabilized finite elements; LARGE-EDDY SIMULATION; COMPUTATIONAL FLUID-DYNAMICS; DIRECT NUMERICAL-SIMULATION; INCOMPRESSIBLE FLOWS; CIRCULAR-CYLINDER; SCALE MODELS; CALCULUS; APPROXIMATION; DISSIPATION;

D O I：

10.1016/j.cma.2016.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a new stabilized finite element (FEM) formulation for incompressible flows based on the Finite Increment Calculus (FIC) framework (Orate, 1998). In comparison to existing FIC approaches for fluids, this formulation involves a new term in the momentum equation, which introduces non-isotropic dissipation in the direction of velocity gradients. We also follow a new approach to the derivation of the stabilized mass equation, inspired by recent developments for quasi-incompressible flows Pilate et al., 2014). The presented FIC-FEM formulation is used to simulate turbulent flows, using the dissipation introduced by the method to account for turbulent dissipation in the style of implicit large eddy simulation. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：607 / 631

页数：25

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