Popiolek, Tales LuizAwruch, Armando MiguelTeixeira, Paulo Roberto de Freitas2015-06-192015-06-192006POPIOLEK, Tales Luiz; AWRUCH, Armando Miguel; TEIXEIRA, Paulo Roberto de Freitas. Finite element analysis of laminar and turbulent flows using LES and subgrid-scale models. Applied Mathematical Modelling, v. 30, n. 2, p.177-199, 2006. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0307904X05000648>. Acesso em: 18 jun. 2015.0307-904Xhttp://repositorio.furg.br/handle/1/5049Numerical simulations of laminar and turbulent flows in a lid driven cavity and over a backward-facing step are presented in this work. The main objectives of this research are to know more about the structure of turbulent flows, to identify their three-dimensional characteristic and to study physical effects due to heat transfer. The filtered Navier–Stokes equations are used to simulate large scales, however they are supplemented by subgrid-scale (SGS) models to simulate the energy transfer from large scales toward subgridscales, where this energy will be dissipated by molecular viscosity. Two SGS models are applied: the classical Smagorinsky s model and the Dynamic model for large eddy simulation (LES). Both models are implemented in a three-dimensional finite element code using linear tetrahedral elements. Qualitative and quantitative aspects of two and three-dimensional flows in a lid-driven cavity and over a backward-facing step, using LES, are analyzed comparing numerical and experimental results obtained by other authors.engopen accessLaminar and turbulent flowsLarge eddy simulationFinite elementsSubgrid-scale modelarticle10.1016/j.apm.2005.03.019