High-order discontinuous Galerkin solutions of internal low-Mach number turbulent flows

被引：2
|
作者：
Covello, V. [1 ]
Nigro, A. [1 ]
De Bartolo, C. [1 ]
Florio, G. [1 ]
机构：
[1] Univ Calabria, Dept Mech Energet & Management Engn, I-87036 Arcavacata Di Rende, CS, Italy
来源：
ATI 2013 - 68TH CONFERENCE OF THE ITALIAN THERMAL MACHINES ENGINEERING ASSOCIATION | 2014年 / 45卷
关键词：
Computational Fluid Dynamics; Discontinuous Galerkin finite element method; RANS equations; k - omega turbulence model; internal flows; abrupt expansion; COMPUTATION;
D O I：
10.1016/j.egypro.2014.01.057
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this work we apply the high-order Discontinuous Galerkin (DG) finite element method to internal low-Mach number turbulent flows. The method here presented is designed to improve the performance of the solution in the incompressible limit using an implicit scheme for the temporal integration of the compressible Reynolds Averaged Navier Stokes (RANS) equations. The performance of the scheme is demonstrated by solving a well-known test-case consisting of an abrupt axisymmetric expansion using various degrees of polynomial approximation. Computations with k-omega model are performed to assess the modelling capabilities, with high-order accurate DG discretizations of the RANS equations, in presence of non-equilibrium flow conditions. (C) 2013 The Authors. Published by Elsevier Ltd. access under CC BY-NC-ND license.
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页码：528 / 537
页数：10
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