A Lagrangian finite element method for 3D compressible flow applications

被引：12
|
作者：
Cremonesi, Massimiliano [1 ]
Frangi, Attilio [1 ]
机构：
[1] Politecn Milan, Dept Civil & Environm Engn, I-20133 Milan, Italy
来源：
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2016年 / 311卷
关键词：
Compressible flow; Lagrangian methods; Finite elements; ESSENTIALLY NONOSCILLATORY SCHEMES; FLUID-STRUCTURE INTERACTION; SHOCK HYDRODYNAMICS; UNDERWATER IMPLOSION; UNSTRUCTURED GRIDS; ALE HYDRODYNAMICS; FRAMEWORK; CONSERVATION; SIMULATION; MESHES;
D O I：
10.1016/j.cma.2016.08.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We discuss a Lagrangian approach for the simulation of 3D compressible flows on non-structured tetrahedral meshes. The formulation is nodal-based, in the sense that kinematic and thermodynamic variables are all interpolated with continuous P1 polynomials. The equations are solved with an explicit time-marching scheme without stabilizing terms and with the inclusion only of a shock-capturing viscosity. Several examples featuring shock propagations and mixing of fluids are addressed, with particular emphasis on the stability of the approach and on possible strategies for mesh update. (C) 2016 Elsevier B.V. All rights reserved.
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页码：374 / 392
页数：19
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