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FIC-FEM formulation for the multidimensional transient advection-diffusion-absorption equation

机译:多维瞬态平流散游吸收方程的FIC-FEM制剂

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In this paper we present a stabilized FIC-FEM formulation for the multidimensional transient advection-diffusion-absorption equation. The starting point is the non-local form of the governing equations for the multidimensional transient advection-diffusion-absorption problems obtained via the Finite Increment Calculus (FIC) procedure. The FIC governing equations have a residual form that introduces a characteristic length vector that depends on streamline, absorption and shock capturing stabilization parameters, as well as on a characteristic element size that ensures a stabilized numerical solution using a standard Galerkin FEM. The value of the stabilization parameters is obtained as an extension of the steady-state form. The accuracy of the FIC-FEM formulation is verified in the solution of several transient advection-diffusion-absorption problems using regular meshes of 3-noded triangles and 4-noded quadrilaterals. (C) 2020 Elsevier B.V. All rights reserved.
机译:本文介绍了多维瞬态贯穿型扩散吸收方程的稳定的FIC-FEM配方。起始点是通过有限增量微积分(FIC)程序获得的多维瞬态瞬时平流扩散吸收问题的控制方程的非局部形式。 FIC控制方程具有剩余形式,其引入特征长度载体,其取决于流线,吸收和冲击捕获稳定参数,以及使用标准Galerkin FEM确保稳定的数值溶液的特征元素尺寸。获得稳定参数的值作为稳态形式的延伸。使用3-点点编码三角形和4磅的四边形的常规网格来验证FIC-FEM配方的准确性。 (c)2020 Elsevier B.v.保留所有权利。

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