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Resolving time-dependent waves

Número da Solução: 1118 Aplica-se a: Acoustics Module, COMSOL Multiphysics, MEMS Module, RF Module, Structural Mechanics Module, Wave Optics Module Versões: Todas as versões

I am solving a time-dependent wave-type problem, what mesh and solver settings should I adjust for better accuracy and runtimes? The accuracy of a time-dependent model solving for electromagnetic, acoustic, ...


Setup and Meshing of Infinite Elements, Perfectly Matched Layers, and Absorbing Layers

Número da Solução: 1272 Versões: Todas as versões

I am setting up a model where I want to include a region of infinite extent. How should such situations be modeled and meshed? #Overview There are three options for modeling a domain that is meant to represent a ...


Understanding, and changing, the element order

Número da Solução: 1270 Versões: Todas as versões

What is the meaning of element order, or discretization, and how do I change it? What affect does it have on the mesh and the solution? Why does the mesh look like it has straight sides even with higher-order ...


Performing a Mesh Refinement Study

Número da Solução: 1261 Versões: Todas as versões

How do I gain confidence in the accuracy of the solution to my problem? How do I perform a mesh refinement study? All of the numerical methods used within COMSOL Multiphysics® discretize the modeling space via a Mesh ...


The usage of Form Union and Form Assembly

Número da Solução: 1216 Versões: Todas as versões

There is an option to Form Union or Form Assembly at the end of the Geometry sequence. What does this mean and when should I switch between them? The Geometry branch within the Model Builder consists of a sequence of ...


Manually setup the geometric multigrid solver

Número da Solução: 1213 Versões: Todas as versões

The geometric multigrid solver accelerates the convergence of the iterative solver by solving the finite element problem on a series of meshes rather than a single one. The multigrid algorithm starts with the initial ...


Failed to respect edge element on geometry edge

Número da Solução: 1207 Aplica-se a: COMSOL Multiphysics Versões: Todas as versões

The error "Failed to respect edge element on geometry edge" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator ...


Failed to respect boundary element on geometry face

Número da Solução: 1208 Aplica-se a: COMSOL Multiphysics Versões: Todas as versões

The error "Failed to respect boundary element on geometry face" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator ...


Failed to create boundary layer mesh for domains

Número da Solução: 1210 Aplica-se a: COMSOL Multiphysics Versões: Todas as versões

The error "Failed to create boundary layer mesh for domains" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator was ...


Failed to create boundary layer mesh

Número da Solução: 1209 Aplica-se a: COMSOL Multiphysics Versões: Todas as versões

The error "Failed to create boundary layer mesh" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator was not able to ...


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