Much faster processing of models that include many identical boundaries on a complex geometry and use periodic conditions, identical mesh, or boundary similarity couplings, particularly if used in combination with mesh control entities.2 When using an external SQL Server database with a Model Manager...
comsol模拟步骤之在圆柱体上的涡电流 Solved with COMSOL Multiphysics 4.2a ©2011 C O M S O L 1 | E D D Y C U R R E N T S I N A C Y L I N D E R Eddy Currents in a Cylinder Introduction To help you understand how to create models using the AC/DC Module, ...
fixed temperature boundary condition on a boundary, you first create a TemperatureBoundary feature using the following syntax: model.physics("ht").create("temp1", "TemperatureBoundary", 1); The first input argument to create is a feature tag that is used as a handle to this boundary condition...
When comparing the BEM and FEM results to the analytical model for different mesh sizes (see graph below), we see that on one hand, the boundary element method produces accurate results for coarse meshes. The finite element method, on the other hand, requires much finer meshes on the po...
whereuttis the structural acceleration,nis the surface normal,ptis the total acoustic pressure,qdis the acoustic dipole domain source (if applicable), andFAis the load (force per unit area) experienced by the structure. TheAcoustic-Structure Boundarycoupling can be used to couple a pressure ...
4 Select Boundary 3 only. Variables 1 1 On the Definitions toolbar, click Local Variables. 2 In the Settings window for Variables, locate the Variables section. 3 In the table, enter the following settings: Name Expression Unit Description F_ac aveop_ac(truss.Nxl) N Axial force, member ...
These models include any case where nonlinear terms arise in the governing equations, such as within the Navier–Stokes equations, or whenever materials properties, loads, or boundary conditions are functions of the solution. The solution to such cases is found by repeatedly solving a linearized pro...
there are some small differences in the boundary conditions. There are so-calledLumped Portand Lumped Element boundary conditions, applicable for microwave device modeling, which are solely part of the RF Module. Also keep in mind that only the Wave Optics Module contains the beam envelopes formula...
applicable selection lists (in physics and materials settings, for example), choose an option from theShow in physics(Show in instancesif in a geometry part;Show in 3Din a plane geometry under a work plane in a 3D component) list:All levels,Domain selection,Boundary selection,Edge selection,...
In COMSOL Multiphysics®, micromechanics-based homogenization is performed using theCell Periodicitynode in theSolid Mechanicsinterface. It has two different boundary conditions,PeriodicandHomogeneous. ThePeriodicboundary condition is applicable to the periodic materials and needs an RUC material subvolume. ...