Meshing faces - A beginner's question
Hi everyone, apologies if this may seem trivial but I've been struggling to create a separate mesh for separate faces in my model.The geometry is a simple I-beam of length 4m but thicknesses of 6.7mm...
View ArticleMoving mesh vs convergence
Hi I simulate heat transfer in a cylinder with a moving boundary and a constant external source. The velocity of the boundary is a function of the local temperature and the coordinates (x, y). With a...
View Articlemeaning of swept mesh distribution
Hi All. I created a rectangular layer where I wanted finer layers at the edges. I used a swept mesh with a distribution that used a symmetric arithmetic sequence with 10 layers and an element ratio of...
View ArticleSmoothing Fillet
Hi,I added a fillet to the corner of a rectangle but it is still being recognized as having a point while meshing and computing the electric field. Is there a way to remove whatever point it is picking...
View ArticleExporting Shell Data on mesh nodes coordinates through Matlab LiveLink
Hi, I'm trying to export comsol data from a parametric eigenfrequency study of a shell aluminium basic plate. I need to obtain data centered exactly on the nodes from the mesh used to compute results....
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Identity Boundary Pair with Moving Mesh
I have two surfaces that are matched on two different bodies. I want to maintain that the two meshes are different size and I don't want to match them like shown below. Body 2 (courser mesh) is going...
View ArticleCoupling capacitance between inductor and coplanar waveguide
Good day! For the past few days I've started using COMSOL to do some simple (?) electrostatics calculations in a system of a meander inductor coupled to a (piece of) coplanar waveguide. All of them...
View ArticleChange location of Comsols virtual memory (out-of-core file)
Dear community,I am currently trying to compare different mesh qualities and how the mesh affects the solution of the problem. So the point I am stuck right now is the finest mesh: The study with the...
View ArticleControl the size of the output mesh after Automatic Remeshing occurs
Hello all!I am having troubles with a "Laminar Two-Phase Flow, Moving Mesh" model: the mesh elements are becoming very distorted and eventually the simulation crashes. Therefore, I have added the...
View ArticleComsol 3.5a ERROR 9040 when I mesh or solve
I was using comsol 3.5a in win10, and thesedays when I started to mesh even a 2d rectangle, it was told me that it has a ERROR 9040. Do anyone knows how to solve this kind of problem? Exception:...
View ArticleSelection of live elements to set new boundary condition
Hi I am working on laser cutting process. I know that we can able to kill the element by dropping young’s modulus (close to zero) method using comsol. However, I would like to kill the elements...
View ArticleHow to solve convergence plot in Multiphysics ?
Hi,I want to make a thermo-mechanic analysis using Multiphysics. Study type is stationary. But when I compute, convergence plot is included in only two small dots. There is no plot. How can I solve...
View ArticleRight Mesh for surrounding space of metal sheet, to check skin-depth effect...
Hello, (My problem .mph file is attached) I'm using AC/DC Module>Magnetic Fields, to simulate the problem, where I have metal sheet (e.g. aluminum) placed underneath a source of magnetic field...
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Optimization by moving mesh
Hello every body, How can I take the mesh nodes as design variables?? I am trying to build a simple device that consists of a permanent magnet and an iron piece located on the top. I want to change and...
View ArticleExporting data on mesh nodes
Hi, I need to export mechanical vibration eigenfrequency data which could lie exactly on the mesh nodes coordinates. Although I am able to export quite similar coordinates, there is always a mismatch...
View ArticleUndefined variable. - Variable: comp1.Ne
Dear Colleagues, I want to simulate a 3D MOSFET using semiconductor module. But, I am getting this error in the source domain:Undefined variable.Variable: comp1.NeGeometry: geom1Boundaries: 23,...
View ArticleMeshing Error
Hi,I'm trying to run a 3D fluid simulation. When the geometery is simple, everything runs fine. As soon as I add an angled rectange, it gives me the following error: Failed to create boundry layer...
View ArticleAutomatic mesh refinement with Infinite Element Domain?
Hello, when 'Physics controlleld mesh' is enabled in the Magnetic field module, the Infinite element domain is meshed with swept elements. Adaptive mesh refinement is not possible with swept elements,...
View ArticleMeshing for very thin conductors
I am attempting to mesh a simulation of a very thin conductor (0.1 um) with lateral dimensions in the range of 100's of um (for stationary COMSOL AC/DC magnetic and electric fields simulation).Whenever...
View ArticleLaminar flow and Heat transfer
Hello guys!I am facing a problem with Laminar flow and Heat Transfer in Fluids modules. I have found some examples regarding these modules, where in the boundary conditions of the Laminar Flow the...
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