Error: Meshes not compatible
Hi all, I'm running a mass transport simulation that involves first a laminar flow study, then using the results for a transport of diluted species study. I have had some issues with meshing my 3D STL...
View ArticleMoving mesh.
I don't know how to put some conditions in the moving mesh when I set up surface wave. I found an example file whose named 'Sloshing tank' through comsol model library. It is pretty similar with what...
View ArticleElectrostatics module doesnt work
Hello , I am trying to simulate Sharland et al's paper with 6 species corrosion process. After long weeks of attempts I have used constraints to enforce equilibrium constraints. Please find the...
View ArticleNo electrostatics force in the assembly geometry mode?
Hi, I use COMSOL to model a MEMS capacitor, whose top plate will deflect to the bottom plate due to the electromechanics force. The model works well in union mode with the physics of ES+SOLID+ALE. Then...
View ArticleHow to extract the nodes number from a up and down interior boundary or at...
Hi everybody, How to extract the nodes number from a up and down interior boundary or the outside boundary shown in the attachment.jpg? thanks in advance! Tianya
View ArticleHow to scale the mesh to the geometry size
Hi, I have a quick question: if you mesh a 2D square geometry of size 'L' with a mapped mesh and a total of 'x' domain elements, what would be an appropriate scaling criteria for the mesh if I was to...
View ArticleMeshing copper on a PCB
Hi In the RF module I'm trying to do a simulation for a pcb with metal thickness of 18um. The structure is a 2-port filter. The thickness of substrate is 1.27mm. The software simulates the structure...
View ArticleAdding geometry, keeping mesh.. Help
Hi everyone! I am pretty new in Comsol world, so I hope you can help me.. I am currently doing some RF-simulations of the electrical field in a 3D setup with different geometries of different...
View ArticleMeshing suggestion
Hi Comsol Users: I was looking for some expert opinion about where I should start investigating regarding my problem. I am having difficulties in meshing and I know it could require some tricks....
View ArticleMesh technique in heat transfer
Hi all, I am modelling a pipe flow with a finite block with 'Non-isothermal pip flow' and 'heat transfer in solids'. The block is heated by the flowing fluid. Since the pipe flow in this module is...
View ArticleIce Slurry flow in pipe
Dear Nagi Elabbasi I am currently trying to build a model for ice slurry flow in a pipe using mixture model laminar flow, with my interest in velocity, dispersed phase fraction distribution. i...
View ArticleHow can I manage individual cell values of a mesh in a convergence process?
Using module Semiconductors for computing Electric Potential for a certain geometry, sometimes during convergence process one can observe how few cells close to both exterior limits of a domain and...
View ArticleMesh generation in Comsol 4.3b for Stacked
Hi Guys. I have 4 stacked layers starting from very thick (50 um) to very thin (30 nm) thicknesses. I have problem with mesh generation. Tried everything but could not mesh the geometry. The thinnest...
View ArticleHeat Transfer
Hello I'm a student on the project, and I'm messing in COMSOL 4.0 a short time and have no notion of "heat transfer", I need to get the temperature to stabilize so you can compare with the real model!...
View Articlemeshing error
hi, i got following error several times with different models while meshing. 'failed to respect boundary element on geometry edge'. may i know the reason behind this?
View Articlei need help for wind turbine simulation
Hi everybody.. i have to do wind turbine's blade fluid simulation. ( like this www.youtube.com/watch?v=t5Ioi_...;list=LLzuYZUfzOzTpLaduSXQQqew)
View Articlescript for exporting deformed geom from livlink matlab ?
Hi all, In GUI, I could remesh the deformed configuration from the results dataset, and from there i could export to a new geometry (xx.mphbin). But how can i do the same from matlab livelink ? I...
View Articlemode analysis, not getting the right neff
Hi: I am solving one file using Comsol 3.5a but I am getting neff to be 3.8. I am supposed to get it 3.88. Can anyone check why my neff does not go higher?. I have been trying for days and the best...
View ArticleNumber of Nodes for Mesh
Hello, I am currently working on a solid mechanics project that deals with the phenomenon known as the spring forward effect. I was given the problem with a start of eight nodes. However, the...
View Articleaccess eigenmode displacement for mesh nodes?
Hi! This is my first post to this forum. I have a simple mechanical structure (say, a clamped clamped beam) where I have been trying to extract, via LiveLink, the displacements for the actual mesh...
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