how to load the temperature field to an block as the body resource load?
I want to simulate the defect detection process on the Al block using the laser-ultrasound,and I don't know how to load the temperature field to an block as the body load.Hoping for help,thanks very much!
View Articledouble parametric sweep in comsol 4.2a
Hi All, I was wondering if it is possible to define to parametric sweep solvers under one study? for example changing the velocity and temperature at the same time. thanks ASAL
View ArticleUrgent : Boundary layer meshing problem
Hi, I need a help to understand the boundary layer meshing in COMSOL. I have an axisymmetric model of a simple cylinder of diameter radius 6 mm. For the penetration depth of 0.14 mm at the outside...
View Articlehow to read 3d graph..
I have attached the screenshot of a pressure graph.please let me know what the x,y and z axis represents.
View Articlesurface plasmon resonance on channel waveguides
hi, I m working on spr based channel waveguides for biomedical application. can anyone pls tell me the tutorial links of modelling spr in comsol as i couldnt get any.
View Articlesurface plasmon resonance on channel waveguides
hi, im working on SPR based channel waveguides for biomedical applications using comsol 4.2 a. can anyone pls suggest me any tutorial links of spr using comsol since i couldnt find any.
View Articlesinusoidal function
Dear all I have to use a sinusoidal function [e,g X0+(X1*(cos*(w*t)))]. Where and how can I write it? rgds Anup
View ArticleModelling of wenner 4-pin method using comsol
Hi I'm new to comsol software. I need help and guide to model wenner 4-pin method using comsol. This is part of my project to model and measure soil resistivity. I've done my measurement using CA6471...
View ArticleExciting batch mode while keeping parametric results
Hello all, I am faced with a problem. I launched a batch calculation on a file where I forgot to remove one study step. The first one is parametric and had finished without trouble. The second one is...
View ArticleHow to Use Solutions from Previous Study as Initial Conditions
I'm trying to perform two RF simulations on the same model, but with two different sets of material definitions. The goal is to run a simulation on the first model and then use that solution as the...
View Articleusing comsol multphysics to add structural mechanics
i'd like to add the Stress and strain tensor equations and others into the comsol multiphysics plane strain (this is hopes of including gauss's law -which i can already do- to make the piezoelectric...
View ArticleSetting pressure point constraint in closed fluid mechanics problem
Hi My problem involves a closed sphere filled with magnetic fluid put near a rectangular bar magnet. Physically when this is done there is a pressure build up in the fluid because of the magnetic body...
View ArticleDefine Young's Modulus as a piecewise function dependent on strain
I'd like to define a new material with a nonlinear Young's modulus as a piecewise function dependent on strain. I've defined the piecewise function under Global Definitions, but I'm confused as to what...
View ArticleHelp...Which Iterative solver settings for 3D RF module with periodic...
Hi All, Can somebody help me with my solver settings confusion. I'm trying to setup a 3D RF module simulation with around 250.000 elements only with periodic boundary condition. I read that I should...
View ArticleElectric Field in an object place in an EM field
Hi, I am quite new to COMSOL and with some help from tutorials I have built this 3D model where a cylinder is placed in the electric field radiated by a dipole antenna. To calculate the Electric field...
View ArticleRadition pattern
Dear Fellows, I simulated dipole antenna and calculate the normalized electric field in the gap of the antenna (near field). Now I want to plot the radiation pattern. Can you tell me where I can find...
View Article"Use space coordinates as arguments" check bock - Interpolation Functions
Dear support-team, recently I updated my Comsol from 4.2a to 4.3a. In my models I use the interpolation functions. In the 4.2a version there was a check box "Use space coordinates as arguments" which...
View ArticleMathematical Particle tracing - resintence force
Hi! I'm trying to compute some trajectories using Comsol Math. Particle Tracing in the Newtonian formulation for some force which is of the form: F=F1+F2 where F1 is proportional with the...
View ArticleMathematical Particle tracing - resintence force
Hi! I'm trying to compute some trajectories using Comsol Math. Particle Tracing in the Newtonian formulation for some force which is of the form: F=F1+F2 where F1 is proportional with the...
View ArticleSystem matrix error in structural mechanics module
Hello! This is in reference to a femur model built to study stress and strain variation upon application of force.However,even after setting the boundary conditions and meshing,it displays an error...
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