Looking for someone with comsol experience for a comsol job
I need some comsol models to do in the next month. I don't have the time and experience to finish all so I am looking for some help. This is like a job project if someone is interested. The simulation...
View Articlejava.lang.RuntimeException: Expression is not consistent with previous one
Hello, I am new at comsol and at the moment am having trouble generating solver sequences from a study in a RF module of Comsol 4.0. I have defined a simple geometry which can be varied by Parameters...
View ArticleAC heat generation
Hello, I try to convert the “Hepatic Tumor Ablation” from the Comsol library, which uses DC current and Bioheat transfer, into AC current and Bioheat transfer. Until now the electric field distribution...
View ArticleBH Curve as function of normH and T
Hi, I'm study the induction heating of a billet and I'd like to implement a BH curve as function of normH and the temperature. I have an analytical formula for that where I compute the normB as...
View ArticleVelocity Profile with Gas Absorption or Combstion
Dear all! I am wondering if it is possible to link the velocity profile of a gas flow to its concentrations, or partial pressures. For example, if you have 10% NH3 in air and you're scrubbing it with...
View ArticleHeat transfer through a helical structure.
I am currently working on a model where I am trying to estimate the total heat gained by a cold liquid passing through helical pipe with a rectangular cross section which is being heated by a gas...
View Articlesoil plasticity in poroelasticity
I am doing a project using poroelasticity interface, but I wan to consider plasticity behavior of porous materials, so I need to use plasticity constitutive model for porous materials. How do I add...
View Article3D and 2D integration from the walls of a cylinder
Hello, I need to get integral from the surface of a disk and the walls of a cylinder in 2D and 3D geometries. I am fine with getting integral from the surface of a disk in 2D axisymmetric geometry and...
View ArticleIs it possible to input non-isotropic thermal expansion coefficients for...
I am using Comsol for a small project using solid mechanics physics and was wondering if I could define a coefficient of thermal expansion as diagonal instead of just isotropic for a hyperelastic...
View Articlesolution of Navier-Stokes equation for shear modulus reconstruction
Hello I am solving Navier-Stokes equation for shear modulus estimation with comsol and livelink for matlab. The equation i have to solve in comsol is ∇.μ∇u+∇(λ+μ)∇.u=0 But i can not find this form in...
View ArticleParametric Cutlines and Exporting of Data
Hi, I am currently solving a parametric sweep problem where I am varying a geometry parameter. I wish to create a cutline on the geometry which depends on this. Currently I have my cutline defined with...
View ArticleWaveguide amplitude errors, scattering boundary condition
Hello everyone! I am modeling a waveguide with the purpose of verification, but I am getting high errors in amplitude when the length of the waveguide is not a multiple of the wavelength of the...
View ArticleTrouble with Livelink-tutorial
Hello, I am trying to set up the busbar example taken from the 'Introduction to LiveLink for MATLAB'-PDF. I am using Ubuntu 12.04, MATLAB 2013a and COMSOL 4.3a. I am able to proceed until mphgeom() is...
View Articlesimple tissue ablation model
Hey all, Im trying to set up a very simple ablation model of cardiac trouble and am having trouble the model is a simple 2D axisymmetric geom consisting of a square with a small rectangular electrode...
View ArticleCopper Electrodeposition in a Trench
I tried to extend the Copper Electrodeposition example in COMSOL, but I obtained "inverted mesh elements" and, hence, graphical artiphacts at larger times (> 14 secs used in the original model). You...
View Articledielectric shielding
Dear all, I want to add a dielectric around a wire (A=0.1*0.1cm2). I go through COMSOL version 4.1 user guide and I found out that there is Dielectric part in Electric Current node. But I could not...
View ArticleMulti Turn Coil - reverse field
Hi, I am building a Beam-Line simulation using COMSOL 4.3.0.151, using a geometry imported from a CAD file constructed by my engineer. 1st step is to assemble the magnetic optics, for which i imported...
View ArticleThe wake of a ship simulation
Hellow Everyone, I'm a really noob beginner in COMSOL.. and I've been struggling with this (a priori great) software for 3 days to create a flow around a boat (or a random floating object). My study...
View Articleabout heater simulation in the room
Hello! I am use comsol 4.3a , and use the non-isothermal flow physics to simulate the heater in the room. And the room has a door , and I want to set the door is open, and it is connect to the...
View ArticleHeat source: Temperature profile instead of heat
Hi, I want to use measured values to define a heat source in the "Conjugate Heat Transfer". I could already generate a 3D-function of these values which can be used as Q. But my problem is that the...
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