How to generate pulsed laser in Bioheat Eq.
For Bioheat equation, there is one parameter which I can input corresponding to laser source, Q_ext (spatial heat source) In this part, I typed the equation of laser radiation below,...
View ArticleHow to restrict the scale of calculation
Well, I'm interested in a model as attached. I'm using the Structural Mechanics Module in order to calculate a deformation at low temperature caused by different thermal expansion coefficients....
View Articlecluster computing
Hello, Can anyone help me figure out these errors andor how to run a very large model on multiple nodes? I am having a terrible time trying to run a very large model on multiple nodes on our cluster. I...
View ArticleProblem with solving large models
Hi, Lately, I've been trying to solve transient, non-linear heat conduction problems with ~500,000 elements. I've noticed that my computer seems to stall during the solution step and was interested to...
View ArticleElectromagnetic forces on parallel current-carrying wires - Comsol example
Dear all, I suppose that Comsol example: Electromagnetic forces on parallel current-carrying wires in ACDC_Module/Verification_Models/parallel_wires should be fully and properly working example. I...
View Articlesolver settings
Hi I'm using two physics piezoelectric and moving mesh. I want to change the thickness of the PZT layer using moving mesh and want to calculate the voltage value for each thickness. how to do it in...
View Articlewireless power transfer by pcb coil
Dear All, I want to model and simulate a wireless power transfer module. Its application is in microchip implant. The model has two 3D microstrip(PCB with substrate) coil. One for transmitter and the...
View ArticleUsing both pressure point and outlet with Pressure, no viscous stress?
Hi! I'm working with natural and forced convection with the aim to design a ventilation/heating system for my master's thesis. I'm wondering if I need a "Pressure Point Constraint" if I'm using an...
View ArticleJava Runtime Environment error
Getting following error, A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x0000003da3efbc6c, pid=6909, tid=46912497239488 # # JRE version: 6.0_20-b02 # Java VM:...
View ArticleIssue: Can not mesh my model
Hello, I am trying to solve the following problem. My model is an electrostatic actuator. The active element is a prestressed cantilever beam made of two layers of Ni. The layers have different...
View Article3D Poisson equation problem coupled with Nernst-Planck equation
I used coupled Electrostatics physics and Transport of Diluted Species physics to simulate this problem. The source term in Poisson equation is the difference between cations and anions. Usually, the...
View ArticleHow to Improve Convergence in Natural Convection
I am wondering how I can improve convergence in my natural convection model. It is a simple model; an isothermal aluminum plate in water. The model starts out fine but as the run continues (transient...
View ArticleEuler-Euler Model: reached singularity
I am running a Euler-Euler model and get a singularity error about six seconds into a 12 second analysis. It appears that there is a high velocity flair at an inlet when the singularity occurs. I have...
View ArticleSimulatneous temperature distribution...!
Dear Comsol Users, I am willing to come over to you again, this time with some questions I would like to be enlighted. I've built a 3D heat exchanger (coil) inside a material (cylinder) and with...
View ArticleCOMSOL Failing at Simple DE?
I've encountered a very simple problem with COMSOL's eigenvalue solver and I was wondering if anyone else has had the same problem. I'm trying to solve the simplest DE imaginable. I'm trying to find...
View ArticleMagnetic Field Simulation
Hi, i'm currently trying to do a mf analysis of the system in append figure. The four quadrangular structures are coils with a external current applied. I defined all the domain's material and added...
View ArticleHow to generate pulsed laser in Bioheat Eq.
For Bioheat equation, there is one parameter which I can input corresponding to laser source, Q_ext (spatial heat source) In this part, I typed the equation of laser radiation below,...
View ArticleHow to restrict the scale of calculation
Well, I'm interested in a model as attached. I'm using the Structural Mechanics Module in order to calculate a deformation at low temperature caused by different thermal expansion coefficients....
View Articlecluster computing
Hello, Can anyone help me figure out these errors andor how to run a very large model on multiple nodes? I am having a terrible time trying to run a very large model on multiple nodes on our cluster. I...
View ArticleProblem with solving large models
Hi, Lately, I've been trying to solve transient, non-linear heat conduction problems with ~500,000 elements. I've noticed that my computer seems to stall during the solution step and was interested to...
View Article