Time-dependent heat sources are not being incorporated into solution
Hi everyone, I am using FEA to find residual stresses in a 4-pass weld plate. I am using the Thermal Stress (Solid Mechanics/ Heat transfer in solids coupling) option. I used 4 volumetric heat sources...
View ArticleFinding the Inductance of a Moving Spiral Coil
Hi everyone, I am trying to simulate an out-of-plane spiral coil that expands and contracts based on the change of its temperature. The spiral coil is exposed to a radio frequency field between 10 -...
View Article4.4 Version Packed Bed Reactor - Error Message
Hello, I am trying to model the oxidation of Naphthalene, using the packed bed reactor model. I went step by step with the model library manual and I receive this error when computing:"Failed to find a...
View ArticleTime dependent analysis with Magnetic Fields (mf) and Conjugate heat transfer...
Hi! I'm trying to model the magnetic and electric fields and the heat generated by a coil that is powered by 2 solenoids immersed in a fluid. Since my model is not axisymmetric I use a 3D model and for...
View ArticleMeasuring Induced voltage of Parrallel Coils
Hi, Would anyone be able to tell me why the induced voltage in the 2 outer coils in the attached model have a higher value than the centre coil? The measured Flux values are correct and the centre...
View ArticleMaybe you can solve it-------How to edit/ add a semiconductor doping model in...
Hi there, I am learner of Comsol. I have simulated a p-n junction according to help documents step by step, and it worked. But now I want to change the doping profile in the n domain. How should I do ?...
View ArticleHeat transfer
Can anyone tell me what is the recomeded NLfail value in simulation Comsol solver. Thank you inadvance for your help!
View Articleusing the Amazon cloud
I was interested in hearing any opinions regarding the use of COMSOL in the Amazon cloud. We currently have limited computing resources in house and so we'll either purchase a new machine or switch...
View Articleresults depend on parameter sweep order?
Hi all, Is it possible that in some cases the results of a structural mechanics simulation depends on the order in which a parametric sweep is done? I am simulating the deformation of an object when it...
View ArticleRamp fuction or?
Hi, I am simulating heat transfer with fluid flow, thus I need to slowly increase my heat source to make my simulation works. Until now I've been using step function but I feel liek ramp function fits...
View ArticleTransport of diluted species and electrostatics
Dear Community, I am trying to combine the physics of the poisson equation (electrostatics) with the nernst-planck (transport of diluted species) in Comsol 4.1 for like 6 weeks now, and all I get is...
View ArticleConfiguring the cluster mode
Hello all, I've got trouble configuring properly the cluster solver configuration. I want to run a given mph in parallel on a Linux cluster (I'm using qsub on the server side). I don't want to have to...
View ArticleVarious Problems for Two Phase Flow coupling with Electrostatic
Hi! I am working on Two Phase Flow coupling with Electrostatic using transient (phase initialization and time dependent) solver to simulate electrospray phenomenon, I have encounter some problems and...
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 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 ArticleFinding the Inductance of a Moving Spiral Coil
Hi everyone, I am trying to simulate an out-of-plane spiral coil that expands and contracts based on the change of its temperature. The spiral coil is exposed to a radio frequency field between 10 -...
View Article4.4 Version Packed Bed Reactor - Error Message
Hello, I am trying to model the oxidation of Naphthalene, using the packed bed reactor model. I went step by step with the model library manual and I receive this error when computing:"Failed to find a...
View ArticleTime dependent analysis with Magnetic Fields (mf) and Conjugate heat transfer...
Hi! I'm trying to model the magnetic and electric fields and the heat generated by a coil that is powered by 2 solenoids immersed in a fluid. Since my model is not axisymmetric I use a 3D model and for...
View ArticleMeasuring Induced voltage of Parrallel Coils
Hi, Would anyone be able to tell me why the induced voltage in the 2 outer coils in the attached model have a higher value than the centre coil? The measured Flux values are correct and the centre...
View ArticleMaybe you can solve it-------How to edit/ add a semiconductor doping model in...
Hi there, I am learner of Comsol. I have simulated a p-n junction according to help documents step by step, and it worked. But now I want to change the doping profile in the n domain. How should I do ?...
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