Electric field not adjusting with moving mesh
Hi, I have created a model which is effectively a capacitor with a moving plate. I have ground electrodes on the fixed top plate and +/-100V electrodes on the bottom moving plate. I am using ALE with...
View ArticleCahn Hilliard type Equation not converging in COMSOL General PDE module
i Have been trying to run this model is COMSOL. I am using the PDE module to solve the problem.I keep geting this error Failed to find consistent intial values. Last time step is not converged....
View ArticleRuntime of plasma simulation
Dear Sir, We have some test results as stated below after so many attempts on reducing runtime of plasma module for simulating a chamber with CCP type. a. We tested several cases (such as argon_gec_icp...
View Articleboundary layer meshing ?
Hello, why is the boundary meshing interrupted in the corner of 2 edges? (attached pictures) These are the limits of my plasma reactor. The point where my electrical feedthrough is, ceramic/metal...
View ArticleSymmetry
Hi, I have a question. Could you tell me how I can apply the symmetry part to the part non-symetric ? You can see on the attached picture the situation. Left the symmetry part and right the...
View Article2 Separate Stranded Coils in Multi-Turn Coil Domain
Hi all, I have 2 separate stranded coils to be modeled for transient behavior (Current Pulse input). Since these coils are not of regular shape (linear or Circular), i had to go with numeric coil type...
View ArticleModeling Membrane Permeability in a Coefficient Form PDE Model
Hello, I am trying to model diffusion of water through a cell modeled by a circle placed in the surrounding environment modeled by a square. I first tried out the model using natural boundary...
View ArticleError function in geometry
Hello folks, I wanna to draw "erfc" function as an upper border for my geometry. Any idea ? Thank you in advance!
View Articleelectro-convection
Can Comsol solve an electroconvection problem? To clarify: a polar gas or liquid moves in nonuniform electric field. Thus, we need to solve for electrostatics, and the known field distribution will...
View ArticleTime difference
I am interesting in natural convection simulation. I have a problem of validation my COMSOL model where the time in the literature case differs from my model time . In another words, when I try to...
View Articlevertical moving magnet in the air
hello dears, I want to simulate a moving magnet in the air and see how the magnetic field changes in the air.i used rotating machinary in 2d in the model navigator.i want to use assembly for my model...
View ArticleNear field/Far Field of scatered light from a nanoparticle
Hi,I am simulating in Comsol 4.2. In my simulation domain ,2 micrometer by 2 micrometer,the upper portion is air and the lower surface is glass.A nanoparticle of 300 nm is placed at the...
View Articlecone-jet mode in electrostatic field
Hi, Here is my problem. I want to simulate a electrohydrodynamic (EHD) phenomenone , a nozzle with full water (or electrolyte) in a electrostatic field, the the water is polarized and deformed the...
View ArticleMagnetic Force on an armature
Hello I'm dealing with a very simple problem that has been very frustrating for me! I would appreciate if any one can assist me with that. I'm modeling an E-shaped core in 2D magnetic field module. It...
View ArticleTime integration in comsol 3.5a
Hi everyone, I am just wondering if there is a time integration function in comsol 3.5a. I am calculating fluid flow rate through a boundary and which is a function of time and I would like to...
View ArticlePhysics for a elastomeric vibration isolator.
Good morning. I'm almost finished with my model. The model consists in : 1 - Base. ( Base ) 2 - Elastomeric Rubber. ( Borracha) 3 - Lid. (Tampa) 4 - Screw Hole.( Parafuso ) The Screw Hole receive the...
View Articlecannot use old values as the initial values for new step
Dear sir or madam, I am using comsol to simulate a stationary model. I had convergence problems so that I was forced to vary the inlet BCs gradually to converge to the real case and I had to use the...
View Articlecannot use old values as the initial values for new step
Dear sir or madam, I am using comsol to simulate a stationary model. I had convergence problems so that I was forced to vary the inlet BCs gradually to converge to the real case and I had to use the...
View Articlecannot use old values as the initial values for new step
Dear sir or madam, I am using comsol to simulate a stationary model. I had convergence problems so that I was forced to vary the inlet BCs gradually to converge to the real case and I had to use the...
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