While Loops and Converge Criteria for pseudo steady state model
Hello, I am attempting to create a series of simulations whose aim it is to examine the influence of my model's physics on the models geometry. What I have is a vascular geometry , which has a certain...
View ArticleUpdate Interpolation function in each simulation step
Hello Everyone, I am trying to set up a time-dependent simulation in COMSOL v4.3a. It's a structural mechanics model and the material properties are defined by an interpolation function which is read...
View ArticleHow to use solution as initial value for 2nd study with changed geometry?
Hello Everybody. I’m using comsol 4.3a. I try to use the solution from study 1 (stationary heat transfer) as the initial temperature value for a second time dependent study. Further a new geometry...
View ArticleChemial Engineering, Mass Transfer, Diffusion
I'm simulating the dissolving process of a sphere like droplet in another liquid. The droplet it composed of S and P. S can dissove into the out phase liquid W, while P cannot and stay in the droplet....
View ArticlePart of module
Good day. It is possible to create a report in which it was shown as part of the model? Thank you.
View ArticleHeat transfer through a pipe..
Hi frns, I am facing a strange problem in solving the heat transfer through a meatal pipe. i have completed all the steps boundary conditions are done, meshing is done. The only problem which i am...
View Articlesubsurface apparent resistivity
hello, how can I put in comsol the analytical expression of the apparent resistivity with a shlumberger device thanks
View Articleelectric fields in cell membrane, connecting between boundary ode and domain...
Hello, I'm modeling electric fields in a cell membrane undergoing electroporation (creation of nano-defects, or pores under the influence of electric fields). I am using the ac/dc module in 4.3....
View ArticleAdaptive mesh refinement within a parametric sweep
I am trying to solve a fluid flow problem over a range of inlet flows using a parametric sweep. The solution does not converge at higher flows, so what I would like to do is run the sweep until it...
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 Steps
While simulating our case, we have used strict time step with maximum as 1800 seconds. But still, it is taking a time step of 0.1 sometimes. This is making our simulation quite slow during the middle...
View ArticleSimulation time for 2D and 3D vastly different (with comparable DoF)
Hello, I have a question regarding relative simulation time for 2D and 3D structure. I am using COMSOL RF module to simulate an optical structure. When I try a 2D case with very fine mesh density and...
View ArticleParameters calculation
Hello, I would like to ask if anyone know where I could find a full list or a list of the parameter comsol calculates when solving a model?. For example I know for piezoelectrics Y11 corresponds to the...
View ArticleThermal expansion model.
I am trying to examine the stress distribution in a SiO2 film coated on a thick Si sample with a small Al bump on it, all heated to 600 K. I thought I built the model correctly, but a message that said...
View Article160um long Gold rods - excessive reflections.
Hi guys, I'm hoping someone can help me with an issue I'm having in COMSOL. I'm trying to model a 160um by 13um long gold rod in order to get extinction spectra so I can figure out where its peak is...
View ArticleMeshing and convergence problems
Dear Comsolians, I was finally able to draw the problem in 3D in Comsol :), am also a beginner, lol. The way I have modeled the coils is that they do not form a complete closed loop, thus I assigned...
View ArticleConstrains and laminates
Hello, id like to simulate a laminate with around 5 isotropic laminated layers. These layers are in the form of a plate with a constant area load. The model is a laminate for photovoltaics with area...
View ArticleFrequency domain study for Joule heating physics
I am trying to do a frequency domain study for the physics "Joule heating and thermal expansion". However, I realized that comsol does not support this study for the physics. When I select frequency...
View ArticleVariable modifications between solution iterations
I'm developing a transient model using the Livelink interface. The model first calculates an initial solution for the first time window, then I would like to modify the state variable values due to...
View Article