Study settings
Hi,I find different results for the same model while using different time range.When I simulate the model with study (0,0.1,100) and simulate the same model with same study with range (0,0.1,200) I...
View ArticleMesh warning (size): There is no feature using these settings
The below post is related to an archived discussion[start here] Could someone please comment on this error? During my very first simulation, I have experienced such warning in the mesh module. Are we...
View ArticleInitial Value for Strains
Hi, I need to specify initial values for strains inside a domain such that the current geometry has some stress-free prescribed strains.Could anyone give a hint on how to do so.Thanks, Mo
View ArticleChronoamperometry Measuring Current due to Electrode-Electrolyte Diffusion at...
Good Evening,I am currently trying to perform a Cottrell Experiment by simulating electrolyte diffusing into our working electrode of interest which in this specific case is a 3D thin film. I used...
View ArticleSimulation of steam condensation in tubes using two-phase flow field
I have seen some cases of phase change on COMSOL website, but they are all about evaporation and liquid-solid phase change. I have not seen condensation simulation. How to use multiphase flow to...
View ArticleHow can I monitor the Level-Set's boundary in time?
How can I monitor the Level-Set's boundary in time? To simulate the droplet impact on the wall. The Level-Set's boundary means the line when the ls.Vf2=0.5. when using integration operator, The result...
View ArticleI'd like to simulate thermal deformation of a thin glass due to a laser...
Hello,I just attached the concept file that shows what I want to simulate. I'd like to estimate how a thin glass is deformed when it is heated upto the softening temperature by a laser beam under extra...
View ArticleElectrical Double Layer Simulation
Hi There,I am having problem while simulating the 3D electricl double layer problem. The specific errors will ocur during solving multiphysics problem. I am attaching the .mph file for you...
View ArticleIssue regarding coupling piezoelectric and Fluid surface interaction
Hello,I am trying to simulate piezo actuated valve. I am having some problems with couplaing piezo and fluid surface interaction. I have used moving mesh for fluid domain however, the fluid domain does...
View ArticleCalculation of dielectrophoretic force on a line
Hi,I am performing a 2-d simulation in COMSOL 5.5 in which a microfluidc device separates different cells using dielectrophoresis. I want to compute the dielectrophoretic force acting on different...
View ArticleDraw point graph for difference between two points
I have 2D time dependent simulation of cooling. I have created two "Cut Point 2D" in the Results/Data Sets. I can draw line graph for boths points using "1D Plot Group" and two "Point Graph" inside....
View Articlequestion about small imaginary part for eigenfrequency
Hello all,I am running a study for acoustic in a hard wall cylindrical tank. The problem can be easily solved by separation of variables. Theoretically, the eigenfrequencies are all real. But why the...
View Articlegeometry updating from matlab through comsol livelink
how do i update the values in comsol for matlab and matlab for comsol?
View ArticleElectrical currents in porous media
Hello!I am doing simulation of saturated by water sand rock (porosity 0.35). No flow of water, but on the side borders I am applying eleŃtric potential difference. Electrical current pathing through...
View ArticleSimulation of 2D and 3D optical fiber for frequency domain for mode analysis...
I want to know how to simulate 2D & 3D optical fiber. (Actually I simulated 2D already). I am facing problems in 3D. Just guide me regarding boundary conditions ie condition for scattering at entry...
View ArticleDynamically create export data file name
Hello, I want to export data after simulation. I would like to include the variables I defined in the Component 1 > Definitions > Variables section into my output file name. For example, if I use...
View ArticleOptical microscope image simulation
i am trying to simulate an optical microscope image of a 4 micron diameter sized particle which is placed between an analyzer and a polarizer under 400-700 nm white light.Particle has internal ordering...
View ArticleMeshing 2D Material
Hello!I am new at using COMSOL Multiphysics, and I am currently learning how to use it in order to simulate the heat flux across a 2D Material that is deposited between a heater bar and a sensor bar. I...
View ArticleBulk temperature
Hello I am simulating annular flow in 3D. I want to write the expression to calculate bulk temperature in 3D but every time I faild. Can COMSOL experts can help me to write this expression
View ArticleInstant decrease of the temperature after the voltage pulse
Hello, dear colleagues!I am pretty new to COMSOL and nowadays I am making a model with the Heat Transfer in Solids module. I am applying voltage pulses to my structure and looking at the change of the...
View Article