Undefined value found
Dear COMSOL Community I have a question regarding the example of the Vanadium Redox Flow Battery (www.comsol.com/showroom/documentation/modeāl/14153/). I have tried to simulate it but I get following...
View ArticleHow to figure out the wave type for scattering boundary condition?
Hello, I'm a newbie in Comsol and I have a question, which you might be able to answere. I want to simulate the absorption and scattering of nanoparticles illuminated with an incident plane wave. My...
View Articlehow to get no gridlines in comsol plots
In any 1-D plotgroup whether a point or line graph is there a way to avoid grid lines and retian the tick labels
View ArticleEvaluation of line integral via Matlab
Hey! I have a question concerning the evaluation of results via Matlab: I added a line-integral to my model in the Comnsol-desktop which I can see in the exported m-file as:...
View ArticlePhD position available
Dear colleagues, We are looking for a higly qualified PhD candidate to start towards the end of this year. The PhD study would take place at the Institute for Technical Physics...
View Articlecurrent
Hi there, IĀ“m modeling the distribution of the electrical potential applied by an electrode (1V) in different media using the electrical currents interface. For my questionaire, I additionally need the...
View ArticleImplicit boundary condition
Hello, I am trying to solve a set of reaction-diffusion equations and the heat equation, using general form PDE. On one boundary some of the boundary fluxes depend on a quantity (electrochemical...
View Articlecoil on the iron build!
Hallo everyone, please help me, i wanna only to build a coil on a iron core und this with Comsol, bu i donĀ“t know how is going.. :/ ThankĀ“s you in forward!
View ArticleProblem with heat transfert in lava
Hello everyone, I posted a topic here because I encounter a problem with Comsol. Indeed, I try to modelize a lava flow, but I have a problem to fix the temperature of middle flow as you can see on this...
View ArticleLaminar Flow and Moving Mesh
Hi all, I want to model a slice of the earth's crust under horizontal compression and look at the deformation that is occurring. In the Model this is represented by a fluid body with high viscosity,...
View ArticleModeling a spring and damper system
I am having trouble modeling a simple 2D spring mass damper system. The geometry comprises the spring at the upper end anchored (fixed) attached to a square mass which in turn is attached to a damper...
View Articlecurrent and temperature dependent conductivity (sigma(T,j) )
Dear all, I am trying to model a conducting wire, where the conductivity depends both on the actual temperature and the actual current density. The temperature dependence is no problem. But I donĀ“t...
View ArticleHow to deal with Contact problems, Adhesion!!
Hello Everyone, I am dealing with the topics of contact mechanics and adhesion. In my case, two surfaces are adhered strongly and I would like to model the detachment of contact or treat it as a crack...
View ArticleProblem in cylinder geometry
Hello, I'm a new user of Comsol and I have the following problem: I'm is using a cylinder geometry with radius:0.013m and lenght: 172m when I build this geometry I dont have a cylinder in the grafics...
View ArticlePlasticity - Cyclic Hardening
Hi all, I am modelling a process where a steel plate is subject to cyclic forces that cause plastic deformation. As the process is cyclic I am inclined to use the kinematic hardening option - I am...
View Article2-Step Full Field followed Scattered Field Simulation
I am trying to solve for the scattered electric field from a gold nanoparticle on a semiconducting substrate, using a 2-step process identical to the example file "Scatterer on Substrate." When solving...
View Articlehow did I acquire the position of particles in particle tracing module
I have a confusion which is to get the data of particles when I use matlab linking with comsol. But the function of mpheval is error. For instance, qx=mpheval(model,{'qx'},'dataset','part1','t',0);...
View ArticleError from the Modal Frequency Response analysis
Dear all, I am trying the Modal Frequency Response analysis tutorial with the elbow bracket example in the Model Library. However, if I try to run the tutorial model file for modal frequency response...
View Articlesine excitation
Hi all. I am performing a 2D frequency analysis in the Structural Mechanics Module. I want to apply a prescribed displacement on the left boundary and to see which waves propagate inside the medium....
View Articlehow to set up the ions in water dans my nano-fluidics
hi everyone, I'm trying to simulate the nanofluidics covered by a layer of SiO2 of which the thickness is about 50nm. In the nanofluidicsm there is water or other liquid. First of all, I set the...
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