Current Density Plot with EC physics
Hello, I'm very new to comsol and was wondering if one is able to plot the electric current between two plates through a liquid (conductive) solution. I've been looking at the busbar example and see...
View ArticleHow to draw a parabolic shaped solid?
Hi there, I am trying to draw a parabolic shaped solid to present an AFM tip. I can draw a parabolic curve in 2D using the paramatric curve function. Then I can do revolve of the prabolic curve....
View ArticleDiode example solved but strange
Hi I tried to solve the semiconductor diode example from the model library but simplifying it a bit. In particular, I discarded the rounded corner and just made it a text book like pn-junction. It...
View ArticleTotal Mass of a Structure
Hello, I was wondering how to extract the total mass of system. I have solids model of a beam and a beam model of a beam. I wanted to compare their total masses to each other. Any help would be greatly...
View ArticleHow to flip the x-axis?
Hi, Does anybody have any idea about how to flip the x-axis please? Thank you so much for any help
View ArticleParticle-Particle Interaction with two Coupled Charged Particle Traces
Hello, I'm trying to simulate a double particle trace of ions and electrons in a volume to basically simulate ambipolar diffusion, like in plasmas. In a cylindrical volume, in one end I have the ions...
View ArticleAbout applying fixed constraint in Structural Mechanics
Dear All, I currently encountered a problem of using fixed constraint. Basically, in my model, fixed constraint is applied on part of a surface. This is how the structure was fixed and held in reality....
View Articlemodeling sessile droplet evaporation
Dear Firends, does any one has experience with modeling phase change from liquid to gas ? is there exists any tutorial ? I intended to model evaporation of single droplet pinned of relatively hot...
View ArticleRegarding inverted mesh elements
Hi all, We were doing simulation on eddy current damping pendulum,.While solving the equations ,we got the error message that inverted mesh elements were found. How to avoid this?? can anyone tell us...
View ArticleTriaxial Test
I have studied the triaxial test example, "axisymetric" case, which is CU (Consolidated Undrained).This means no variation of pore pressure in the soil. And, how to proceed if one needs to take account...
View Articlehow to understand the code of comsol in matlab editor.
how can i understand the code of programme that is developed with the help of COMSOL and saved as m file and now it is obtained in COMSOL MATLAB editor. how to get to know the curve it shows belongs to...
View ArticleModeling aluminum plate heating
Hi. I am lost and need some help. I need to modeling the following case: The heating suffer by an aluminum plate that it is illuminated by a lamp formed by a matrix of 7x7 leds with a total power of 49...
View ArticleModeling an acoustic t-junction
Hello, I am currently trying to model an acoustic t-junction with the frequency domain acoustic pressure module. But while the 3D simulation gives me reasonable results I only get nonsense from the 2D...
View ArticleIncomplete instruction for Model Library example (Sliding Wedge)
Hello, I'm trying to create a model from Model Library, using only pdf instruction. The model is Sliding Wedge (Structural Mechanics Module/Contact and Friction/sliding_wedge). The problem is, that a...
View ArticleDefining constraint
Hello friends, I would really appreciate some help in defining a constraint. I am trying to solve a system of PDEs but the result at the earlier times keep overshooting the expected value. The maximum...
View Articlehow to get the average values on parallel channels
Hello everybody. Now I simulate the hydynamics of the distributor with parrallel channels. I want to get the mean velocity values in the middle of each channels. I try to use the 'cut plane' on the...
View ArticleDiscussion Forum now Supports LaTeX Equations
Hi, We have just implemented the support of being able to communicate your mathematical equations using LaTeX formula entry. This is described in the 'Help' section, by clicking on the Help button or...
View ArticleImport geometry from Matlab into Comsol
Hello, First of all, I want to emphasize that I am a beginner with Comsol. I am trying to import a geometry generated with Matlab into Comsol in order to study the wave propagation in this geometry. My...
View ArticleX-Ray diffraction pattern through a grating
I want to simulate X-Ray diffraction pattern through a grating. Basically same thing you see in the attached image, but instead of a light source I want an X-Ray source. I used Helmholtz equation, I...
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