Find Potential by using Poisson equation
I want to calculate charge distribution due to the geometry and potential due to geometry of a trap in PDMS. Can you please guide me how can I do this using the poisson equation. I am also new to...
View ArticlePoint load in 2D
I have a simple 2D model, with a bezier open curve (linear segments) defining my beam structure. All beams are same and define some rigid truss (where I want to take into account torques so I am...
View ArticleMotor in rmm Physics, Moving mesh,
Dear all I am simulating a pm_motor in comsol with rmm physics. While I added study in comsol, in time dependent step.I define the rotor with moving mesh.The result reached, but, while I export the...
View ArticleProper Module/geometry to model fiber optic cable in comsol in soil layers
Hi,I am new to comsol and I want to model a vertical Fiber Optic distributed temperature sensing (DTS) cable in soil layers, and then use the heat transfer module to get the temperature in different...
View ArticleInduction heating with single conductor coil
Hi! I am a new COMSOL user and I am trying to model induction heating with a 3D single-turn single conductor coil (please see attached model). I get an error message to "solve [the coil] in a Coil...
View ArticleHow to ensure convergence
Hi, I am new in Comsol. I encountered a problem ,the computing remain 93% for a long time, and the convergence curve always fluctuated. The figure is attached. Anyone konw how to solve this problem,...
View ArticleAnalysis of Brick masonry wall
Hello all,I am analyzing a brick masonry wall under Structural Mechanics Module. I applied load diagonally at both ends. The study completed but stresses are shown only at the ends. I need individual...
View ArticleThe same definition but different results in different physics
Dear all Have you met the question that the same definitions but different rusults? I am simulating a pm_motor. While I used the same definitions to define the magnets in my motor, the result of...
View ArticleBeam Uncurling
I have a curved beam that I am attempting to uncurl by keeping one end in place with a prescribed displacement) and applying a prescribed displacement on one point on the other end which should move it...
View Articleset rotating boundary condition in 3D annulus flow
Dear all, I'm kind of new user of Comsol. Any suggestion will be appreciated regarding to my question. I want to model fluid flow in annulus (between two cylinders) with the inter cyliner rotating with...
View ArticleLaser Heating of a Silicon Wafer
Hello, I am a novice in COMSOL. I have designed my own model based on "laser heating of a silicon wafer tutorial" https://www.comsol.com/model/laser-heating-of-a-silicon-wafer-13835Can someone tell me...
View ArticleLoop Variable Correlation Was Detected
Hello!I meet a problem,when i click the study,it shows a error:Loop variable correlation was detected.If you have met this problem before,could you teach me how to solve it,please................. the...
View ArticleExact calculation of electrical current from current density
Hello everybody,I am using comsol to model a bipolar probe with three surfaces : Conductive surface forced to 0V, conductive surface forced to 10V and insulation surface beetween the two conductive...
View ArticleApplying Moving mesh (rotating domain) in microwave heating
Hello COMSOL experts!A question about RF module configuration, applying a rotation movement to solve a microwave heating problem (using electromagnetic waves and heat transfer in solids physics): 2...
View ArticleSaving as java by default, rather than mph
Hello,Does anyone know if there is a way to have COMSOL save the modelling currently opened in the GUI as a java file by default, rather than a mph file?I have written a small script that reads my java...
View ArticleLiveLink, using a variable as a parameter set
Hi all,I would like to be able to change one parameter of my model inside of a for loop with LiveLink and then run the model. Does anyone know how to do this? My code looks something like this:for...
View ArticleElectric Field Simulation
HiI am trying to plot electric field between the aluminimum profiles and I got electric potential when I grounded the last one.How can I get an electric potential plot ?Thank you
View ArticleThe magnetic insulation in RMM physics
Dear all， I am simulating a pm_motor, I have used the magnetic field(mf) to define the magnets in the model. Now I need to add more details to reach results,so I change mf into rotating magnetic...
View ArticleHow to consider the system time in COMSOL?
Dear Engineer： I want to know how to use the random() function to proced a random related with the systme time?Thank you.
View Articlewire electrode simulation
I want to know if possible to modify the wire electrode module ( electrochemical engineering application ) to work with turbulent flow hence the exist module working with laminar flow and when i tried...
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