How to tell if two boundaries touch?
I'm trying to create a coil as shown in this article:https://www.comsol.com/blogs/modeling-coils-in-the-acdc-module/How do I check if the boundaries are touching so I can pass current through my...
View ArticleSensor Study: Feeding Time Dependent Transport Study results into...
I am working on a sensor model in which transport of dilute studies module is used with a time dependent study to acquire the concentration inside the sensing film. This concentration information then...
View ArticleLaser ablation on textured surface
Hello to everybody,I need an advice. I want to simulate the effects of laser ablation. The target is transparent substrate like acetate, PET, kapton that is covered with ablatant (like Aluminium),...
View ArticleInflation of a 3D Silicone Enclosure due to Internal Pressure Sweep
Hello all,I'm trying to model the inflation of a silicone rubber enclosure in response to a parametric sweep of internal pressures. My current model is a vertically oriented quarter sphere, as shown in...
View ArticleContact Analysis Using Prescribed Displacement and Boundary Load;...
Hello! I'm designing a piezoresistive tactile sensor using COMSOL 5.5 which consists of an array of microdomes sandwiched between two rectangular blocks. The microdomes are arranged in a ring and...
View ArticleConstant values and variables
Hello! Under the component-plasma-metal contact node, I want to set a voltage on the metal contact boundary. I tried to set a constant value that can be calculated normally. Now I want to set the...
View ArticleS11 changes as the same transmission line structure gets longer
Hi,I am trying to use COMSOL to simulate some lumped-element based transmission line structure (modified CPW line by increasing series inductance and shunt capacitance) by having lumped ports on both...
View Articlepartially contact penetration
Hi everyone, i am simulationg the deformation about two object through the press process (tags the picture below) and there is an uncommon contact penetration. The area that contact initially do not...
View ArticleJohnson Cook in COMSOL
Hi,I am trying to implement Johnson Cool model for Friction Stir Welding heat transfer module. I have defined the JC variable values in 'Materials' section. However, changing these values is creating...
View ArticleMeasuring the resistance across a metal wire
Hello,I am trying to measure the resistance across a metal wire after applying heat to it from one end.Is there a way where I can probe both ends of the metal wire and measure the resistance as a...
View ArticleCAD model import to Comsol
Hi，I have created a model from CAD , and import to Comsol. As you can see from the figure， there always has a crevice . How can I deal with it？I need your help.
View Articlecheck Convergence by decreasing mesh size and time steps
There is a ready example in Comsol for capillary tube levelset. I wanted to check convergency of result by decreasing the mesh size to see if the final bulk velocity will converge to some value... I...
View Articlehow to set TE and TM mode in a waveguide polarizer?
I created wave guide polarizer, which can make TE pass/TM absorp, but I don't know how to set TE and TM mode, as is shown in following picture, I exite TE in this way, I'm not sure I'm correct, anyone...
View ArticleParticle Velocity from Pressure Acoustics, Transient (actd)
Hello, everyone,I am currently working on a simulation model with which I want to calculate the Acoustic Radiation Force on a particle in water. The corresponding calculation approach is taken from...
View ArticleUndefined variable x space coordinate while calling in Variables under...
I create a study with multiple general form PDEs. When I attempted to define variables under Definitions, some variable is actually a function of space coordinate x. For example, eps = omega*x. Upon...
View ArticleAssistance needed
good morning,I have been trying to simulate the thermal runaway effect of a li-ion battery and i have been trying to input the equation governing the heat release during such thermal runaway reaction.i...
View ArticleInconsistent Unit in Drude- Lorentz model
Hi,I am facing inconsistent unit problem while applying Drude- Lorentz model equation for dielectric constant, E - (m^2/(w^2 + i * w * h)) - (f * g^2/((w^2-g^2)+i * k * w)) where E = 5.9673,w=(2 *...
View Article"Solution number out of range"
After running a parametric sweep in COMSOL that works perfectly and produces the desired results, I saved the file. Then, when I reopened it, I am unable to view any results and am given the message...
View ArticleGraphene Saturable Absorption (Multilayered System)
Hello,Does anyone know how to model the graphene saturable absorption on a multilayered system that already calculates analytically the reflectance from the transfer matrix model?Thanks in advance,
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