Time Dependent Problem
How can i Impose the value of a dependent variable to zero eventhough it is not zero in the initial condition?
View ArticleMapped Mesh for a High Aspect Ratio Geometry
Hello,I am working on a geometry that has a very high aspect ratio and need to create mapped mesh for one of the domains and free triangular mesh for the others.I am facing couple of issues:When trying...
View Articlesimulating transient effects in semiconductor crystals
I am trying to find the best software with which I can simulate the following system: the optical response of a temporally short change in the refractive index of a semiconductor crystal - the change...
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imitate the "thermal_actuator_tem_parameterized" can sovle result
who can help me find the ways make it successful. I imitate the "thermal_actuator_tem_parameterized" the only different is that case's electri insulation can make some contact surface invalid, but I...
View ArticleStructural Mechanics（ Beam）
Once the Beam Interface were inserted into a comsol model, I couldn't remove it again . If I do that ,two problems would occur. 1) I cannot save the model . when I try to save it , a error box popup in...
View ArticleUnable to modify Laplace equation to satisfaction
Hello, I am trying to find the Pressure distribution within the eye by using the laplace equation.The equation for this isK*d(d(Pressure,x))I have 4 domains inside the eye and they all have different K...
View ArticleNeed to change units of concentration
Hello,I am using the transport of diluted species module to simulate drug diffusion through the eye.I need to give the concentration of the drug in the eye ball in terms of mg/cm3 but comsol is...
View ArticleHo to specify magnetic field in a domain
Hi All,I've been scouring the internet for an answer to this question, but I can't find anything about what I'm doing wrong.I'd like to specify a certain magnetic field in a cylindrical air domain that...
View ArticleNot able to access the Tubular packed bed reactor model.
Sir,I'm not able to download the packed bed reactor model file discussed in the 3-D Multi-scale Packed Bed Reactor. Can anyone help me access it?Thank you.
View ArticleTime dependent study for electromagnetic heat source coupling
Hello, I am working on magnetic braking related work.In this i need to do magnetic and Heat transfer analysis, therefore i have taken electromagnetic heat source coupling, done the stationary study,...
View ArticleBoundary Condition for Coefficient form PDE
Hello, I am using the Coefficient form of PDE and I need to set a boundary at a concentration value of 1[mg/cm^3].When the simulation runs, This concentration will spread uniformly throughout the...
View Articlemass balance failure..
Hi.I am new in COMSOL and I am currently working on a model of supported liquid membrane devices. The basic model is that two channel are separated by a layer of membrane in the middle and species...
View Articlehow to draw a bowtie structure
Dose any body have a file of comsol in which bowtie antenna is formed. If any body have it. please give it to me I am in great need.
View ArticleHow to do multiple static analysis steps and use adaptive remesh to update...
Hi, I'm trying to reconstruct a model of cytokinesis in this paperI've tried axisymetric model in COMSOL using the remesh of a single static step in the adaptation and error estimate as the following....
View ArticleIncoherent propagation of light
Hi I'm working on thin film solar cell simulation on COMSOL 5.3a, and in order to overcome the incoherent propagation of light in the thick glass substrate (2mm), I'm going to use phase elimination...
View Article3D stress calculation: no mesh on domain 1 when choosing mapped option
Hi,I am trying to calculate the stress due to a point load in 3D block geometry. When I am using a mapped option mesh, no matter which size of mesh that I choose, comsol always return an error "no mesh...
View ArticleSetting of time dependent study for cyclic voltammetry
Dear all,I want to define a time dependent study for cyclic voltammetry under the Transport of Diluted Species Interface. But I cannot find the way to define the parameter of scan rate. It seems the...
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