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Heat transfer setting temperatures not affected by material
So when I do a heat transfer (stationary, 2d), I have a rectangle and I set the top and the sides to 300K, and the bottom to 600K. Then I do temperature profiles of these conditions for two materials...
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Tracking position of isothermal or general contour curve in 1D plot
Hi everyone, I have very simple model where copper plate is heated by a pulsed laser (transient study, 2D, see file surfaceplot_1). Now, I am searching for a way to track the position/depth of my...
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Large mesh with Beam Envelopes module
Dear all, probably I'm missing something about the use of the Electromagnetic Waves, Beam Envelopes; as I understand well, this module can be used to simulate a long waveguide (some mm or cm long) but...
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Capacitance from sinusoid voltage
Hi everyone! For modeling I am using 3D Comsol Multiphysics // AC/DC module // Quasi Statics, electric // time harmonic analysis. In postprocessing Comsol calculates and plots electric potential and...
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Electric field in air between metal tip and semiconductor
Hello, I'm new with COMSOL. I'd like to know what is the most suitable module or procedure to study the electric field in air between a metal probe and a semiconductor. I understand that...
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Simulation of Van der Waals forces using Comsol v4.3
I'm trying to simulate the attractive Van der Waals force between two nanometric structures. My initial idea was to integrate the Lennard-Jones potential created by one domain (\integral...
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modeling of turbulent flow in pipe and annulus. (pipe has porous wall)
Hi, I am trying to model turbulent flow in a pipe and annulus and find the pressure and velocity distributions. The flow is going to the pipe and is coming back from the annulus. The pipe has porous...
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"Axis to use as symmetry plane normal" settings
Hi I have some inquiries about the stated subject. Under the postbuckling shell tutorial of the verification models of structural mechanics module, it is stated to that different symmetry edges are...
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heat transfer in porous media and conjugate heat transfer
Hello everyone, I'm new to Comsol and I'm trying to couple the heat transfer in porous media with the conjugate heat transfer (solid + water in laminar flow). But i have a lots of problems. I would...
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AC impedance of a dipole
Hello, I am at the moment trying to simulate a simple system and I am having a few problems. I am trying to calculate the self impedance of a dipole located inside a full space of conductivity 0 and...
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Plasma Module Error: Failed to Evaluate Variable Jacobian
I am attempting to model a DC microdischarge in Argon using COMSOL 4.2. I am using a 2D axisymmetric model. The top layer is the anode, the middle layer is a dielectric and the bottom layer is the...
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Heat transfer setting temperatures not affected by material
So when I do a heat transfer (stationary, 2d), I have a rectangle and I set the top and the sides to 300K, and the bottom to 600K. Then I do temperature profiles of these conditions for two materials...
View ArticleClik here to view.
Tracking position of isothermal or general contour curve in 1D plot
Hi everyone, I have very simple model where copper plate is heated by a pulsed laser (transient study, 2D, see file surfaceplot_1). Now, I am searching for a way to track the position/depth of my...
View ArticleClik here to view.
Large mesh with Beam Envelopes module
Dear all, probably I'm missing something about the use of the Electromagnetic Waves, Beam Envelopes; as I understand well, this module can be used to simulate a long waveguide (some mm or cm long) but...
View ArticleClik here to view.
Simulation of Van der Waals forces using Comsol v4.3
I'm trying to simulate the attractive Van der Waals force between two nanometric structures. My initial idea was to integrate the Lennard-Jones potential created by one domain (\integral...
View ArticleClik here to view.
Capacitance from sinusoid voltage
Hi everyone! For modeling I am using 3D Comsol Multiphysics // AC/DC module // Quasi Statics, electric // time harmonic analysis. In postprocessing Comsol calculates and plots electric potential and...
View ArticleClik here to view.
Electric field in air between metal tip and semiconductor
Hello, I'm new with COMSOL. I'd like to know what is the most suitable module or procedure to study the electric field in air between a metal probe and a semiconductor. I understand that...
View ArticleClik here to view.
modeling of turbulent flow in pipe and annulus. (pipe has porous wall)
Hi, I am trying to model turbulent flow in a pipe and annulus and find the pressure and velocity distributions. The flow is going to the pipe and is coming back from the annulus. The pipe has porous...
View ArticleClik here to view.
COMSOL 4.4 Installation-Error
Hi, I am trying to install COMSOL 4.4 in my machine. I have already installed COMSOL 4.3b and its license manager. I would like to keep 4.3b version in my machine too. When I setup a new license...
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Mesh Problem
Hello, I have problem with mesh generation for my model. I made a 3D glass beads with lots of grains. When I want to mesh that I faced some error in meshing. sometimes it meshed but then during study...
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