What is Comsol multiphysics: Definition and 26 Discussions
COMSOL Multiphysics is a cross-platform finite element analysis, solver and multiphysics simulation software. It allows conventional physics-based user interfaces and coupled systems of partial differential equations (PDEs). COMSOL provides an IDE and unified workflow for electrical, mechanical, fluid, acoustics, and chemical applications.
Beside the classical problems that can be addressed with application modules, the core Multiphysics package can be used to solve PDEs in weak form.
An API for Java and LiveLink for MATLAB and Autodesk Inventor may be used to control the software externally.
An Application Builder can be used to develop independent custom domain-specific simulation applications. Users may use drag-and-drop tools (Form Editor) or programming (Method Editor).
COMSOL Server is a distinct software for the management of COMSOL simulation applications in companies.
Several modules are available for COMSOL, categorized according to the applications areas of Electrical, Mechanical, Fluid, Acoustic, Chemical, Multipurpose, and Interfacing.
What is the best way to solve numerically the following equation using Comsol 5.3.
##\frac{\partial T}{\partial t}=\frac{\partial ^2T}{\partial x^2}+\text{St}\left[1+\left(\frac{\partial T}{\partial x}\right)_{x=0}\right]\frac{\partial T}{\partial x}##
##T(0,t)=1##
##T(\infty ,t)=0##...
There is heating of the surface of the material using an electron beam. It is necessary to calculate how much heat will be released and build a graph of dependence. Please tell me how this can be done, which modules in COMSOL can be used?Thank you!
It is a sensor with a fixed surface and a prescribed displacement on the opposite
To remove this message error,
I have tried to
Increase iterations
Refined mesh
Applied parametric studies
And some other ideas from forums
However it still cannot be solved
It also has a warning of MUMPS out...
I have been experimenting in producing some strain to this object. However, after applying a prescribed displacement and setting it to a certain value, it does not exceed 2.18[um] no matter any extreme value for the prescribed displacement.
I have also experimented with an applied force as well...
Hello, I am trying to learn comsol but I couldn't find how to apply the pressure that changes respect to time and space.
I have pressure function from articles that I read but couldn't implemented on comsol,
and in most studies people make the simulation with Abaqus software so I am not sure...
At the risk of waiting hours on simulations of a sensor, I was wondering if I could use infinite element domain on COMSOL to simplify it.
The first image consists of what I would like to simulate but found out that the simulation time is a huge factor as I have a lot to simulations to conduct...
I would like to solve a coupled system of two PDEs using Comsol for the following geometry:
Equation 1 (valid for 0⩽Z⩽bm):
The initial and boundary conditions are:
Tm(r,t→0)=20
Tm(r→rw,t)=70
Tm(r→∞,t)=20
However, for bm⩽Z⩽bm+b2, the equation to solve is:
With the following initial and...
Hi everyone, Has anyone tried to model Radiative Transfer equation on comsol? I am stuck at defining the integral term which includes scattering. Also , how do i make my functions have 3 variable dependence as RTE has dependence on position, time and direction vector
Hi Y'all
For the purpose of exploring COMSOL, I challenged my self to plot the E/M-fields of a piece of current carrying wire in 3D. It's quite a simple task to plot the fields inside the wire, but I fail when plotting the fields outside the wire.
For plotting the outside fields I have...
I am trying to simulate a Thick-GEM detector in Garfield++. In order to do so, I need information of the field maps which I generate using COMSOL. I've already extracted the mesh data and the potential data. For the initialise function, I need another file that gives dielectric information of...
Hi. I am studying the effect of plasmonic nanoparticles on solar cells. Is there a way to calculate absorption efficiency in different layers of tandem solar cells in COMSOL Multiphysics.
Hi All
How can i simulate Graphene in Comsol? I am using semiconductor module .
I s it correct to use Drude model?
Drude model is in RF module but my simulation should be run in semiconductor module.
How about Kubo formula?(for optics application or no?)
Hi, I use the software COMSOL Multiphysics.
I would like to get the solution outputs of the mathematical problem that I run.
Specificaly I would like to get pressure and velocity (according to time) of the
flow that is flowing through a mean.
Do I have this ability in comsol multyphysics?
How...
hi
who can help me with my problem in comsol multiphysics? i want to calculate a schrodinger equation for a spherical quantum dot under applied magnetic field, who can help me? anyone here have the program doing this? help me if you can. i don't know if there is another program for compute...
Good morning,
I was wondering if you could help me solve a problem with a poroelastic model with COMSOL Multiphysics.
It is a very simple model preliminary to my real study to understand the role of Poisson's ratio on the simulation, keeping all other parameters constant.
The model is a...
Hi friends.
I am so new with Comsol software to design something but I wonder, if it is possible to desing a bending magnet (dipole) and simulate the motions of electrons ? I really would like to do this. Please give me a hand,help me to handle and try to do one together.
Best.
Hello, I'm a telecomunications student. I am new here and I have some doubts with Comsol software.
This is the first time I use Comsol, and I want to simulate the comunication between two antennas inside a tank with 2 different matterial, air and corn(wheat). I have the electric constants of...
Hello everyone!
I'm a new entry in thi forum and I need some help with Comsol multiphysics.
I'm creating a model of tsunami waves propagation in a defined domain using the PDE interface.
I ve not problems in stationary case, but when I try in time dependent case Comsol give me the error...
Hi,
I am using Comsol Multiphysics to model a magnetic plug surounded by water in a tube.
The plug interacts with a magnet and a force is induced.
Since I am using the ALE moving mesh option, i have defined the boundaries of the geometry to move with the velocity of the plug.
This...
Dear Friends !
I would really need Your help. I am currently simulating the temporal development of an interface between liquid and gas, by using Comsol Multiphysics.
The problem can be simplified in terms of a rotating central liquid pick up (a small rotating cylinder endowed with an...
Hi
I'm trying to get comsol multiphysics to first define an inline
function with 1 variable and 4 parameters, and then run fzero on that
same function. I can do it with two parameters, but no moore.
This works:
clear
myfun=inline('exp(y).*cos(x)+z', 'x', 'y', 'z');
x1 =...
Hello everyone,
Does anybody use Comsol multiphysics here?
I am trying to model the electric double layer. If you have experience, please share with me.
I want to solve a system of differential equations in comsol multiphysics.
So far I have not figured out how to enter a 2nd pde in addition to the existing pde.
Is this possible, and how?