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...
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...
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 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...
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?