Comsol multiphysics Definition and 17 Threads

  1. A

    Looking for help in simulation moving mesh case

    I was looking for a respond on moving mesh using COMSOL, while I was searching on Google I found a response in your forum.
  2. U

    A Solve PDE w/ Comsol 5.3: Numerical Solution & Time Evolution

    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##...
  3. Engineer_Kosyakova

    Engineering COMSOL plot of thermal radiation from heated surfaces -- Help please

    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!
  4. U

    COMSOL: Newton's Iteration reached - Stress testing sensor

    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...
  5. U

    COMSOL: Why does the prescribed displacement stop at a certain point?

    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...
  6. mozer911

    How Can Comsol Model Time and Space Varying Pressure in Laser Shock Peening?

    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...
  7. U

    COMSOL: stress on a sensor, how to use infinite element domain?

    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...
  8. shar333

    A COMSOL Multiphysics- Mathematics

    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
  9. vis viva

    I Personal COMSOL challenge (EM)

    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...
  10. parazit

    COMSOL Multiphysics : Bending -Dipole- Magnet Design

    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.
  11. S

    Need help in comsol multiphysics

    Hi guys, i simply don't know how to start tis thing with... please help... P/S : pls find the attached.
  12. S

    Someone can help me with Comsol multiphysics?

    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...
  13. C

    A liquid/Gas simulation with Comsol Multiphysics

    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...
  14. M

    Comsol Multiphysics Heat Transfer

    I have a problem where the coefficient of thermal conductivity changes as temperature changes. Where/how do I input this into comsol?
  15. H

    Comsol multiphysics; fzero and inline function with many parameters

    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 =...
  16. H

    Comsol Multiphysics: Electric Double Layer Modeling

    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.
  17. N

    Solving System of Differential Equations in COMSOL Multiphysics

    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?
Back
Top