How can I get numerical solution to the poisson equation of Independent double gate MOSFET in COMSOL MULTIPHYSICS?

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How to solve non linear equations in MATLAB?

If vg is varying from 0 to 2 in steps of 0.01, i.e vg=linspace(0,2,N), N=100 n is varying from 1 to Neq1(n) ------>(xo2(n) +xo(n) +xar(n) - 1-Vg(n))=0;eq2(n) ------>(2*xo2(n) +xo(n)...

11 December 2015 604 0 View

Can any one please helpme how to solve the non linear equation in matlab without knowing initial guess and boundary conditions..?

1.Please suggest any algorithms to find initial guess Or boundary conditions for the given non linear equations? 2. How to solve the non linear equations without knowing any information...

08 September 2015 9,289 3 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

Regarding LBM in Boiling?

What should be the equation for halfway bounce back boundary condition for flow field with forcing term?

08 August 2024 7,938 1 View

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

How to get LP fiber modes directly from Comsol?

Hi there, I'm new to modelling with comsol. I would like to ask if it is possible for comsol to output linearly polarized (LP) modes? I tried modelling a simple single mode fiber with an enlarged...

23 July 2024 4,019 3 View

Can anyone help with this comsol error? Pleaaaase I need help !!?

Undefined variable. - Variable: comp1.cNa - Géométrie: geom1 - Domaine: 1 Failed to evaluate expression. - Expression: comp1.cNa - Affichage: Graphique sur ligne 1

19 July 2024 1,938 2 View

Why electrical charge on the moving plate increase?

Hi, everyone This figure depicts a simulation of an electrostatic energy harvesting system in COMSOL Multiphysics software. My question is regarding the relationship between the changes in...

19 July 2024 4,694 4 View

Why does the error "The relative error (0.29) is greater than the relative tolerance" appear in Comsol Multiphysics?

Hello, My name is Radu Jubleanu, I am a PhD student at the Politehnica University of Bucharest. I work in the field of magnetic storage in superconductors. I want to carry out a numerical study of...

15 July 2024 6,025 1 View

How to use stress and displacement results from 1st stationary simulation as initial conditions for 2nd eigenfrequency simulation in COMSOL?

Dear All, I am trying to define the dispersion curves of a periodic unit cell in COMSOL Multiphysics with prescribed displacements. I am using two separate studies: - Study 1: Stationary, with...

13 July 2024 7,855 1 View

How to introduce on fluent the optical loss of the wall due to the reflection of the plate towards the environment ?

"When solar irradiation reaches a surface, some of it is absorbed while the rest is reflected. Part of the light absorbed by the surface transforms into heat and increases the module's...

13 July 2024 8,621 5 View

How to add channel doping variation in sentaurus tcad to see its effect on transfer characteristics of mosfet?

I am getting trouble in studying the effect of channel doping variation in forksheet structure for p and nmos.

08 July 2024 2,074 0 View