What is the origin for terms G(n/Nc) and G(p/Nv) in equations of COMSOL Semiconductor Module?

Please check the attachment.

10 November 2018 9,716 0 View

How can I join a "Stationary" and a "Eigenvalue" study in one COMSOL study?

I first need to perform a "Stationary" study ( first step) and then "Eigenvalue" study as the second step in a COMSOL model. The Eigenvalue PDE will feed by the results of "Stationary" study. I...

02 March 2016 8,889 1 View

How to plot a 2D variable with several optimized parameters at the end of 2D Curve Fitting Optimization in COMSOL?

There is one example which clearly shows, who it is possible to optimized parameters in order to fit 1D experimental data to a 1D function in COMSOL. At the end ,"Global" node has been used to...

01 February 2016 5,117 0 View

No title

11 December 2015 2,475 2 View

How can the results of two separated (Eigenvalue) studies be imported in third (Stationary) study in COMSOL?

11 December 2015 9,568 1 View

How to merge the results of a "Parametric sweep" applied to a 2D model to make 3D data in COMSOL?

Imagine, there are series of 2D results which must be complete using "parametric sweep" (e.g. set of {S(y, z)}, each " S" for one point in x direction). This means "Parametric sweep" has been done...

10 November 2015 1,780 1 View

How can I improve the quality of step like, position dependent variable in COMSOL?

10 November 2015 7,556 3 View

How do I import 2D data (cross section) resulted from first solution(3D) to the second 2D physics as a position dependent variable in COMSOL?

09 October 2015 4,218 6 View

No title

Imagine you have two 3D PDE to solve by COMSOL. The answer of first one will later replace as position dependent variable in second physics. There is two option. One way to do that is to export...

04 May 2015 8,199 4 View

Can someone show me a simple theoretical explanation to understand shifting of Fermi level on semiconductor due to applying vertical electric field?

03 April 2015 5,221 5 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

Error in comsol?

Dear respected researchers, while performing CFD analysis in Comsol it's showing like this Error: Nonlinear solver did not converge. The maximum number of Newton iterations reached can...

24 February 2021 249 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

How can I find the effect of different parameters like (Reynolds number, Hartman number, volume friction etc.) in COMSOL?

Here I am facing this problem. I don't find any effect of this type of parameters. I am a beginner user of COMSOL.

23 February 2021 9,086 3 View