Simulation in COMSOL?

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"Idrisi Selva" tutorial Books for pridiction with driving factors in modeling?

Some educational books with practical exercises of the "Idrisi Selva" software, which have step-by-step visual training for predicting the change of land use/land cover and including the use of...

28 July 2024 4,168 0 View

Hello, does anyone know how I can get coordinates of two specific points on a moving body in Abaqus when applying a vdload subroutine?

Hello I am trying to simulate repulsive force of two permanent magnets in Abaqus. I have implemented Force equations into a vdload subroutine. sensitive parameters are the center to center...

15 July 2024 3,491 0 View

How to install a shiny app?

For example, I want to install the app "01_hello" as an independent app (like many other apps of windows). Please find the attached screen. But after playing the app, I run into error.

22 May 2024 955 2 View

Seeking Insights on Real-Time PCR Tests with Cobas Z480: Quantitative and Qualitative Analysis?

Hello everyone, I’m delving into the functionalities of the Cobas Z480 analyzer and I’m eager to learn not only its basic operating principles but also about the different real-time PCR tests,...

20 May 2024 7,861 0 View

JCR, Scopus journals, urban planning, analysis of urban facilities and opportunities, transportation and land use ?

Please name some prestigious JCR and Scopus journals in the fields of urban planning, sustainable development, analysis of urban facilities and opportunities, transportation and land use with high...

11 May 2024 4,789 5 View

Journals by sending to multiple reviewers to give authors more opportunities to correct their manuscripts and gain acceptance?

Is it true that some journals, in case of rejection of an article by some reviewers, send it to several other reviewers so that if there is innovation in the article, justice is done and good...

11 May 2024 401 0 View

Artificial intelligences for literature review?

Which artificial intelligences can be useful in finding scientific papers related to a topic to prepare a literature review of the research (methodology, case study location, variables used)?...

10 May 2024 9,478 3 View

Hello, I need to model a pair of permanent magnets in a part of my FE model. Could anyone guide me about how it is done in Abaqus?

#Magnets #Abaqus

19 April 2024 1,886 0 View

Automatic Modulation Classification (AMC)?

I am researching on automatic modulation classification (AMC). I used the "RADIOML 2018.01A" dataset to simulate AMC and used the convolutional long-short term deep neural network (CLDNN) method...

26 March 2024 8,557 1 View

How do I select the appropriate applied potentials for chronoamperometric to test the stability of electrode material in electrochemical HER/OER?

Currently, I’m working on electrochemical water splitting, specifically focusing on the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). I want to know how I choose...

18 March 2024 5,393 1 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

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

I have need a LPBF/SLM model on comsol multiphysics ?

In this model clearly understanding how to active one layer to another layer and how to add powder material properties step by step.

08 July 2024 6,147 0 View

Is it possible to define exothermic processes in finite element software like COMSOL? If yes, how can this be done?

We aim to study an exothermic process and evaluate its temporal changes. Could you recommend suitable software for this purpose and explain how to conduct this analysis? What specific data is...

30 June 2024 8,413 1 View

Has anyone simulated Argon plasma jet in Comsol?

Hello, Has anyone successfully modeled 2D argon plasma jet using the COMSOL? I would greatly appreciate any guidance on this matter.

30 June 2024 5,597 0 View

COMSOL simulation of transient wave optics propagation is not physical?

Hi guys, I am trying to simulate a 1 ps long plane wave propagating in a dispersive material, with the wave optics transient module. According to the drude-lorentz model, when the frequency of...

29 June 2024 486 1 View

Turki Haj Mohamad

Same problem is discussed in this forum:

https://www.comsol.com/forum/thread/42763/fail-to-evaluate-variable-material-epsilonr13?last=2014-03-04T12:29:57Z

Amir Tahmasebi Boldaji

sorry, I didn't find any usefull information in this page

René Christensen

Looks like you perhaps have forgotten to mesh, or apply a physics to those domains. Since it is only 3 domains, go through them all to see if something obvious is missing.