Cylinder has edges on each quadrant
Hi All, When I draw a simple cylinder it has edges such that it looks like the circular face is made of four quadrants. Also when I mesh the structure since they look like edges, the meshing is finer...
View Article"chladni plate" copyright
I have a question about the application. Are frequency images generated by "chladni plate" application are copyrighted? I would like to use only the image in 2d view (black and white figures) in my...
View ArticleApplying a flux boundary condition with concentration as a limiting condition
Hello,I am using 'Transport of Diluted Species' with a constant flux J0 boundary condition. I need to reverse this flux to -J0 when a maximum concentration is reached at the boundary. And then the flux...
View ArticleCreating a space for vacuum/air in my model
Hi everyone, I am very new to COMSOL so I am just currently learning the basics of the software.I am trying to simulate the electric fields lines in a high voltage feedthrough that is assembled inside...
View ArticleHow to define torsional spring stiffness and torsional damping ratio in the...
Hi,I am doing a simulation analysis of a suspension bridge.The structure is regarded as mass- spring-damping system.Schematic diagram of numerical simulation and governing equations are shown in the...
View ArticleFinding elastic matrix, coupling matrix and relative permittivity
The below post is related to an archived discussion[start here] I want to find Finding elastic matrix, coupling matrix and relative permittivity of Si, Sillicon dioxide, Aluminium and Aluminium...
View Articleplot 1d integral
I have a 2d solution to a PDE and I would like to integrate in y-direction from 0 to 1 and plot the integrated results again x. I am new to Comsol. I thought this should be rather easy to do. However,...
View ArticleElectromechanical (Emi) simulation with COMSOL 4.2
Hi, please can you help me about how to simulate a model under an Electrmechanica (emi) study, because i find just the Solid mechanical, DC/AC and Electrostatics (es).
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Modeling vibration transmission from motor to PCB
Hello all,I am developping a prototype of PCB that will hold a motor running at constant speed along with a couple of accelerometers. In order to estimate the effect of vibration induced by the motor...
View ArticleLinear motion of a magnet - 3D
Hi, i need to implement the linear motion (at constant speed) of a magnet over a ferromagnetic tube. My goal is to plot the behaviour of the magnetic flux inside the metallic tube. The problem that i'm...
View ArticleRunning a parametric sweep using parametric inputs from another study
Hello. In my project I am simulating a resonant cavity with a microwave input. My goal is to simulate the resonant electric field for a variety of geometries.My current simulation process consists of...
View Article"Unable to write solution data" error in parameter sweep
Hello,I am new to COMSOL. Now I'm trying to calculate a deflection of a piezoelectric bimorph with a complex geometry when dc voltage is applied, . I have created working model which calculated good...
View ArticleHow to fix the problem of non-integer exponent and temperature dependent...
Hello everybody, I'm simulating a porous reactive catalitic media for secondary reforming in an ammonia plant in order to optimize the yield and the selectivity of the process as a function of the...
View ArticleHow simulate electric field using both conductivity and permittivity?
Hi,In AC/DC module, electrostatics simulates electric field using permittivity. Electric currents simulates electric field using material conductivity. What if I want to simulate both?Thanks, Jingyi
View ArticleHow to use previous solution calculate some value and update for each time step?
Hi, I've been tortured by this problem for a long time. Hope there's someone can help me. I'm doing a time dependent heat transfer problem, I need to store value h and Z that I calculated at each time...
View ArticleEkman Spiral
Hi everybody, I'm a student in prep school in France and I try to model an Ekman Spiral on Comsol. The flow is caused by wind and Coriolis force in the ocean. Is it possible to model it on Comsol ?...
View ArticleNew to COMSOL
The below post is related to an archived discussionWould anyone be able to help with this question? I have a similar query.
View ArticleCOMSOL Beginner
Hi everyone,I am trying to design a basic capacitive blood pressure sensor but i do not have any background with COMSOL. I do not know how exactly to do it. I have started with tutorials but not...
View ArticleIs it possible to apply load to an object that is location dependent?
Hello,I'm new to COMSOL and would like to ask if anyone know whether my idea below will work or not?I'm trying to create a model for interaction between two objects with the load being distance...
View ArticleSymmetry in electric currents physics
Hi,I am trying to apply symmetry in electric currents physics in COMSOL 5.3a but I can not find a boundary condition for it. In another forum someone has said that electric insulation works as symmetry...
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