How to do laser ablation
Hello,How can I best recreate this effect on the picture? Using Gaussian function, but how can I deform the material? Please give advice.
View ArticleImport and assign grain orientation from an .csv file
Hi you all, I am trying to investigate the impact of grain orientation on the steel corrosion at the moment. I have used external software: MTEX, Gmsh and Matlab to generate mesh (.msh) and extract a...
View Articlepressure load on prestressed membrane
I've been trying to simulate a MEMS mebrane with anchors at the edges, which has a prestress (of about 300MPa) and has 1 bar pressure gradient between the two sides ( pressure applied on the front...
View Articlehow to show the equation of the physics built by physics builder
I followed the tutorial to build a Thermoelectric Effect Physics. Everything is fine. I also built a instance example based on this physics. I then checked the equation of the physics trying to see how...
View ArticleMoving Mesh (ALE) bug?
Hello,This has happened to me several times recently using COMSOL 5.5. Whenever I add a Moving Mesh (ALE) physics to a model with an MFH physics, for example, the mesh doesn't move at all. I can see...
View ArticleComplex permittivity
I am trying to modeled scattering of layered sphere. For material modeled of one of these layered i should define permittivity as a complex value. So i tried to difined 'er' and 'ei' and created...
View ArticleColor Expression in Particle Tracing
Hi,I am using the particle tracer module to analyze the axial mixing performance of a static mixer. Particles are being injected at the inlet at t=0, 0.1, 0.2, ... 0.8. During post processing results,...
View ArticleIsolation of the heat flux of a geometry at a certain point in time
Hello everyone,I would like to simulate the heat flow of a laser beam during laser drilling in Comsol. However, I currently have problems with the simulation of material ablation. I have already dealt...
View ArticleSimulating rubber piercing in COMSOL
Hello,I am trying to simulate penetration of a rubber membrane by a solid needle. This needs material failure to be simulated. Basically when the stress in a particular element in the rubber domain...
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Converting a 2D plot into a 1D plot by taking the average
Hi,After running my simulation I have a plot like the one attached as a picture. I want to convert this 2D plot into a 1D plot by taking the average in the y direction. For example lets say that my...
View ArticleFrequency analysis of shorted ring of 10 turns
Is there any way to give a shorted ring of 10 turns an ac current of 1A , freq=10khz?I tried with helix of 10 turns, but i cannot short it.Kindly help
View ArticleCopuling Electric field and Velocity filed in PARTICLE TRACING
Hello! I have a problem with the Particle tracing for fluid flow package (ver. 5.4). I want my particles are affected by the Drag force and also by the sourrounding electric field. So I add to my...
View ArticleGeometry Sequence Rectangular Oven
Hello ! I want to model a rectangular 3D oven . I want to put 4 cylindrical inlet and 4 cylindrical outlet on the same face ! but I don't know what is the geometry sequence to do it !!!!!! Thanks in...
View ArticleFailed to evaluate variable.
Hello,I am simulating a custom supersonic air-to-air ejector. I am using the High Mach Number Flow interface. I am receiving errors and was wondering if anyone can help me solve these errors? Thank you...
View ArticleDispersion sheets for 2D PhC
Hi looking for a reliable way to get dispersion sheets and isofrequency contours for 2D photonic crystals. so far the eigensolver has been finding eigenvalues which do not give the 2D sheet version of...
View ArticlePrescribed Displacement in Frequency Domain Study
Dear All,I hope you are doing well and safe.I have a beam fixed from one end and experiencing a harmonic displacement excitation as: y (t) = A sin (wt) [Figure 1 is attached]. As peer the software...
View ArticleHow to calculate wall shear stress and total shear stress from velocity...
Could you please elaborate on how to calculate wall shear stress in COMSOL. I am able to determine the velocity. However, I do not know how to proceed further to simulate wall shear stress in my...
View Articlehow to set a if condition in chemical reaction flow?
Hi,This is a starter of COMSOL.I'm calculating a chemical recation with the solution flowing through a thick porous media in one dimention x.I want to set a condition to define: only when the flow...
View Article[HELP NEEDED] Using COMSOL to simulate magnetic levitation in superconductors.
First of all, I apologize for the clickbait-y title.I'm a high school student and I'm doing a research experiment on superconductor levitations models like the one in maglev trains. I want to see how...
View Articletime dependent vibration analysis problem
I was trying to simulate a impact hammer strike a aluminum plate and find the resonance frequency of the plate based on the vibration response from the plate. Right now, i just have a time dependent...
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