model shrinkage of meat due to dehydration
I'd like to model shrinkage of meat due to dehydration induced from a heat source on the inside of the structure. Solving for water concentration and contraction relative to temp/time. Ideally a moving...
View Article3D Nanosecond Pulsed laser simulation
i am am very new to comsol, i already did the geometry of my problem, i am now on my way to add physics. i want to simulate the effect of the pulsed laser heating on a material, i completely have no...
View ArticleProblems with Swept Meshing
Hi, I am new to Comsol and know very little about different features of the software. I am interested in finding the Eigen frquencies of a layered resonator (using a 3D object)). The resonator has a...
View ArticleLaser Drilling on silicon carbide
I am trying to simulate material removal during percussion laser drilling. The laser(Heat) source must move along the depth of the hole as the material is removed. The material needs to be removed as...
View ArticleFluid Flow in a Tube around a radially growing/shrinking cylinder
Good Morning, I guess I have a rather simple problem, but am not sure wether or not I am able to implement it at all and how exactly to do it. So I present you the problem and my solution afterwards. I...
View Articlemeshing metals intelligently in rf problems
From what I’ve been able to figure out, COMSOL doesn’t really know how to mesh bulk metals (where the minimum dimensions are much greater than the rf skin depth) intelligently. There is no rf field...
View ArticleMagnetic Field of a Multi Layer solenoid
Hello Everyone, I have no experience in using COMSOl. My professor wants me to run an example project in this software and I have a few specific questions. The problem statement is: I have a multi...
View Articlemodelling of membrane deformation and microvalves
Hi all, I recently built a PDMS microvalves, which is constituted by a thin membrane layer on top and a thick semicircular microwell at the bottom. I want simulate the deformation of membrane under...
View ArticleMeshing introduced spiky edges??
Hi all, I have a model that is built with the "compose" feature. Basically it is a square pad with two co-axial cylinders in the center, except that the front and back surfaces of the pad is curved...
View Articlecardiovascular stent crimping (and expansion)
Hi, I'm working on simulating: 1. the expansion of a cardiovascular stent and 2. the crimping of the same stent from its expanded to its delivery configuration. I've been using as a starting point the...
View ArticleSimulating strain due to lattice mismatch
Hello, I'm trying to simulate the strain that is developed due to lattice mismatch in a core/shell structure, where a shell of one material is epitaxially grown on a sphere of another material, with a...
View ArticleSetting pressure
I want to study flow in pipe I want to set v = 0.05 m/s AND p = 5 atmat the inlet How to set them both? I mean, under laminar flow -> inlet -> boundary conditions I can choose one or the other,...
View ArticleSolving a coupled system of convection-diffusion equation
Hi all, I am having trouble solving two coupled pdes, its described below I have a 2d system (square) and from the top boundary a nutrient (C) flows in to the square. I have set the concentration S=S0...
View ArticleVery big difference in the results between direct and iterative solvers.
Hello, I am trying to solve a 3D Model using the MEF physics in the frequency Domain. With a rather coarse mesh I am able to solve the model (DoF~1e6) with the direct solver (PARDISO) and the global...
View Articleconcentrated species transport with moving mesh
Hi everyone, I am dealing with a model of binary liquid to evaporate. I use the concentrated species transport to simulate the concentration field of two components in liquid as well as a moving mesh...
View ArticleNegative transmittance in comsol
Hello everyone I am simulating a model for periodic silver sphere for in-plane and out-plane polarization. But when i am plotting the transmittance in case of in-polarization with angle of incident 50...
View ArticleImporting Mimics geometry/mesh into COMSOL
Hello, Has anyone here successfully used Mimics to import a mesh or geometry into COMSOL? I would like to define a few different domains using Mimics then import them to COMSOL for an FSI study. Right...
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Singuarity error and mesh size
Hi I have a pde based model where It is a 1d problem which simplifies it to an extent. when I try to run it at coarser mesh sizes I get an error saying may have reached a singularity. When the mesh I...
View ArticleMoving mesh during electrodeposition
Hello, I'm simulating the electrodeposition of nickel (secondary interface, 3D model) with COMSOL 5.1 Since the deposit thickness becomes pretty high, I would like the simulation takes the new surface...
View ArticleHow can i generated DEP force and electric field between two electrode using...
hi, How can i generated DEP force and electric field between two electrode using comsol 4.4?? i already done my design (electrode desing) in 2D...which module should i use electrostatic(es) or electric...
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