how to make sure the soil is saturated
I am using poroelasticity module, how to make sure the porous media is saturated? is there any configuration to attain the totally saturated condition for porous media? thanks
View ArticleSpatially graded index / graded material properties
Hi, can anyone of you tell me if it is possible to define a graded index in comsol? It seems as if sth. like this has been done in www.comsol.se/academic/papers/2871/ But how? Is it simply possible to...
View ArticleGeometric nonlinearity
Hi, I have used structural mechanics to simulate an indenting sphere on a half space polymer film. I am changing the elastic modulus of the polymer film to go from hard material to soft material. I am...
View ArticleHow to couple T variables in bluk and thin film
We are modeling heat transfer in solids that contain a thin film within the bulk. So we have "Heat Transfer in Solids" for the bulk, and "Thin Conductive Shell" for the thin film. The default variable...
View ArticleModeling Jet flow of Water in Air Atmosphere
Dear All I am modeling the flow of jet (say water or similar liquid) in an atmosphere of air. The problem is very similar to the one in the model library (the inkjet example). However, my domain...
View ArticlePostprocessing in cyclindrical coordinates
I am doing a plane strain analysis of a pipe with a crack in it. I would like to get the stress components in the cyclindridcal coordinate system (radial, hoop stress) rather than in the cartesian...
View ArticleContinuing Modeling Issues with 2D & 3D piezoelectric SAW model
Hello all, I’m in desperate need of help with my model. The initial model setup is a 2D cross-sectional SAW device where I have silicon, a metallic electrode as my ground, a buffer layer, a...
View ArticleImporting real data heat flux boundary condition to COMSOL
Hello all, I'm working on a 2D transient heat transfer project and I can't figure out how to import real data for heat flux vs.time in COMSOL. It only allow me to input a fix value or function, not...
View ArticleStresses built up in a rotating disk
I am trying to analyze the stresses built up in in rotating disk. This disk is not subjected to any external loading. Only forces applied is centrifugal forces due to rotation. When I try to model the...
View Articlehow to draw a rectangle on a 3D cylinder's surface ?
hey ! we are working on the simulation of MEMS Based pressure sensor for biomedical applications. We are not able to create the heater element which will heat the liquid inside the cylinder. Kindly...
View Articlemode analysis for 2D slab waveguide
Hi, Everyone, I am new for using comsol, and firstly I built a easy model to learn. It is a 2D slab waveguide (see attached ). By mode analysis, I found the effective mode index obtained by comsol is...
View Article2D hinge in compliant mechanism
Hi all, I am trying to simulate a compliant mechanism as seen in the attached picture but I am having difficulties simulating the rotating pin in 2D. As see in the picture the structure is composed of...
View ArticleNot able to properly use remesh feature in multiphysics stationary simulation
Hi, I have simulated a steel specimen that becomes deformed due to bending. For that, I use the solid mechanics interface in a stationary study. Parametrizing the magnitude of bending also works....
View Articlestress corrosion cracking
Is it possible to be stress corrosion cracking? The steel structure has tensile stresses and would be susceptible to stress corrosion cracking. Thanks -- Arthur Rupel
View ArticleEddy current probe simulation
Hi all, I'm new in COMSOL right now I'm doing eddy current crack signal processing. what I want to do is to use COMSOL to simulate crack signal then compare with actual experiment results. but now I...
View ArticleNo streamline is shown when "Magnitude controlled" streamline plotting
Hi, I've got something I can't figure out during a simple laminar flow simulation with COMSOL 4.3, so I ask anyone's help for this problem. The problem is that "sometimes" I cannot see any streamline...
View ArticleLocal maxima of solution
Dear all, I use comsol to solving a certain EDP problem (Laplace equation for exemple in crown domain: 2D or 3D domain). The solution is noted 'u'. I want to calculate the all local maxima of the...
View ArticleHow different are these?
Hi, i am a student in republic of korea. My model is to observe how E-field enhancement is made by constructing nano gold patterns on a slica galss, applying incident laser from z-axis. However, I have...
View ArticleHeat Transfer in Soils
Hi, I am a comsol user and I want to have a 2d axisymmetric model. In my model, I have a soil sample that I put a steel bar in the soil. I want to heat the steel bar with a constant temperature 500(k)...
View ArticleHeat conduction in solids - temperature dependent heat transfer coefficient
Hi, I would like to solve a simple heat conduction in solids problem with a temperature-dependent heat transfer coefficient at one of the boundaries h(T) = 1000*(300/T)^1.3 However, the result computed...
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