Damage Modelling
HiI am currently trying to model hydraulic fracture propagation within granite using an isotropic scalar damage law. I am basing the law I am using off of...
View Articledensity change due to deformation
I have multiple custom PDE's coupled that are modeling wood pyrolysis. They are all solving for the densities of the constituents of the pyrolyzing material. The equations them selves are basically...
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Treatment of source term on the boundary
Hello folks. I would like to solve a system of two PDEs using Equation Based-modeling module of COMSOL in Coefficient Form PDE. The equation (with source term on boundary) to solve is: So, my question...
View ArticlePlasma Module - Species inlet/outflow conditions
Going through the example COMSOL model on thermal plasma with flow and heat transfer (https://www.comsol.com/model/thermal-plasma-8658), there is no inlet boundary condition (in the plasma module,...
View ArticleMultiphase CFD Problem
Hello all!I am having difficulty running simulations for my multi-material model.(Please see attached photos)Blue region is water.White region is air.Green mesh region is permeable PDMS.Blue arrows are...
View Articlecomsol version problem
i have version 5.6 of comsol and i am facing problem related to version. how to open file of 5.6 version into 5.5 version comsol?
View ArticleBest physic for electrophoresis
Hi There are two physics for electrophoresis: 1-Electrophoresis 2-Nernst-Einstein equation. Which is better for simulation of a new mode of electrophoresis?
View ArticleProblem to understand Frame setting in Average Function
Good Morning,I have a mechanical simulation and I need some help to understand the average frame setting.I have Average1 (aveop1) with a Spatial Frame and Average2 (aveop2) with a Material Frame. Both...
View Articlecompressed column
There's a problem card for many days. I'm based on parameterized_ concrete_ The connection form between concrete and reinforcement in beam has been made by myself. If reinforcement is added, it can...
View ArticleThermal expansion in thin films
Hello,I am trying to study the associated stresses due to thermal expansion in a layered film structure. I have set a temperature boundary of 1000degC as a bottom heating condition and used rigid...
View ArticleThe Silver-Back Reflector Results Defy Common Sense
According to the general understanding, if the 0.5 micron Ag is covered with a 5 micron thick aluminum oxide film, the film should be like a mirror, reflecting at least 90% of the sunlight (I...
View Articleexport single streamline data with the corresponding field in it
Hi all, I am looking for a way to import the electric field along a single chosen streamline (and preferably to get both on the the same file). I can generate a single streamline on its own and the...
View ArticleContact Pairs
Hello All,I am attempting to use a contact pair between two stacked blocks. I want to allow a vertical force to transmit from one block to another but not a horizontal force, thus I am looking at...
View ArticleFluid Velocity due to Structural Movement of Walls
Hi Everyone, I would like to perfom a one way FSI to find the velocity of fluid inside a 2D domain (say rectangular slot).I am using a FSI, fixed geometry interface. I want to apply a sinusoidal...
View ArticleEmission from a point dipole source
I want to simulate a dielectric dimer having a small gap. The source is a point electric dipole that will emit EM radiation. The source will be placed in the middle of the gap. This will be a 3D...
View ArticleHow does COMSOL deal with the partial derivative of the complex variable to...
When we need some user-defined variables in the physical model, such as principal stress and principal strain, they are the eigenvalues of the stress tensor and strain tensor, respectively. When...
View Article0.2 micron silver was coated with a 3 micron thick aluminum oxide film and...
According to the general understanding, this structure is equivalent to a mirror, at 0.3 to 4 microns should have a high reflectivity, this result is clearly wrong, can not find the fault! Hope someone...
View ArticleHandling multi-core simulations
Hi, I have a 32 core computer (2 processors with 16 cores each). I read on the help page that we can specify the number of cores to be used for a given simulation.My question is : If I start 2...
View ArticleMultiple Loads With Different Frequencies In Frequency Domain Study
Hi, I'm trying to evaluate the Transmission Loss on a glass panel when subjected to two different loads at the same time. In particular one is a boundary load representing an incident acoustic wave and...
View ArticleConvergence plot saved in results
I need to have Convergence plot saved in results. I red that it should be possible using Probe. What probe and what probe expression should I use?
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