Radius change in Phase Field
Hi, I am surrently working on a Three Phase simulation using the Phase Field interface in COMSOL. In the simulation, I observe a change in shape/profile of a phase. I want to plot this change in shape...
View Article[ERROR] Computed plastic multiplier is negative - Bending of shape memory...
Hello,I've a shape memory alloy wire, Flexinol, trained to bend upon heating. I'm trying to model this behavior in COMSOL Multiphysics 5.4 using the shape memory alloy material model of the nonlinear...
View ArticleMaterial>Property Group>Local Properties
Hi all,I want to parameterize my material definition. The concept of "Local Properties" seems to be a nice concept. But whatever I define in the "Local Properties" table I cannot use to compute an...
View ArticleCOMSOL linked with parameter estimation and uncertainty software PEST
The below post is related to an archived discussionI would like to draw the attention of anyone who comes across the archived thread above to a software package that links COMSOL with PEST using the...
View Articlesimulation consumes more time to complete
HelloI have found that the comsol modelling is consuming more time than usual. While I open the COMSOL it takes about 10 minutes to open a file. Similarly, to save a file too, it takes around 3-4...
View ArticleThe synthesis and decomposition of forces do not apply to dynamics in COMSOL?
Hi everyone.I have built three 2D plane strain models in COMSOL, each model was applied dynamic concentrated forces (1 MHz, last 10 microsecond), which are equivalent, at point A as shown in the figure...
View ArticleThermal expansion boundary condition : free deformation but keep in flat
Hi friends,I am building a model which is a cubic unit cell of a composite material. At the center of the unit, there is a SnO2 fiber, and the other materials of the unit is Ag. It is built to...
View Article"NaN or Inf found when solving linear system using SOR."
Hello!I was trying to compute the example:www.comsol.com/model/iron-sphere-in-a-20-khz-magnetic-field-12831 ,and I have changed the radius to 12nm. An error occurred: "- Detail: NaN or Inf found when...
View ArticleInquiry of Module in COMSOL 5.4 to solve flow of nanofluid through a...
**The below post is related to an archived discussion[start here] HelloI would like to model flow and heat transfer of nanofluid through a microchannel for a nanparticle (Al2O3) concentration of 1-5%...
View ArticleHow to assign a characteristic impedance to a material at a given frequency?
Hi,I'm doing a foam related acoustic simulation, where the foam was characterized using the poroacoustic module. And depending on the model used, some parameters of the foam needed to be provided...
View ArticleEquation based modeling.Inconsistent unit of Input
I use PDE modele and trying to solve an equation. The temperature correction factor is modelled as a piecewise function, which however shows as unexpected unit of input.How can this be solved
View ArticleMagnestrictive analysis using permanent magnets
Hi all, I am trying to analyse the behaviour of a magnetostrictive materials with two permanent magnets attached at its ends. Since there is no current flow, I have used the appropriate Physics. After...
View ArticleUsing Corrosion Module in COMSOL
Hi guys,I am new to COMSOL and trying to model corrosion behavior of AISI 4130 Steel in a chlorine environment, however it is really frustrating because I have no prior experience of modeling corrosion...
View ArticleCreate CFD mesh from CAD geometry
Hi everybody, I think that my question is a little stupid, but I do not have idea how to solve the problem. Basically, I have a CAD mesh created by SolidWorks that is similar to a heat exchange...
View ArticleHighly nonlinear model with many ODE interface?
Dear all,I developed a coupled HM model for porous media with many ODE interfaces. I found the model ran very slow. I am wondering whether these ODE interfaces contribute to the Jacobian matrix. Is it...
View ArticleHow to solve PDE in comsol
Hi comsol support team I am mani Shankar yadav research intern from IIT Ropar India. I am facing problem while solving PDE solution in comsol. be expressed by the following continuity equation: ∂nD/∂t=...
View ArticleEvaporation and rainfall infiltration boundary condition
Hi everyone,I am doing slope stability modeling that need to specify this boundary condition for the surface considering rainfall and evaporation.I can calcualted the model based on rainfall or...
View ArticleHeat transfer in assembly
Hello,I am working on a simulation of FDM using COMSOL. The geometry I've attached with this discussion is 2D geometry of a simple model which assumes the layer by layer deposition process. I would...
View ArticleBending MicroChannels
Hello,I want to simulate a bending microchannel. In the simulation i want to do a parametric swwep of the bending angle in the range(10,5,180).when creating the geometry of the channel, i used...
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