Time Dependent temperature variation on Aluminium due to scanning of Laser of...
Hi, I have just joined National Tsing Hua Huniversity as a PhD scholar. I am new to comsol. I am using comsol 5.3. I have been given a problem which is based on time dependednt heat transfer simulation...
View ArticleCartesian Product Of Two Shapes.
I know how to find the Cartesian product of two single sets (All sets with elements of both), however how do you find the product of two fully graphed shapes? That is, the result could be for example a...
View ArticleEuler-euler Model and chemical reaction
When I used the Euler-euler model under the multiphase flow module , I found that it could not be directly coupled to the chemical reaction. What should I do to add a reaction to the Euler-euler model?
View ArticleFeature request: reduce directory size by deleting solutions and meshes
I would find it so useful to have a script that sequentially loads all the mph files in a directory, deletes the solution data and the mesh data, and saves back the results. I waste lots of disk space...
View ArticleCoupling of PDES
I'm looking to solve a series of PDEs in COMSOL, but I'm not sure how to couple the four of them. There are four dependent variables. How do I couple them together so that I can use dependent variables...
View ArticleIon exchange membrane
I am currently working on a case where I want to make ions in a liquid pass through an ion exchange membrane into other chambers under the action of an electric field. How should this process be...
View ArticleTime dependent study crashes at missing thermal resistance parameter
Hey guys,i encountered a weird problem regarding a time dependent study solving heat transfer in terms of thermal resistance intersections. First of all, im working with Comsol 5.3a and a stationary...
View ArticleMcAfee initiation key not working
McAfee is one of the main names in web security perceived far and wide. A great many clients and associations utilize the McAfee hostile to infection programming to shield their framework from online...
View ArticleElectrical resistance strain gauge model
Hi, I would like to ask if anyone has already done a model of an electrical resistance strain gauge. I've tried to model it and to apply a force in order to strain the substrate below the strain gauge....
View ArticlePlot electric field for a grating structure with finite periods
Hi all,I am new to COMSOL and just studied the Plasmonic Wire Grating tutorial using Wave Optics model.I want to generate a figure with many periodic cells instead of just one, but can't find...
View ArticleImporting Well Locations with Specified Contaminant Concentration for Model...
Hello,I am using transport of diluted species in porous media to simulate a groundwater contamination plume. I am trying to import a.txt file containing local coordinates of monitoring well locations...
View ArticleFluid-Structure Interaction
I used two physics interfaces including FSI and Piezoelectric devices for my project. There is an interaction between fluid and the a part of piezoelectric devices. For comsol version 5.3a, the...
View ArticleHelp to describe the equations
Can anyone help with a detailed description of attached below equations (Solid Mechanics and Linear Elastic Material), because Comsol's help is not very useful.I will be glad to any links with help or...
View Articleinitialize timestep and Temperature to use prev()
Hello, to calculate the current cooling rate I use the formula (T-prev(T,1))/(t-prev(t,1)). However. In the first step I cannot use the prev() command, as there are no values before the first step. Can...
View ArticleHistory can not be erased, comsol complains about wrong number of func arguments
Hello, I had a function x1 with 1 argument. I have then changed this function to have 3 arguments, and updated every node in the geometry tree which used this function. COMSOL still keeps complaining...
View ArticleAbsorption coefficient of two phase
I am currently working on a case where I want to study the absorption coefficient of solid particles in water. How should this process be simulated? Welcome everyone to guide and communicate. Thank you...
View ArticleCopper plate influence for permanent magnetic field
There is a small copper plate in permanent magnetic field, which can rotate a little, and due to their eddy currents it can make some influence for initial magnetic field. My main issue is to find that...
View ArticleLayered Composite Structures for piezoelectric materials
Hello all,I am very new to COMSOL and this might be a simple question. I am trying to simulate the piezoelectric voltage-charge behaviour of a PZT stack. Therefore, it has a alternative layered...
View ArticleDiagonal or lumped mass matrix
Hi, For time dependent problems, is there any way to choose diagonal or lumped mass matrix in comsol?
View ArticleImport mph file generated on a different student license?
Hello, I'm considering returning to school to pursue a PhD. I'm not sure if I'm able to purchase Comsol through the university.If I am able to do so, does the software allow me import any files created...
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