Peak Temperature Optimization in Laser Heating
In a laser surface heating model the peak temperature achieved on the surface of the material is dependent on the material properties and on the laser parameters. For a given material (Cp, , k) beam...
View Articlefrequency domain study with external circuit
Hi The comsol model gallery includes a frequency domain model of a capacitor. I added an external circuit coupled to the capacitor and a time dependent study runs OK (as shown in a separate gallery...
View ArticleOrientation of legends when exporting as .eps
Hello, For some mysterious reason, the legends are turned "upside down" when I try to export a 1D plot as .eps as compared to when I save the exact same picture in any bitmap format. By upside down I...
View ArticleCOMSOL 4, TE and TM modes
In previous version of COMSOL (e.g. COMSOL 3.5) it is quite simple to choose TE or TM modes analysis. In the COMSOL 3.5, in the model navigator I can choose "In-Plane waves" or "Perpendicular waves"...
View ArticleUsing Google Sketchup for designing geometry
Has anyone found a way to export geometry from Sketchup to COMSOL? I cannot seem to find a format that works in practice. Are there any special considerations to make when converting/exporting the...
View ArticleSome problem about Numeric of Port in RF module
I learned with the "waveguide_adapter" in model liberary, so the problem below is based on it. FIrst, I don't know the meaning of "search for modes around" in setting of "Boundary Mode Analysis". In...
View ArticleExporting plot data in Comsol 4.2
I've having issues with the being able to properly export plot data with sufficient resolution. In 3.5, I was able to create a and specify the range and number of data points within that line for...
View ArticleTransient simulation output doesn't match input
Hi I'm simulating a 2mm radius magnetic loop excited by a transient current and surrounded by a 10cm air sphere, in time dependent study. I've interpolated a gaussian current input from several points...
View ArticleAxial flux permanent magnet generator
Hi Dr. Ivar/All, Iam trying to simulate the axial flux permanent magnet generator with two rotor and a coreless stator sandwiched between two rotor. Permanent Magnets are attached on inner surface of...
View ArticleLaminated core
Hello everyone, I’m interested in simulating the induction heating of an object that occurs with the help of a rectangular coil that is placed above it. The problem that I’m facing is that I want to...
View Articleelectric currents model
Hallo, i have a question about the electric currents model. My simulation is 2D axisymmetric in frequency domain. The geometry is a solenoid which has two turns. As you know, if the current flows...
View ArticleHow to create a spiral inductor in COMSOL
Hi, I am a new learner of COMSOL. I would like to learn how to create 5 uH spiral inductor. I have researched on website but I could not find the tutorial step by step. I saw only in AC/DC Library with...
View ArticleLicense error: -38
Hello, Whenever I try to run COMSOL 4.3, I get this error : License error: -38 User/host on EXCLUDE list for product User/host on EXCLUDE list for feature Feature: CADIMPORT license path: C;\Program...
View ArticleMultiple MEMS devices in parallel using electrical circuit physics ?
Hello, Here is my model: I am simulating a micro piezoelectric systems. The simulation is complex and can take some time. Then, I use the electrical circuit physics to simulate my systems with an...
View Articlehow to simulate the return loss (S11) of Quartz Crystal Mcrobalance
I am trying to use comsol for simulating the reflection loss (S11) of QCM. My question is since the QCM is one port acoustic wave sensor, how to determine the input and output?
View ArticleJoule Heating- 3D Rectangular Bar
I have 3D model of a rectangular Copper bar with 3 rods attached to it. These 3 rods provide electric energy to heat the rod. I am not sure what is incorrect with the case set-up, asI have run a very...
View ArticleSelecting particular effective index for plotting
Hi everybody, In Mode analysis if number of modes=6, then I am getting 6 effective indices for 6 frequencies.I want to plot 2 effective indices out of 6 with corresponding frequencies in 1D plot...
View Articleparticle tracing module: size distribution function
Hello, I would like to simulate the trajectoires of polydisperse particles in a gas using the "Particle Tracing Module". In order to simulate particles of different sizes, I created an "Interpolation...
View ArticlePost-process two different solutions from a Parametric Sweep...
Hello, I am using COMSOL 4.1 and I am facing a conceptually simple problem with no luck. Basically I have a simple 2D Eigenvalue Problem which gives me 20 eigenvalues (and 20 eigenmodes) and a...
View ArticleMeshing Air
I'm new to 3D COMSOL and I have the geometry for a chamber that will have air running through it while it performs its function. I am easily able to mesh the geometry, but I'm having problems finding a...
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