Joule heating in a conductor
I'd like to model a cable covered with a insulation. The current of 10A is flowing through the cable. I do not have any parts grounded. I used the "Terminal" option as suggested in the COMSOL example...
View Articleflow rule in plasticity
I can not find how to define flow rule in plasticity module. Can user define flow rule in comsol? How to deal flow rule in comsol? Associated or Nonassociated? Anyone can give some information about...
View Articlehow to plot velocity profile within a pipe elbow
Hi, Can anyone please guide me as to how to do I plot the velocity profile across the geometry which consists of two pipes and a 90 degree bend in between them. I have attached my model for reference...
View Articlechange the height of the legend bar
Hello, I wanna plot my result. The problem I face is that the domain is small,but the legend bar in the plot in not suitable.any idea how to make it small and fit to colorful height? (Please open the...
View ArticleIntegrating two RF application modes
I want to simulate a 3D waveguide geometry using 3D transient wave propagation mode of RF module. The input field at one of the far cross-sections is an eigen-mode of the waveguide. I create a...
View ArticleMeshing of boundary layers wont work
I am trying to mesh (and, eventually, compute) a model of a rectangular duct connected to a circular hole, where the duct and the lower part of the hole are filled with water, the upper part of the...
View Article"Internal error in boundary respecting." and "Out of memory during assembly."
Dear All I have two errors in my microfluidic models about "Internal error in boundary respecting." and "Out of memory during assembly.". At first I tried to simulate the flow of the overall 3D...
View ArticleJoules heating.
Hello. I have made a model of Primary terminal of a Transformer carrying a current of 300 A . I wanted to find out the heating in the Top chamber of the transformer where the terminal is connected....
View ArticleProblems with boundary layer meshing
I am trying to mesh a k-epsilon model and cannot generate a boundary layer mesh. My model has a very narrow region and I expect that that is the problem area. The error I get most often is: Could not...
View ArticleSimulation of terahertz radiation from nano-antenna
I am new to COMSOL and I wish to simulate the radiation ( Electric field) in terahertz domain from a nano-antenna structure which consists of two electrodes separated by a 25um gap. The electrodes have...
View Articlefind the coordinates of a point in which the magnitude of derived variable at...
Hello, I am working on a 2D transient problem. I have the results and want to post processing them. I want to plot my results like this: Detect the minimum of a derived variable all over the domain at...
View ArticlePacked bed mean field model
Hi, I am trying to solve the time-dependent concentration profile in a packed bed using the mean field theory rather than the whole CFD definition of the problem. The mass giving rise to the...
View ArticleLiveLink for CAD - can it handle multiple parts?
Hi All, Can LiveLink for various CAD products handle multiple parts or assemblies? All the documentation/videos I have seen on LiveLink show it being used with a single part. Although using a CAD...
View ArticleProblem with heat transfert in lava
Hello everyone, I posted a topic here because I encounter a problem with Comsol. Indeed, I try to modelize a lava flow, but I have a problem to fix the temperature of middle flow as you can see on this...
View ArticleGet results while solving
I am doing a flow problem with turbulent flow thorugh a pipe. I would like to get results while solving, that is the velocity plot. I have checked the box in the study note to get results while solving...
View ArticleAcoustic S Parameter Calculation
Hi, I am trying to obtain the variation of the refractive index(n) and impedance (Z) for a unit cell of a periodic structure. For this, I am using the Pressure Acoustics, Frequency Domain module in...
View ArticleDisplay mesh elements on profiles
Hello, I'm using Comsol with the solid mechanics module. From my system, I get strain profiles along cut planes, which displays a smooth rainbow of colors. I'd like to know how I could display the...
View ArticlePlot scattered electric field incident on a particular side of a given line
Hi All, I'm trying to run a simulation of an electromagnetic wave scattering. This is what my geometry is like: A 2-D rectangular domain is aligned with its longer side lying vertically. This rectangle...
View ArticleI really need help with this question! Please
I am soooo stuck with how to draw 2D cut lines from (b) in this solution set. I know its probably something really simple but its driving me crazy. I really don't know how to define the zeta cut lines...
View ArticleMicrowave heating module - Microwave Oven, time varying frequency source
Dear all, I'm almost new in comsol and I'm not very practice with this software. I'm training with the Microwave Heating module, in particular I'm evaluating the behavior of the microwave oven...
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