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Assembling different imported solidworks files into COMSOL
Hi, Wondering how we are able to assemble different imported parts in COMSOL in a fashionable manner? Thanks
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Passing material properties to other material properties
Hi All, I was wondering if anyone knew the best way to pass a material property to another material property during a simulation. In this case, I am using the refractive index as a 'flag' for a...
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boundary selection in emw
Can any one tell me why the boundaries shown in the attached image are not getting selected in emw physics I have also attached the .mph file.
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Heat transfer problem (varying temperature with time)
Hallo, I am new in COMSOL and trying to run a simple heat transfer simulation in COMSOL (heat transfer in solid module). I want to simulate a time dependent temperature distribution for a simple...
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Complex Conditionals?
I'd like to change some material properties mid-simulation, and I feel the best way to do this is through conditional statements that depend on time. Is there a way to add a complex conditional...
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Axis formatting
Dear users, greetings. I would like to know how to produce graphs, where the both x- and y-axis are numerically consistent. For instance, on y-axis I have the following numbers displayed: 0.18, 0.2,...
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Change Geometry with time
Hello, i wonder if i can change the geometry with time? i want to change radius of cylinder with certain time intervals. My process time is 40 second and i want to change radius of cylinder 4 times...
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3D model with multiturn coils in 1/4 symmetry
hallo, i simulate a 3D model with ironcore and coil using 1/4 symmetry. My study is frequency domain at 30kHz. I have defined the coil by numeric multiturn coils. But the solution is wrong, cause the...
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Getting simulation results at certain points
Hello, I am trying to get the results of my simulation only at certain points in my model. I started with using point probes, which returns me a table with all values I want and I can also export them....
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One Study and multiple solution sets
Hello, I'm trying to do something like a parametric study but instead of doing a parametric study I want to run a transient simulation multiple times and store the solution in different study/solution...
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Surface to Surface Radiation Heat Transfer coupled with Electric Currents Module
I am trying to model heat generated from a coil within a volume of air. Currently, I am getting an error saying that I have faulty initial conditions. The coil has 10.6V running through it, which...
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Can't extrude 2D geometry - COMSOL 5.1
Hello. I am currently working on a project where I need to analyse the heatflow of a heating/cooling system. Last time I worked with COMSOL was when edition 4.3a was the newest, which gives me some...
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Values of variables not solved for: ...
Hi all! I have two physics, both of them are time-dependet study. My question: If I want to couple these two physics together , there are two options: Values of variables not solved for:...
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Reduce Degree of Freedom antenna array
Hello, I am using RF module and have a created a model of antenna array, with which I would like to observe scattering of EM waves when penetrating dielectric material (permittivity 50-70) The antenna...
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Pulse train
hi I want to make a pulse train of 50 pulses. My one pulse last for 20ns . So as per my calculation i need a pulse after every .0204s. I am using analytic function for doing that. But when I enter .02...
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Couple the Coefficient Form PDE and Structural Mechanics modules
Hi, How can we couple the "Coefficient Form PDE" and the "structural mechanics" modules in COMSOL. The multiphysics node is not activate. Thank you, Bhagya
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Cut domains
Hi, I want to know if it is possible to cut one domain into simpler parts, and how to do it, because i dont have the CAD import module in my 5.0 version of COMSOL, and I only can import in STL/VRML...
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How to create a "toggle" in application builder
Hi there, I am building an application and I would like to include a control to toggle the state of filters in plots. I have created the methods using code similar to the following:...
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Tonpilz Transducer
Hi, Has any one done analysis of tonpilz transducer using comsol? If so, how is this matching with the fabricated transducer? I tried in various versions of comsol both in 2D and 3D but didn't get good...
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Voltage Induced in a Coil by a Moving Magnet
Dear COMSOL Community, I am currently running a simulation which is almost identical to the tutorial on "Voltage Induced in a Coil by a Moving Magnet (I have attached the file for easy reference)....
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