Spiral Coil
Hi, I am trying to simulate a spiral flat coil. The input is the current I define while I would like to see the magnetic flux density generated. I made three models in the same way, but the dimensions...
View ArticleApplying boundary load over specified length
Hi guys, I have applied a force over an elastic domain to cause deformation. However, I do not want the force to be applied over the whole domain. Rather, I want to only apply the force over the first...
View ArticlePressure and shear waves in a solid, induced by waves in a fluid
Hi, I'm using the 'Acoustic-Solid Interaction, Transient' interface from the acoustics module to investigate pressure and shear waves induced in a metal structure, caused by sound waves in water that...
View ArticleDo we have comsol model that simulates placement of barriers in windings -...
Hi, I am looking out a design model that talks about optimal placement of barriers in windings of a power transformer to design the oil flow through the discs. Wanted to know how to simulate the oil...
View ArticleSize Limitation of the probe table?
It seems there is a size limitation of the probe table to 9999 time steps/data lines. The contents is treated like FIFO, i.e. the time steps computed first are replaced by later time steps. Is that a...
View ArticleData format of exported data adjustable?
Is the data format of the exported data adjustable? I have calculated two integral values per time step. I would like to have data exported in a format one line per time step with data in a row....
View ArticleEnergy Harvesting through vibratuions
How can we create spider geometry in comsol 4.2b.
View Article"Java exception" problem during multiple iterations in Livelink for MATLAB
Hi everyone, this forum is great and it helped a lot to grow in COMSOL world. Anyway, now i am trying to calculate/simulate a phase growth process considering the mass transfer through the interfaces,...
View ArticleHow to define varying material property along the length of the material
Hi, I am new a new comsol user. I want to define a material property which will change along the length of the material. say, E=a*X+b. where, E is the stiffness of the material, a & b are...
View ArticlePlotting local surface integration along a line
Hello, I have a fluid flow model in a channel that has a rather complex geometry and cannot be sliced up. I'm trying to extricate local flow rates numbers (for the sake of averaging) from along this...
View ArticleHow to define "Directional Spectral Emissivity" in COMSOL? (Thermal Radiation)
Hi, I need to define "Directional Spectral Emissivity"; which is the emissivity value as a function of angle and frequency. Is that possible in COMSOL? Thank you.
View ArticleConvergence error
I am repeatedly getting an error that the solution is not converging. This is more prominent near the resonant frequency. Can you help me? I am using solid mechanics and conducting frequency domain...
View Articlecapture the value of a variable at some specific time step
How can we capture the value of a variable at some specific time step to conserve it for later computation. How do we call the variable lets say temperature at the time t=100sec ?
View ArticleModelling the stress intensity factor as a function of time
I am trying to use COMSOL for my project to model the stress intensity factor as a function of time for a center crack plate with an applied thermal stress.
View ArticleUsing a MATLAB function that returns an array as input for a variable in COMSOL
Hi, I have a MATLAB function written that returns an array. I'm trying to use this array for a variable in COMSOL. The MATLAB function calculates a distributed force that is a function of length and...
View ArticleCrevice corrosion modelling 4.2a/4.3 a
Hello , I am trying to model a crevice corrosion from Sharland et al paper with six species(Fe, FeOH, H , OH , Na, Cl). I am providing Fe oxidation flux and H reduction flux at crevice tip and water...
View ArticleVisualization Transparency
Does anyone know how to control transparency of a particular plot? For instance, I would like to show what is happening in the contact area of two bodies in contact, while simultaneously showing the...
View ArticleFrequency domain - mechanical
Hi, I am an electronics student and am trying to simulate the mechanics of a square plate. My plate has the 4 side faces fixed and a uniform distributed load on one of the larger faces. The stress and...
View ArticleAC/DC rmm module - bug report
In the 2D generator tutorial, I changed the prescribed rotational velocity from 'rpm' to 'rpm*tri1(t[1/s])'. tri is a triangle function. Therefore the rotation speed should first increase, then...
View ArticleLarge mesh with Beam Envelopes module
Dear all, probably I'm missing something about the use of the Electromagnetic Waves, Beam Envelopes; as I understand well, this module can be used to simulate a long waveguide (some mm or cm long) but...
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