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Problem with meshing in a microfluidic channel.
Hey all, I am trying to simulate the deflection of a half-sphere, with ALE Fluid-structure interaction, stuck on the bottom surface of a microfluidic channel (height = 50 um and width = 300 um) and it...
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Model conversion from 2d axi to regular 2d
Dear community, I want to convert a 2d axisymmetric model into a regular 2d model. Is that possible or do I need to setup the model again in 2d? Many thanks, Marcel
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Slow matlab livelink with comsol 4.3a
Hi everyone I have a Comsol 4.3a model which takes about 4½ minutes to run. I would like to run it through MatLab to do sweeps over several parameters and only save a few results from each run. However...
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Harmonic Load
Hey, I'm new to COMSOL and I have a few questions about it. I'd like to do a Frequency Response Analysis of a structure with a harmonic load ''shaking'' it with a pre-determined force and frequency ,...
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Electrical resistance in a structure
hello everybody, I need to have a simulation of electrical potential in 1D beam elements in a structure. I want to give potential to one point of the model and ground to another point and observe the...
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Output pressure of the transducer in frequency domain
Hello,everyone I'm doing research in capacitive ultrasonic transducer. I use the electromechanic model and want to observe the output pressure in the frequency domain. Now I can add the biased voltage...
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Gravity volume force in non-isothermal laminar flow
Hello I'm trying to simulate non-isothermal laminar flow through a tube, and I use 2D-axisymmetrical to decrease the computing time. The model works fine with laminar flow and heat transfer, but when I...
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Electric field between electrodes
Hello I am trying to make a very simple model to calculate electric field between two electrodes in water facing each other(using electrostatics module). I set for the electrode boundaries opposite...
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Simulation of leakage flux from transformer
Hello. I've tried to simulate a quantity of leakage flux from transformer by using COMSOL 4.3a. To do this, I made a simple transformer model with LiveLink for AutoCAD.(I want to attach mph file, but...
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bistatic radar cross section
Hello! I studied the given tutorial related to radar cross section. Unfortunately, these only provides how to plot monostatic RCS. I tried to use parametric sweep, but it wasn't successful. Can I get a...
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Magntic field analyses using current excitation
Hello, I have started to use Comsol this week and have done some examples, but when I try to simulate my model I hit some set backs. The model has 16 electromagnetic poles with a pair of coils in...
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Thermal stress analysis
Hi sir, i have analysed thermal stress by passing the laser beam on rectangular plate (through structural mechanics module).i used stainless steel temp dependent material properties to my simulation. i...
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Resistivity change vs deflection
dear all, How to plot the resistivity change of a simple piezoresistor vs deflection of a membrane in a MEMS sensor? thanks
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Fluid flow channel in cantilever beam
Hello, My model is the following: a cantilever beam has one longitudinal channel containing a fluid flow. My goal is to find the effects of the fluid flow (viscosity, velocity, size of the channel) on...
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Is the Comsol Model Class a Handle Class in Matlab? Can/should I pass it as...
Hey there, I'm new to Comsol and I'm developing my first Matlab application using LiveLink. As I understand the object oriented concept in Matlab, there are two types of classes. Value Classes and...
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Regarding Hand Tool in work plane
Hello, I am trying to design a complex and very minute pattern in micro-meter scale on a work plane but I am not able to figure out how to move the plane while working, I need to zoom in and out again...
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3-D Modelling , Filling an open gap
Good Afternoon, I'm building a damper that has a hollow casing and a rubber-ish inside. This rubber is applied inside the case trough a direct injection. I'd like to know if I can model the casing (...
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Convergence behaviour in a stationary solver
Dear Comsol gurus, I have been dealing with a CFD/transport of diluted species (TDS) simulation for a while and I was hoping you could bring some light to the subject. I am simulating a flow in a micro...
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"Reinitializing GUI" for a long time
Hi, when I solve a PDE, it takes a lot of time. I closed the programme with task manager of windows. When I reopen the file, the programme is "reinitializing GUI" . I wait for almost an hour and...
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Sessile droplet
I want to put a sessile droplet inside a channel. How to create a droplet of a specific material ? and how do I choose the model ? As a reference I was wondering about the model in one the Paper - A...
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