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Particle tracking with freeze condition - how to not track frozen particles?
Hi all, I have a fairly simple model consisting of purely axial, laminar flow in a rectangular channel. These simulations are in the Stokes regime, and the flow is modeled as steady state. I would like...
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"Out of memory"
Hello, I have this system - a fiber optic cable glued on a concrete beam -, which I would like to calculate with Comsol. When I use a Finer mesh (which brings c.a. 96 000 elements) everything goes...
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Electrostatics using deformed result of solid mechanics
Hi, I am new to COMSOL, using version 4.1 to simulate a flexible capacitor. The goal is to have the geometry deformed using a Solid Mechanics simulation (which I have done) then simulate the behaviour...
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Laminar inflow into a turbulent domain
I have a 3D geometry in which turbulent flow develops downstream, but the inlet to the domain is a pipe that has laminar inflow. The turbulence physics interfaces do not have a laminar inflow boundary...
View ArticleClik here to view.
Flow in a pipe with a very large aspect ratio
I'm trying to solve what should be a very simple problem as part of a larger project I'm working on. It's just laminar flow in a pipe of length 14,000 feet and radius 0.04 feet. I'm just trying to find...
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Operate with the solutions of a parametric sweep simulation
Hello I have solved a problem using the parametric sweep simulation. Now, of course, I have a result for echad parameter, now, what I want it is sum all of these results, what I do not how to do it......
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parametric sweep
hi, can we use geometry parameter like (length, width, height) in parametric sweep, i want to see how the output changes with variation in geometry
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Pyramid
I know this sound stupid but really hope someone can help me with this.. this is my first time using this software. I've been trying to draw the attached truncated pyramid. but really dont know how to...
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Rectangular input port phase shift possible bug (microwave heating)
Hi all, I'm working with the microwave heating module to simulate the heating of a load with highly non-linear material properties (varying with temperature). I have two input ports both set on ON....
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Solution isn't converging
Hello everyone, I'm having a problem with my simulation, where it isn't converging. It's a very thin plate (10 nm) of graphene, and the dimensions of it are around 0,5 um. I've made a simulation where...
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Modeling Capacitor with Electric Currents
Hi, So I am trying to model a parallel plate capacitor with a variable overlap between the plates. Going through the ACDC models in COMSOL, I don't really understand how using electric currents can be...
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Thermal Stress Evaluation without Solving Heat Transfer Physics
I am trying to generate Thermal Stress about the domain of a spherical body with a coupled 'Solid Mechanics' and 'Heat Transfer in Solids' physics. Instead of actually solving the heat transfer...
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the free vibration of the cantilever
Hi everyone: The initial displacement D=1.05mm, is placed on the end of the cantilever beam, to solve the velocity response of the beam end. First, I select space dimension 2D, and add physics Beam,...
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Thermal expansion model
I built a thermal expansion model, at temperature 700K. I want to examine the stress distritubion of the cross-section inside the expanded sample, how do I do that? Also, is there a way to visualize...
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Maxwell Stress Tensor
Hello all, I'm new to Comsol and Im having a little difficulty getting my head around how the Maxwell Stress Tensor operates. I understand its operation when applied to parallel wires (Like in the...
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Particle tracking with freeze condition - how to not track frozen particles?
Hi all, I have a fairly simple model consisting of purely axial, laminar flow in a rectangular channel. These simulations are in the Stokes regime, and the flow is modeled as steady state. I would like...
View ArticleClik here to view.
"Out of memory"
Hello, I have this system - a fiber optic cable glued on a concrete beam -, which I would like to calculate with Comsol. When I use a Finer mesh (which brings c.a. 96 000 elements) everything goes...
View ArticleClik here to view.
Electrostatics using deformed result of solid mechanics
Hi, I am new to COMSOL, using version 4.1 to simulate a flexible capacitor. The goal is to have the geometry deformed using a Solid Mechanics simulation (which I have done) then simulate the behaviour...
View ArticleClik here to view.
Laminar inflow into a turbulent domain
I have a 3D geometry in which turbulent flow develops downstream, but the inlet to the domain is a pipe that has laminar inflow. The turbulence physics interfaces do not have a laminar inflow boundary...
View ArticleClik here to view.
Flow in a pipe with a very large aspect ratio
I'm trying to solve what should be a very simple problem as part of a larger project I'm working on. It's just laminar flow in a pipe of length 14,000 feet and radius 0.04 feet. I'm just trying to find...
View Article