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How to Improve Convergence in Natural Convection
I am wondering how I can improve convergence in my natural convection model. It is a simple model; an isothermal aluminum plate in water. The model starts out fine but as the run continues (transient...
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Properties of model
Hey. How can I check the properties of the model object? For example, the current in the coil, or the radius of the circle, the properties of the materials. Thank you.
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Acoustic resonances in a room with a Perfectly Matched Layer
Hello. I'm using COMSOL for an acoustics project, and I have trouble setting up the PML to work perfectly. My case: A rectangular room with totally absorbing ceiling. The room is simply a block, and I...
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How to get final dimensions i.e. outer profile in COMSOL?
Dear friends i want a help in this part. Here, i'm explaining the full problem. # i got the co ordinates of a biological part from image analysis in MATLAB . I plotted those points in the COMSOL (...
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Strain localization
Hi everybody, If I press a soft block of material with elastic modulus of 60 MPa with a hard sphere, when would I have the strain localization? Does buckling means strain localization or a sign of...
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Local maxima of solution
Dear all, I use comsol to solving a certain EDP problem (Laplace equation for exemple in crown domain: 2D or 3D domain). The solution is noted 'u'. I want to calculate the all local maxima of the...
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How different are these?
Hi, i am a student in republic of korea. My model is to observe how E-field enhancement is made by constructing nano gold patterns on a slica galss, applying incident laser from z-axis. However, I have...
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"No frame is defined for 0D applications"
Hello again. I am trying to simulate an E-core transformer. When I click the study 1 and select the show default solver there is an error occurs "No frame is defined for 0D applications" . What is it...
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Electromagnetic actuator
I have problem with coupling the magnetic that generated by 2D Coil with permanent magnate to actuate the cantilever beam. Also, I have faced problem to specify the boundary of moving mesh that is...
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Induced current/voltage from one coil in another
Dear community, I just started to use COMSOL. Now, I'm trying to model two cylindrical coils with different radius but at the same position (also same length and thickness). I'd like to apply a...
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Troubles with reading COMSOL text data files and files with interpolation...
Hello everyone! I have some troubles with creating my own reader for COMSOL text data files and files with interpolation functions. I have read "The COMSOL File Formats" section of...
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Electrodeposition of chrome
Hello, We are trying to model a chrome plating process with a non-dissolving (inert) anode. We used the Tertiary, Nernst-Planck module with a moving mesh. We set up the electrodes as "External...
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Error in Jacobian
Can I know what the error means??"Failed to find consistent initial values. Segregated group 1 Failed to evaluate operator Jacobian. Operator: nif, Geometry: 1, Boundary: 12 13 14 15 17 18 19 20 24 25...
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Time to Reach Steady State in a Diffusion Problem
Hello, Is someone able to help me, please? I'm using COMSOL to model a diffusion problem. I have solved it using the stationary solver. I am able to see that at steady state the concentration on the...
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Surface impedance
Hello everyone, I want to plot the surface impedance of my simulation. Can I do it in COMSOL? How I do it? Thanks Gustavo
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biosensor
hi sir,i am currently working on microcantilever beam based biosensor,and i want to know about the piezoelectric module and how to incorporate BC in microcantilever,
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How to Improve Convergence in Natural Convection
I am wondering how I can improve convergence in my natural convection model. It is a simple model; an isothermal aluminum plate in water. The model starts out fine but as the run continues (transient...
View ArticleClik here to view.
Properties of model
Hey. How can I check the properties of the model object? For example, the current in the coil, or the radius of the circle, the properties of the materials. Thank you.
View ArticleClik here to view.
The relative error is greater than the relative tolerance..Error!!!
Iam a newbie to comsol. And Iam learning comsol for my research. I simulated my first simulation and I got the below mentioned errors. Failed to find a solution. The relative error (4.6e+004) is...
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Acoustic resonances in a room with a Perfectly Matched Layer
Hello. I'm using COMSOL for an acoustics project, and I have trouble setting up the PML to work perfectly. My case: A rectangular room with totally absorbing ceiling. The room is simply a block, and I...
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