Modelling magnetic fields both outside and inside a vacuum chamber
Hi all,I'm trying to model the B field generated by a set of coils which are outside a vacuum chamber. I would like to know the field both outside and inside the vacuum. I can model the field generated...
View ArticleHow to save data from table with real and imaginary part separately
I have made one mode analysis simulation in comsol 5.2. In the acomolated probe table settings I put the storage to 'in file'. After the simulation finishes the file contains wavelength, effective mode...
View ArticleBuoyant convection in porous media
Hello every oneI am beginer of COMSOL user and now trying to simulate free convection in Porous media. Specifically, I'm trying to see the vertical groundwater flux induced by termal effect of nuclear...
View ArticleHeight variable in mooving geometry
Dear all,I have defined a moving geometry with a defined velocity for one boundary. I have created a condition on the velocity of the boundary, if the heigth of the geometry exceeds a certain value,...
View ArticleChanging the Boundary Condition at every time step for a Transient Heat...
Hi,I am trying to model simple transient conduction through a slab but where the slab is coupled to some simple finite difference code in MATLAB.To do this, I need to pass the boundary conditions from...
View ArticleHow to add shrinkage model for a given problem?
i am currently working on "convective drying of carrot" model in comsol,and i am able to get results of heat and mass transfer for a given model by applying heat and mass transfer equations. but now i...
View ArticleFlow time - CFD
Dear all,I´ve used a model with CFD coupled with heat transfer in a simulation of a coaxial treatment chamber for liquid sterilization.I would like to obtain the liquid flow time ( time that liquid...
View ArticlePlotting the gradient of the electric field squared for dielectrophoresis...
The below post is related to an archived discussion[start here]Hi,Here is what I have figured out. I assume you are using the electrostatics module, and that you know how to design your system and...
View Articlehelp to save the model to comsol 5.1
Dear Sir/Madam,Recently i am doing some simulation about the sonic crystal, and i found the attached model on the comsol traning website (https://www.comsol.com/model/sonic-crystal-16925) and i think...
View ArticleHow to solve void equations error
There are 237 void equations (empty rows in matrix) for the variable comp1.V2. at coordinates: (0.008,0.355), (0.012,0.355), (0.004,0.355), (0.00665619,0.35255), (0.00531238,0.3501), ... and similarly...
View ArticleHow to Assign imported 3d material refractive index values (using...
Hi, I am using COMSOL 5.0. I have imported a 3D refractive index profile n(x,y,z) from excel to comsol using interpolation. The data has been imported and plotted successfully. But while entering the...
View ArticleEffect on solution on decreasing damping factor
When i am decreasing the damping factor(1e-1 to 1e-15) in a cantilever beam with impulse at the end, results are changing significently,like time period of oscillation is keep changing.
View ArticleCalculation of scattering cross section from Au metal nano particle sitting...
Hi All, Myself, Achyut Maity from Ben Gurion University, Israel. I am beginner in comsol simulations. Recently I am trying to calculate the scattering and extinction cross-section from an Au sperical...
View ArticleNo Probe Table with Batch Job
Hello,I have a number of models where I am propagating different T(t) functions into a 1-D sediment column. Since I want to post-process in matlab, I am storing the Probe Table both in the model and on...
View ArticlePDMS - hyperelastic material - which model and parameters to use?
Hello COMSOL community,I am trying to make a very simple stretch simulation on a PDMS rectangular sample (1mm thickness) and to observe the deformation field.For now, I have selected the "PDMS" in the...
View ArticleUse Material Properties in Expression
Hello,how can I use a material property, such as refeactive index, in an expression I am using in a variable?
View ArticleDomain does not hide
Hello,Is there a reason why a domain is impossible to hide? I am using the graphics window to hide and it refuses to.
View ArticleBlurry Graphics Window
Hello, some of the geometries I am trying to build are on the micron scale and when I create them, they are blurry in the graphics window. Is there any way that I can fix this? I tried changing the...
View ArticleRotating machine modeling
The below post is related to an archived discussion[start here] For the synchronous generator model I'm trying to simulate rotar magnetic field is not rotating? I'm using comsol 3.3
View ArticleCOMSOL slice plot inappropriately truncated
Hi there,I am modelling the B fields generated by a set of coils around a vacuum chamber. The chamber is currently represented as a hollow sphere. The chamber is smaller than the coils surrounding...
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