Solving multiple modules simultaneously.
As the subject states, I am trying to solve two modules simultaneously. The model is of two electrodes with a solution above them. One module is a partial differential equation in place of...
View ArticlePeriodic Inflow
Dear friends I like to know how can we define inlet as attachment, imagine we have a channel, flow has different velocity at different height, it's like step, for example if height is 10cm: from h=0 to...
View ArticleUnresponsive and slow
Dear Comsol developers, I am experiencing slow response when selecting 1D plot group and/or export nodes. It appears that Comsol is calculating the plot every time I select the node, which completely...
View ArticleUse stop condition in solver
Hi, I want to know how to use stop condition for time period in solver parameters and write a stop condition? I am using a COMSOL V 3.5. Thanks in advanced. Vinay Patel.
View ArticleResults no longer visible (heating of granular materials in 3D)
Hello COMSOL Users and Experts (Especially Josh of Altasim/Nagi Elabassi) I am trying to simulate the heating of granular materials in 3D. One study with a fewer grain and the other one with more...
View ArticleModeling anisotropic Material
hi, i need to model a system (a sphere with a dipole in its centre), the model exhibits anisotropic conductivity. i.e. the radial value of electrical conductivity sigma is 10 times less than its...
View ArticleTracking Residual
I need to track the residual in my simulation in order to represent how closely the governing equations are being represented. I know comsol keeps track of residual since ive had several errors...
View ArticleStreamline along a line or plane
I have a 3D model of a system of permanent magnets and am trying to obtain a streamline of magnetic flux density along specific planes in my model. In the settings for a streamline plot there is an...
View ArticleCreep - Plasticity
I want to use the non-linear structural mechanics module for simulation of plastic deformation by yielding. There is a creep module and a plasticity module. In the creep module, I find more suitable...
View Articlewhat's different between 'frequency domain' and 'frequency domain,...
Hello guys I'm simulating a cantilever sensor, which contains three modules, 'laminar flow', 'electric currents', and 'particle tracing in fluid flow'. For this, in electric currents module, AC...
View ArticleHow to change colour scale bar width?
Hello, I am using COMSOL 4.2a and when I export post processing image then the scale bar in the image is very thin and almost invisible at the same time the range of values is also not visible. So I...
View ArticleSimulating a rheometer
Hi Everyone, I'm a bit new to Comsol so sorry if this is a dumb question. I'm trying to simulate a rheometer in my lab. It's basically a cone in a petri dish. For simplicity I'm using 2-D and have...
View ArticleQuestion about model ID:9408
Dear Friends, I was checking model id 9408, it's vibrating beam in fluid flow, my questions: 1- I like to have Sine vibration for beam, I replaced point load in this model that it'a Gaussian pulse with...
View ArticleQuestion in example of "Block Verification Model "
I have two questions on this example, 1) I found that the parametric sweep in this model is like this, 8e-3*{1e-3 range(0.05,0.05,1)} It means that the prescribed displacement goes from 0 to 8 in 20...
View ArticlePressurized Cylinder, Heat Generation, Concentric Cylinder, Contact Pair,...
Hi, I am modeling two concentric cylinders with a gap between them initially in 2D Axisymmetric. (1) I am using "Heat Transfer in Solids" and "Solid Mechanics". I have defined a contact pair in...
View ArticleLaminar outflow boundary condition does not converge!
Hello everyone, I am new to this programm and want to simulate the first part of a streamed circular duct. It serves as an hydrodynamical entry length to develop the velocity flow profile. In the...
View Articleinduction heating
Hello every body, I want to know if it is possible to measure the impedance of a charge in induction heating process. I can have lot of informations on the coil parameters (Icoil, Pcoil, Zcoil...) but...
View ArticleHow to solve non linear problem and how to converge it .
I am using COMSOL 3.5a. I am solving heat transfer through conduction and then convection. During the first stage of conduction the model is not converge it shows the singular matrix error. My question...
View ArticleCan I access each cell's residual
Hi, I was wondering if it is possible to access the flow residuals from a UDF? I need to be able to access the momentum and continuity residual for every cell in the computational mesh. Thanks, Farid
View Article1 week away: FINAL Abstract Submission Deadline for COMSOL Conference 2013...
Dear COMSOL Community, Here comes the final week for abstract submission to this year’s COMSOL Conference in Boston! New and updated abstracts are coming in every day and I truly appreciate your hard...
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