Number of degrees of freedom solved for: 0.
Hello all, When I try to use 4.0, I met with this problem when solving. Does anyone know how to fix this? I think it might be that I did not add the mesh to the solver, which is different from 3.5a....
View ArticleWater droplet falling through air on a structured surface
Hi, Im new to comsol. I was trying to model a water droplet falling onto a solid substrate. The droplet should fall through air and then i should be able to calculate contact angles at various...
View ArticleDeformation of liquid droplet
I am new to COMSOL, so I am referencing a work on deformation of liquid droplet impacting a solid surface. I tried to recreate the same model as that work. But I ran into several problems. As I tracked...
View Articlehow to understand the code of comsol in matlab editor.
how can i understand the code of programme that is developed with the help of COMSOL and saved as m file and now it is obtained in COMSOL MATLAB editor. how to get to know the curve it shows belongs to...
View ArticleCan someone help me understand this error?
I need help understanding the cause of the following error: "Failed to compute elastoplastic strain variables" I have received this error numerous times in a few different structural models where I am...
View ArticleCluster computing got stuck :external progress scheduling
Hi,Ihave recently setup a cluster and i had comsol 4.3 on the head node,and i had the installation forder shared, model working directory shared. However,when I am trying to submit a batch job,using...
View ArticleError in solver
hi, I am modelling a 3d accelerometer in 4.2a version, during simulation i m getting an error like "out of memory during LU factorization" , could anyone pls tel me why i am gettin dis error..
View ArticleSome comments on pA material absolute pressure and CFD gauge & reference...
For those interested in pressure definitions As I read often comments on the Forum, and I heard many questions on the last workshop at the Milan conference on CFD pressure, gauge, absolute, reference...
View ArticleDC magnetic state of ferrite
Hi!! could anyone please guide me about how to find the DC magnetic state of ferrite in Comsol's RF module.sorry for a vague question but i am pretty new to COMSOL as well as electromagnetics domain so...
View ArticleIs it possible to create a "memory" of a varible?
Hi, I want to be able to define a stress point in space that comsol should remember until a certain condition and then it should change to a new stress point memory. It is a time dependent problem....
View ArticleCALCULATE HEAT PRODUCED AFTER HAVING RESULTS
Hello, I have a plate that vibrates and I have friction in one point.In my results I can see the stress in this point,the strain,displacement,frictional force,sliding velocity .I want to calculate the...
View ArticleThermoelectric Effect
Hello, I'm working on Thermoelectric Generator and I would like to have a basic model with the equations used in COMSOL, Could anyone who worked in this field, please help. With Regards . Pheba
View Articleconvert imported *.stl into solid
I am importing a rather complex geometry into COMSOL from Solid Works. After some tinkering with the import controls, I managed to import the object but I do not think COMSOL recognizes it as a solid....
View ArticleSimulating the magnetic field of a 2D electromagnet
I am trying to simulate the 2D magnetic field generated by an electromagnet using the Magnetic Fields Module in the 4.3a version. I created two models: one that solves the problem using the 2D geometry...
View Articlemagnetization problem
Can any one let me know what is problem , i am not getting magnetization in the coil , i excited primary coil with the 319 v and want to see magnetization in the coil , i am not able to get the...
View ArticleHow to define a metal in the Eigenfrequency analysis?
Hi, I want to define a metal material (i.e. Ag or Au) in the RF Eigenfrequency analysis. I may defiene by typing in the Drude model, but how can I connect the omega in my equations to the readable...
View ArticleStabilization methods
Hello, How does using stabilization methods like streamline diffusion, cross wind or isotropic diffusion affect my solution.To elaborate, I am solving navier stokes and convection diffusion problem in...
View ArticlePiezoresistive modeling
Hello all I want to simulate a piezoresistive beam with Comsol. I was looking to find an example of piezoresistive modeling to find out what module they usually use and how are the settings but i...
View ArticleTransport of concentrated species - will the species change the flow field ?
Dear everyone, I am working on one simulation about membrane separation, and I am using "Laminar Flow" together with "Transport of concentrated species". I have one question, will the flux (gas A)...
View ArticleFilling an "empty" space
Hello, I'm new to Comsol and a novice at SW2012 It seems in order to model fluid flow through a heat exchanger, the volume filled with fluid (helium in this case) must be included in the model as a...
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