How to plot time-dependent temperature profile at a point
Hi all, I have 1 question over here, i have been using the SAR head tutorial (Provided by comsol tutorial) to do research for my school project and i have 1 problem over here which is, i cant seems to...
View ArticleHelp with NASTRAN mesh import -> automatically assign explicits in geometry
Hello, thanks for reading this, I was wondering if I could get help with mesh loading. What I currently do with my simulations is take a mesh of the lungs and airways, and assign boundary conditions...
View ArticleRotation of particle in a microchannel
Hi, I am designing model for inertial focusing in straight channel on Comsol. From this model I am trying to find the equilibrium position of particle in the flow by calculating surface forces on the...
View ArticleDisplacement due to point contact
Hi, I want to simulate how a planar surface is depressed by the weight of a overlaying sphere (gravity loading) in Structural Mechanics Module. Both sphere and planar surface are expected to be in...
View ArticleError increases with mesh density for trivial 1D model
Having had some problems, I reduced them down to a surprisingly minimal example: • 1D, single interval, Laplace equation. • Dirichlet BC on left end: fix it at "1.0". • (There is a zero-flux BC on the...
View ArticleLearning meshing, any suggestion for beginners?
I have a complicate geometry and needs to be meshed for microfluid flow simulation. However, I've only used the default meshing method before, which does not work for this current case. How could I...
View Articleconvergence error during simulation
Hello, I am doing a hyperelastic simulation on a silicone rubber sheet with dimensions 50*50*5mm, with pressure being applied on the surface. But after a certain pressure range, I get this error...
View ArticleFunction
How to enter summation of a series ? I am trying to enter prony series(generalized maxwell model) in which there is summation of series for a viscoelastic model. SO if anyone can help me.
View ArticleProblem when using "Remesh Deformed Configuration"
Hi, I'm running into problems when using the "Remesh Deformed Configuration" on a solution data set that contains results from a simulation including "moving mesh" and "solid mechanics" physics. A new...
View ArticleSolid surface deformation due to vertical orientation
Hello all, I am totally new to Comsol and thus I am apologizing in advance if this question is very trivial or if it has been already answered to another thread. Any help regarding how I can (if I can)...
View ArticleNon-Local Modelling
Hello all, I just started using comsol, moving from ABAQUS. I was hoping to gain advice on how to procceed with non-local modelling. I would like to know if comsol can for every point compute an...
View Article[Comsol 4.4] Using deformation from eigenfrequency 'solid mechanics'...
Hi all, the title describes quite well my problem. I have a geometry, for which I calculate the mechanical eigenstates through the "solid mechanics" module. After this step, I end up with a list of...
View ArticleHow to add inertial lift force and Dean force
Hi everybody, I m doing simulation for inertial focusing. I need to see the effect of inertial lift force and dean force on particle. I m just wanted to know where these forces can be defined. I tried...
View ArticleModelling of phase change
Dear Comsol user, I have one conceptual question... I would like to model phase change of solid due to heat transfer from fluid above. Intuitively i should model the melting of solid using " heat...
View ArticleDisplacement vs Frequency Graph
Would anyone please tell me why there is minimum amplitude of displacement on Resonance Frequency? Attaching Displacementvs Frequency Graph! My resonance frequency of canitlever beam is 154.6KHz
View ArticleNo variation in capacitance with body load
Dear Comsol User, I am trying to find variation in capacitance between two plates with applied body load. I defined an air box around the plates. Now I'm trying with electromechanics physics for...
View ArticleVarying capacitance using electromechanics
Dear Comsol User, I am trying to find variation in capacitance between two plates with applied body load. I defined an air box around the plates. Now I'm trying with electromechanics physics for...
View ArticleDependence of Electric field on mesh size in RF modeling
We would like to model our laser in an RF module, solving for electrical field strength, to see the optical field distribution as a function of layer thicknesses, however we kept seeing unexplainable...
View Articlehow to do half model analysis
Dear all, i am doing a simulation where no. of elements and nodes are very large. that is why time taken is very large. my restriction is i can't take larger time step as well as coarser mesh. so all i...
View ArticleEMW Analysis Methodology
Can anyone offer any specific details on the the Robust, Intermediate, and Fast settings and how they relate to the Mesh and Solver? There isn't much coverage in the reference manuals and guides and...
View Article