Phase Change in Time Dependent Study
I have created a time dependent study to model the change in temperature of a solid material exposed to room temperature air over 24 hours. Next, I added in ice around the solid material to function as...
View ArticleElectrostatic shielding by a spherical shell with a hole
Hello,I am trying to simulate what i've attached as a jpg. Essentially i want to test the electrostatic shielding of a thin conducting spherical shell filled with air with a hole on its surface. The...
View Article水下运动物体产生的水中压力变化Changes in water pressure caused by underwater moving objects
水下运动物体产生的水中压力变化，应该怎么仿真这种压力变化？Underwater pressure changes caused by underwater moving objects, how should this pressure change be simulated?
View ArticleHelp Beginner!
Hi guys I am a beginner and I use comsol for learning purposes. So, I would like to set up a simulation but I don't know how. I have a butterfly valve that controls the inflow of exhaust gases in a...
View ArticleHole on a spherical shell
Hello, I am trying to build a metallic spherical shell with a hole on its surface. The shell must be filled with a dielectric e.g. air. Can you recommend any way of doing this?
View ArticleHow can I extract the data from a defined variable?
So in my study i used parametric sweep and used this expression to calculate total deformation of the system: sum(withsol('sol2',dy,setind(t1,i),setval(t,1)),i,1,20) My problem is that i cannot find a...
View ArticleTerminal velocity question
I am trying to set up a simple test problem. A solid sphere falling through water, accelerating until it reaches terminal velocity. I am a fairly new user so I apologise in advance if I missed...
View ArticleMoving Mesh - Non-isothermal process with porous medium
Hi All, Do you have any idea that how I can have a moving porous medium attached to the wall on a non-isothermal process. Basically, my problem is pretty simillar to THIS EXAMPLE The main difference...
View ArticleDifferent particle-wall and particle-particle interactions
Hello!I am working with a microfluidic chip where I will flush two types of cells inside it. My question regards about different interactions between different cells.Let's say I have cell A type and...
View ArticleSubsea Riser
Hello everyone! I am having some problem to model a Subsea Riser. Basically it would be a long steel pipe that would have a catenary geometry when its sustented by its own weight. I would like to model...
View ArticleFlow Simulation - Membrane break
Hello I am simulating a transient high-speed fluid inside a manhole. By default manhole does not have any exit. The manhole contains idea gas only. I am simulating the velocity, pressure and...
View ArticleClik here to view.
Integrals as boundary condition
Hi all,I'm building a Newman's battery model in COMSOL using PDE (coefficient from PDE). Since it is a 2D model, at the surface of the current collector, I'd like to impose the integration condition in...
View ArticleUsing a solution for building the geometry of a second component
Hello,I would like to implement a thermal expansion in an RF model ( Eigenfrequency). It would be sufficient for me to consider the expansion via the scale function when creating the geometry. The...
View ArticlePrescribed Rotation (stationary)
Instead of a prescribed displacement I would like to rotate a block within a stationary study. What would be the best way to do that?Thanks in advance
View ArticleSharing variables across physics elements
Apologies for what is probably a fairly basic question:I am solving laminar flow and also a Domain ODE. I want to use the T_stressy variable from the laminar flow solution as a source term in the ODE....
View ArticleEddy currents and magnetic fields with moving mesh
Hello,I'm trying to build a 3D model of Eddy currents in a conductor oscillating in a magnetic field. I'm using the AC/DC magnetic fields module, but have access to anything in the AC/DC package. In...
View ArticleArgon dielectric barrier discharge
Hello,I was wondering could someone help me benchmark in Comsol 5.4 the attached paper by *Bose et al.I am modifying the argon_dbd_1d.mph plasma module tutorial but have not got the same output as the...
View ArticleCOMSOL with matlab how to express "if An object with the given name already...
Dear somebody who concern, I use COMSOL with matlab to change some parameters to achieve optimization and simulation, but some parameters will make an object(in fact, it is formmesh) disappear, and...
View ArticleModelling the Deflection of Magnetic Elastomers
Hi,I am trying to model the deflection of cantilever-shaped magnetic elastomers in the presence of a magnetic field. I've selected the magnetic fields and solid mechanics modules to model the physics...
View ArticleTime-Dependent Animation Looping Over Time Does Not Display Time
If I do a time-dependent study and want to animate it over time, most plot types show T = X sWhen I do a 1D Line Plot, this does not happen. I cannot get it to display what the actual time is during...
View Article