transmission coefficient of sound pressure
In the two-dimensional acoustic model, I encounter some problems to be solved. If I set the amplitude of the incident sound pressure to 1 Pa 1. How to calculate the transmission coefficient of sound...
View ArticleHow To Apply Boundary Conditions In A Solid Fulid Heat Transfer?
Hi ! I am currently doing a two dimensional simulation of a reactor. Chemical reaction take place in this reactor. The reactor is a cylinder reactor. I set up a two-dimensional axial symmetry model to...
View Articlehow can i make 'cylindrical wave incidence' in wave optics module?
Hi all, i'm in elemetary level using comsol, and deppressed by successive failure in computing... please give me a hand..i want to simulate a cylindrical wave impinging on periodic metasurfaces placed...
View ArticleMatrix Division by 0 Error/Convergence Error
If these errors seem familiar please tell me how I can rid of them.I am using Comsol Multiphysics 5.4a to see how electrical conductivity in a doped semiconductor varies with mechanical stress. My goal...
View ArticleHow can avoid the model automatically selected the magnetic insulation in RMM...
Dear all, I am simulating a pm motor in rmm physics. I have met different in my simulation, now, after I imported the model with different parts and I successfully formed assembly. I defined the...
View Articletransmission coefficient of sound pressure
When doing acoustic simulation, Is the method of calculating the sound pressure in water different from that in air? The data were always incorrect. I set the incident sound pressure in the air to 1...
View ArticleHow to get electrical current (A) of each streamline of current density (A/m2) ?
Hello everybody,I am using comsol to model a bipolar probe with three surfaces : Conductive surface forced to 0V, conductive surface forced to 10V and insulation surface beetween the two conductive...
View ArticleImporting excel data of time varying pressure in Comsol
Hi All!I would be highly appreciate if you could help in importing the pressure data from excel in Comsol for using as Inlet boundary load in FSI problem.One possibility is through creating analytical...
View ArticleStatics analysis of Multi-body dynamics
Hello,I made a mass, spring, damping system with multibody dynamics component. I already fished analysis of time depent motion with my system. but, it has a lot of errors when I solve this system with...
View ArticleRestarted computation?
When I use comsol, the restarted computation is appeared even I do not use consistent initialization. I would like to know when the restarted computation will be applied?
View ArticleNusselt number for heat generating element
hello, recently i have been working on a paper where i faced the problem of defining Nusselt number for heat generating element in a square cavity.can anyone help ?
View ArticleReinforced Concrete Beam (Eigen Frequency)
Hello, I am new to comsol and i am working on reinforced concrete beam to analyse the displacement of the beam for 100Hz and 200 HZz frequency. The concrete beam is of 10*12 with steel reinforced. The...
View ArticleCorona Discharge- Cold Plasma
Dear users and specialistics, my case study focuses on the optimization of corona discharge and therefore the presence of cold plasma with its specific chemistry. We are doing a first approximation in...
View ArticleRefracturing in Shale
Has anyone did refracturing simulations in any rock or reservoir?
View ArticleThe simulation of pm-motor in RMM physics--Identity boundary pair and...
Dear all, I am simulating a pm-motor in rotating machinery magnetic(rmm) in comsol. In the process of my simulation, I have met the questions in the title. I have done with in 2 ways. Case one, I...
View ArticleMultiphysics Organic Photovoltaic IV characteristic Simulation
Dear all,I am currently working on a project relating to Organic Photovoltaic cell (using polymer). I would like to simulate the IV characteristic of the cell. However, I am unsure which physics model...
View ArticleHalbach Array Mandhala Polar Define magnetization directions
have a nice day. my name is Erhan. I want to model the 8-magnet double-sided halbach mandhala array. In physics, I chose 'magnetic field no curret'. I'd like to identify a neodymium magnet. I'm...
View ArticleGet the entity number of an edge using matlab
HelloDo you have ever get the entity number of an edge using the start and end points of that edge? In fact, I have the coordinates (and definitely their entity numbers) of two specific points (for...
View ArticleBackflow into inlets with multiple inlets
Hi everyone,I am simulating laminar flow through a thin geometry with two inputs on one side and one outlet on the other side (see image for the geometry). When initializing the inputs via velocities I...
View ArticleIdentity Boundary Pairs And Magnetic Insulation Boundary
Dear all,I am simulating a pm-motor in rotating machinery magnetic(rmm) in comsol. In the process of my simulation, I have met the questions in the title. I have done with in 2 ways. Case one, I...
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