Radiation - Discrete Ordinates
In the simple model attached an incident irradiation of 10 W/m² is set at the internal walls, but when solving a value as high as ~50 W/m² is reached at this surface. Why?
View ArticleMagnetic Field Simulation; 'Stationary' and 'time dependent study'...
This is Jason Kim, studying biomedical engineering in Korea in the field of diagnostic medical device. I'd like to discuss and share your experiences regarding 'Coil and magnetic field' and here I post...
View Articlemeasure the distance between two boundaries.
Dear, all I am simulating a droplet impact on texted surface. I want plot a graph : distance VS Time. For this case, How to plot it?Thanks.
View ArticleAir-filled Cavity in Cable Insulation
I have made a simple cable and insulation with a circular air-filled cavity in the insulation.When I perform the stationary study, the electric field through the cavity remains the same, regardless of...
View ArticleGetting different values each time running the same simulation
Hello all,I am working on Comsol 5.3, using a time dependent ion flow model with 2 Partial differential equations. Everytime I run the same simulation (without any change) i get totally different...
View ArticleCorona Discharge in 2D modeling
Hello, I would like to know if someone has managed to convert the 1D model that exists in the Application Library to 2D for the Corona Discharge at Atmospheric Pressure.I have created the 2D model and...
View ArticleEqual spacing across an object
Hi, I'm looking for an operation that seems quite trivial yet somehow I wasn't able to find a way to do it. My apologies in advanced if I missed something obvious, I'm very new to comsol. I want to...
View Articleparticle tracing for PTV/PIV
Dear all,I tried ti sed a simple model to create video to analyze with particle tracking velocimetry tecniques...someone did it?I have two questions: it's possible to avoid the trajectories on the...
View ArticlePort in Wave Optics
Hi there,I am new to Comsol and my major is plasmonics. I review some examples in Comsol, but I am confused about ports. I cannot understand the difference between them (priodic, numeric, ...), so I...
View ArticleWhat is effective mode index in COMSOL?
I'm working on PCF mode analysis and I'm new to COMSOL, I don't really understand what effective mode index exactly means.
View ArticleThe Spring Constant Of A Rectangular Cantilever by comsol
Calculating The Spring Constant Of A Rectangular Cantilever by comsol ? W=234 (μm), L=2471 (μm) T=90 (μm)compare to this formula k = (0.25 * ((E * W * (T^3))/(L^3))) if any one can simulate this by...
View ArticleModule for calculating the fault current in grid dc
Dear all, Hoping all is doing well with you. I'm asking for a module for calculationg the earth curent in a grid high voltage DC. Also the name of Multiphysics. Kindest Regards Samar
View ArticleSurface reaction and Reactive Pellet Bed
The below post is related to an archived discussionHi all,I would like to model a reaction that occurs on the surface of pellets which are non porous.The reaction scheme: A+B(ads)<=>C(ads)Where...
View Articletemperature per node of the mesh
Hello, My major is nanoscale heat transfer.I'm studying the heat transfer by implementing the transistor in 2D simulation through COMSOL.However, I have questions during my study.Is it possible to know...
View ArticleInserting pressure boundary load on Pressure Acoustics or Solid Mechanics?
Hello everyone!I'm modelling a simple emitter-receiver ultrasonic system with a cylindrical sample between the transducers. I'm using independent Pressure Acoustics interface on the emission and...
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Question about equaton 17 in FEM section of Multiphysics Cyclopedia
Hi, I'm confused about Eq 17 of the FEM section of the cyclopedia: https://www.comsol.com/multiphysics/finite-element-methodIt seems to me the sum does not belong in the last term of eq 17 (going from...
View ArticleDisolving silver ions from an silver electrode into flowing water.
Hello Everyone!I would like to know which physics modules I need to apply to track the concentration of silver ions through a pipe section. The silver ions dissolve in water by ionization (applying...
View ArticleThermal analysis of FDM technique in additive manufacturing silumation by Comsol
Hi Recently i strated to work with comsol multiphysics for FDM simulation ( FUSED DEPOSITION MODELING).My objective is to simulate deposition of a melted polymer, and measuring different properties of...
View Articleroll to roll
i need help in order to simulate the roll to roll cylinder with patterns . in which a fluid element placed on a plastic sheet i want to move this fluid channel between two rotating cylinder. i used...
View ArticleHow to obtain absolute current profile
Good morning to whom it may concernI would like to obtain the absolute value of current on a thermoelectric module and I can't seem to find a way to do it.Thank you in advance for a replyBest regards,...
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