Material Properties in application builder
I have defined few materials in global section.Then while giving properties to the block, I have created a material link.My question is " Can I use that material link in application builder as a combo...
View ArticleReactions and Species Source
Hello COMSOL-Community,can someone explain me, whats the difference between a reaction and a species source in the Transport of diluted species(Tds) library in Comsol?Thanks in regards
View ArticleInverse Heat Conduction Problem (edited)
Hi Everyone,I want to model a material which is excited with heat source of known power. The change in surface temperature is measured experimentally. And input thermal properties will be assumed to...
View ArticleClik here to view.
Normal derivative - Phase field model
Hello,I need the concentration normal derivative (, or in fact ) at a fluid-fluid interface using phase field in COMSOL to pass it in a source term for the species conservation equations. Any...
View ArticleClik here to view.
Measuring Imported Geometry Length
Hello all,I have imported stl files of human bones from WikiCommons in order to investigate their modal frequencies for a project. Several authors have used their own bone models but I have to download...
View ArticleError using multiple Parameter for Sweeps
Hello Comsol-Community,i get an error when i try to calculate a study with two Parameter Sweeps. The error say something like "Parameter list dont have the same length for the thin sweep type" (Direct...
View ArticlePulsed laser heating
Dear colleagues,Recently I am trying to simualte the temperature of pulsed laser heating. It is a multilayer structure, and we need to consider reflection and transmission betweeen different layers, so...
View ArticleErrors when compiling equation
Recently,i am trying to analyze the linear buckling of some kinds of structures.However,When I try to calculate, it always prompts that there are multiple moving coordinate system details in the...
View ArticleHow to set the boundary conditions of the beam envelope
HelloI simulate a metalen model when a circular polarized light is normal incident. Because the minimum eigenvalue is smaller than the wavelength, can I use beam envelopes for simulation? If so, how...
View ArticleControl variable change rate
I'm doing topology optimization on a fluid flow problem. I was wondering if there is a way I could change the step size of the optimization. In other words, I want my control variables (elements...
View ArticleLaminar flow-velocity
Hi, I am new to Comsol .I have designed hollow L tube structure with laminar flow in 2D. I am selecting water as material.I have to design wireless capsule endoscopy module in that L-shape tube.Capsule...
View Articlecalculation of the cross-sectional area of a porous substance
Hello!!! Did anyone have to calculate the porous surface area? I have a cube interspersed. I want to calculate the area of the sides of a cube minus the area of the inclusions
View ArticleIntegrating pressure in CFD simulations to compute force
Hi! I am working on a vertical-axis wind turbine and I'd like to compute the forces exerted on its blades by the wind. In order to do so, I am performing CFD simulations on my wind turbine in the...
View ArticleShielding from magnetic field of the earth
Hello,I am completely new to comsol. I've created a geometry of cocentric cylinders (with some openings) in solidworks and have imported this geometry to comsol.I'd like to simulate how well these...
View ArticlePostbuckling
Could comsol do post-buckling analysis? I wanna track the stress-strain relationship and deformation behavior of composite materials after buckling.
View ArticleDiscussion of case 12835
In the case 12835: Iron Sphere in a 13.56 MHz Magnetic Field, the Impendance Boundary Conditon is applied. There are two solutions mentioned in the pdf of application files (shown in the following...
View Articlesectional area calculation
Привет !!! Может быть, кто - то должен был вычислить площадь поперечного сечения пористых структур? У меня есть куб с некоторыми включениями m. Я хочу рассчитать площадь поперечного сечения этого...
View ArticleDistance Between the Model and PML
Hi,Is there any rule of thumb or minimum value for the distance in wavelength between perfect matched layer (PML) and the model for antenna simulations? I experienced that the size of spherical PML has...
View ArticlePhase Change Material modeling
hello, i was using comsol V5.2a for simulating a phase change material inside a solid domain, and it showed a ((nearly)) constant temperature during melting and soldification. now i'm using COMSOL v5.5...
View ArticleThe Problem: the maximum gain is bigger than the maximum directivity.
Hi,In the attached file which is a microstrip antenna model, the value of maxGaindB is bigger than that of maxDdB. I couldn't find the reason. Do you have any idea?Thanks.
View Article