fluid flow with moving mesh ?
Is it posiible to simulate the fish move in the water ? how ? how to set the boundary condition ?
View ArticleChanging the position of an imported geometry in the COMSOL coordinate system
Hi everyone, I'm trying to change the positions of two imported geometries in the COMSOL coordinate system. Unfortunately, after scaling them, they are not placed in the point of origin but somewhere...
View ArticleHow to turn bézier curves into surface
Hi, is it possible to turn a bézier curve into a surface which can be extruded? Thank you for your help. Sandra
View Articleevaluation of the maximum value at the surface
I simulate electric field distribution for to spheres separeted. What I want to do is to evaluate maximum electric field between them using. How do it in the simplest way?
View ArticleSimple Reflectivity/Transmission calculation for RF Air/Glass boundary
Hello. I am an absolute beginner to COMSOL and am hoping to eventually use it to simulate some nanoparticle scattering effects for solar cell applications. I have built a very simple model consisting...
View ArticleParticle tracing boundary issue
Hi, I found strange results when performing Particle Tracing (Comsol 4.2a) simulations. I use the Laminar Flow module to simulate the flow inside a microchannel and the Particle Tracing module to study...
View Articlehow to cut or trim a parametric curve ?
Hi, I'm trying to make a 3D coil using parametric curve and sweep, but I need to cut a part of my curve, I can't change it by equation, so i just need to cut a part of it. In solidworks we used to do...
View ArticleTime dependent adaptive mesh refinement
Hi I'm trying to make a CFD model where the flow is driven by the motion of the walls. To do so I coupled a moving mesh and a laminar flow model. First I solved a simple geometry using 2D axial...
View ArticleCoupling between PDE and Electrostatics
Dear All, Does any one have any experience of solving a steady general form of PDE with steady electrostaics module. I am trying to solve a PDE [ Div(DuE) = 0] where D is the mobility coefficient and E...
View ArticleDrag Coeeficient on a solid particles
Can some one suggest me the procedure t calculate the drag coefficient on a solid sphere in a chamber using lamir flow.
View Articleconnecting CIR to MF physic
Hello, I'm a quite new Comsol user, and I have some questions. I want to excite a coil (mf physic) with an electrical circuit (cir physic) in a 3 D model. I have put a boundary feed and ground...
View Articlefield inside the ferrite
Dear all , i done simulation of two coils with ferrite core ..in the core magnetic flux lines are not inducing ...can anyone let me the problem -- kishore Naik Mude
View ArticleLevel set method
Dear All, I am trying to simulate a problem using laminar Level set method but the simulations are not working no matter what boundary conditions I use (I have followed the tutorial of Ink jet). If any...
View ArticleTransform an imported geometry into a solid body
Hi everyone, Is it possible to change the object type of an imported 3D .stl file into solid? I could only find this option for geometries created in COMSOL... Thank you.
View ArticleWall Boundary conditions
Hi all, I am trying to model induced circular motion of a particle by magnetic fields in a 2d geometry. I have particles moving to the edge of my circular surrounding wall and im having problems with...
View ArticleMie Scattering (absorption, scattering and extinction cross section)
Dear All, Does any of you solved this model woth scattering, absorption and extinction cross section in Comsol 4.2a? I am not able to find way how to write all these formulas in Comsol 4.2a version....
View ArticlePulsed Heat Source
Hello, As someone new to COMSOL, I am need of help on how to implement a pulsed heat source. I currently have a circle on a micro beam acting as a heat source that corresponds to an infrared laser. I...
View ArticleSwirling Flow Around a Rotating Disk
Hi all, first time I've posted here! So I've been working through the Swirling Flow Around a Rotating Disk Model:www.uk.comsol.com/showroom/gallery/616/ It's really impressive. I'm just wondering if it...
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