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which coupling operator to use?
Hi, I have the field for two different fibers with slightly different geometries (lets call them E1 and E2). Now I want to calculate the integral: where A is the area of both fibers. I was oriented by...
View ArticleAFM or indnetation simulation
Hello, I want a step by step way of simulation a nanoindenation experiment or indnetation by AFM using Comsol. I appreciate any help... Raed
View ArticleTime marching nonlinear equation by applying a modified Newton algorithm.
Hi, I am using a time dependent temperature function boundary condition for rectangle left side heated wall and would like to solved this problem by time marching implicit scheme, nonlinear system of...
View ArticleTime-dependent Heat Transfer study - strange periodicity
Dear COMSOL users, I'm modelling a (reasonably simple) geometry in which I have a pulsed heat source with a period of 3 minutes (1 minute the source is on and 2 it is off). The geometry is a cylinder...
View ArticleHeat transfer in three blocks
Hello. I have side-by-side three blocks of three difference materials. I want to explore the heat transfer in these blocks when applying a temperature on the surface between the first and second walls....
View ArticleMoving Laser Heating
Hi, I am Trying to simulate a Laser heating of block of steel, the laser moves in a 80 mm straight path. my Problem is, the Temperature is almost steady along the path , for example 200°C [+5,-5], but...
View Articledrying process
Hello user's COMSOL I am trying to simulate a simple drying process with COMSOL , but I have been unable to link heat and mass transfer processes together. With the program, I want to model a porous...
View ArticleCOMSOL Video Player of Displacements (Solid Mechanics Module).
Hello All, I'm new to COMSOL, and I am doing a simulation in which I have a droplet modeled as a rigid body on an truck radiator fin (aluminum) surface. The ultimate goal of the study is to study the...
View ArticleHelp needed: magnetostatic force calculation using Maxwell stress tensor
This problem has been bothering me for weeks. I read previous posts on this forum on topic of Maxwell stress tensor but still could not find what is wrong. I'm trying to calculate the repelling force...
View ArticleComsol Rf penetration simulation
Hi Everyone, I am newbie to Comsol and I want to know ' is it possible to simulate the RF signal penetration through different metals using comsol?' I am testing, what different metals the RF signal...
View Articleheat transfer in non linear system by using time dependent temperature function
Hi, I am solving a heat transfer non linear problem in COMSOL v3.5a. The problem is a rectangle geometry in which a left side heated with time dependent temperature function when time is zero at...
View ArticleVisuals of Magnetic Fields around a cylindrical rod (A Beginner's Question)
This is quite a simple projec I know, and I apologize in advanced for taking away any space that might have been used for a more pressing question. To be quick, I'm working with a professor and he's...
View ArticleWall Condition in Fluid Particle Tracking (fpt) Module
It seems as though the instructions in the COMSOL User's Manual (v4.3) may disagree with the logic in the fluid particle tracking module for the wall condition specification. Before I submit it...
View ArticleQuestion about extrusion model couplings and curved edges
Hi, Does anyone know if it's possible to use model couplings between a straight edge (i.e. a line segment) and a curved edge (so that the variables would be defined along the length)? It seems like it...
View ArticleParameter values in tables first row and first column
I am doing a simulation with two parameters in a Parametric sweep. Lets call these parameters par1 and par2. Then I use a Derived Value - Surface Integration to get a value for every parameter...
View ArticleTransmission througth an inverse opal structure
Dear all I am trying to simulate with comsol 4.3, wave optics module, the reflection from a structure of inverse opal i make the geometry, mesh and material but i can t figure out how to put a source...
View ArticleHow find out 'Global equation' under Electromechanics module....
Could anybody please tell me how to add global Equation from Electromechanics module in 4.3 b.it supposed to be showing according to the example of simple mems resonator.But when I was working with...
View ArticleDiffusion problem with sharp edge
Dear all, Using the 2D general PDE form within COMSOL, I'm trying to solve four coupled differenial equations, in order to obtain the velocity profile of an magnetohydrodynamic flow. One PDE for the...
View Articlemass balance
Hello I am a user of Comsol 4.3b. I have a very simple geometry of some channels. I just need to see the flow distribution between different channels. The flow is laminar and the boundary conditions...
View ArticleStrange Mesh Behaviour when coupling Laminar Flow and Moving Mesh (ALE)
Hi all, I want to simulate the convergence of tectonic plates and the resulting uplift of material at the plate boundary. The model is set up as follows: The left side and the left half of the bottom...
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