Comparison between integration in COMSOL and MATLAB
I have an expresion I need to integrate. I have been integrating this expression in MATLAB. However I find that when I integrate the same expression in COMSOL I get a slightly different value (see...
View ArticleChloride Ingress in a Virtual Concrete Microstructure
Concrete is a heterogenous microstruture comprising of various phases such as cement phase, aggregate phase and ITZ. I have a stack of 2D images of a computationally generated 3D concrete...
View ArticleLeak simulation in a double pipe heat exchanger
Dear all,I am simulating a double pipe heat-exchanger.A double pipe heat-exchanger is a simple assembly with a pipe inside another big pipe. The fluid in inner pipe is A and another fluid B passes...
View ArticleHow do I make a cylinder with water in it?
Does anyone know how to make a cylinder with water in it? I want to add a g-load to the cylinder to examine the movement of the water in the cylinder.
View ArticleSpring Foundation question (Structural Mechanics)
Consider a single linear element (linear elastic material) whose end points are constrained by Spring Foundation nodes with some finite spring constant (say 1 N/m). Let's say my nodes are at 0,0 and...
View ArticleLaminar Flow (spf) without inertial term
I am currently working within the Acoustic and Structural Mechanics Modules. I would like to apply the equations similar to the creeping flow conditions where the Stokes problem is considered without...
View ArticleTransmission and Reflection Spectra of a Resonant Cavity Structure
Hello everyone, I would like to discuss some queries regarding the Transmission and Reflection Spectra of a 2D resonant cavity structure which I have simulated in COMSOL 5.3.The resonant cavity...
View ArticleMeshing for very thin conductors
I am attempting to mesh a simulation of a very thin conductor (0.1 um) with lateral dimensions in the range of 100's of um (for stationary COMSOL AC/DC magnetic and electric fields simulation).Whenever...
View ArticleComb Drive Optimization
Hello Everyone,Im writing to You all, regarding to my topic. So im working on my university comsol, and ive built an comb drive actuator ( screen below ) I wanna to optimize the shape of the device by...
View ArticleINDUCTOR WOUND AROUND A COIL
Hi all, I wanna simulate a coil wound on an iron core with just 5 turns made up of copper and I chose my physics to be AC DC module. I chose my study to be Stationary. But even then I get some errors...
View ArticleTo simulate two different sizes of particles (both less than 1 mm) as a solid...
I have to simulate flow of water containing coal particles mixed with sand particles, both having different particle diameters, flowing in a channel. How can I assign two different particle...
View ArticleAverage temperature at the nodes
I have an area where I want to calculate the average temperature at the nodes, weighted by the area of the element, of the elements that are in this area. How to do in COMSOL version 5.3a? The geometry...
View ArticleInductance profile
Hello, I am moduling a switched reluctance generator, and I need to get a graph that give me a inductance profile of this machine. Attached goes a examble graph that I want obtain. How can I get that...
View ArticleCan I change the group speed at wavenumber? [Dispersion Curves for a...
Hi, I saw the example comsol : ' Application ID : 53431 ' ' Dispersionsion-filled Elastic Pipe '. But the final result, the dispersion curve, is wavenumber - frequency plot. What should I do to change...
View ArticleSetting up multiple independent studies
For example, I have a Study 1 that does a certain calculation, then a Study 2 that does a very similar calculation with a different field configuration and has absolutely no connection to Study 1, then...
View ArticleINFINITE ELEMENTS DOMAIN
Hi guys I am unable to select the Infinte Elements Domain Option. I was to simulate only a coil placed inside the IE domain Please help me. I dont know where I go wrong.
View ArticleSimulation of a nonlinear Thermoplast in tensile test
Hello together,probably my problem is easy to solve, but right now i am stuck.I am currently simulating a tensile test with an nonlinear thermoplast (Polypropylen). Due to the test-velocity of DIN EN...
View Articlemeshing strategy for large-scale 2D thermal model
Hi all, I have a large 2D model as attached with sharp edges and very irregular shape. triangular meshing does not look very efficient. I was wondering if there is any other meshing that i can use. the...
View ArticleUnderstand and apply phase for Shell structure
HELLO ALL,I am new to comsol. I am trying to use comsol to build a shell structure. The equation using under shell includ phi (phase ) and Mph phase for bending. if i do not know the exact value from...
View ArticleDynamic grid simulation of valve core motion of a solenoid valve
Hello, I have some questions about my model. My model is a dynamic grid simulation of valve core motion of a solenoid valve. The valve core is moved by the electromagnetics force. So I want to add two...
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