Limiting the Parametric Sweep study step to a specific step(s) in the study.
I'm doing a small signal analysis (stationary, freq-perturbation) and I want to run a parametric sweep (on geometry) for the stationary step only. I can't seem to figure out how to isolate this within...
View ArticleSolving laminar flow 3-D problem
Hello. I'm working on a master thesis. For the thesis i'm designing a Comsol model. It represents a 3-D geometry with oxygen flowing in it. Is there anybody who can help me to get the model working? I...
View ArticleEnergy balance with variable density
Hello everyone, I am interested in finding the temperature in a system that changes the density in time and I would like to formulate the energy balance using this variable density. What I have in mind...
View ArticleHeating due to shear and compressional wave absorption
Coupling acoustic and elastic wave propagation to look at mode conversion is through a fluid/solid interface is straight forward, but when I try to compute the thermal field using the total power...
View ArticleHow to couple physics
Hi, I've seen several tutorials in which the demonstrator is able to take the solution from one solver and use it as a constraint for the next solver. In every case, the demonstrator already knows the...
View ArticleInflow heat flux
Hi everyone, Does everyone know how the inflow heat flux condition actually works? Because I'm using it to simulate a boiler but the final result does not make any sense as the temperature is way too...
View ArticleAssembling different imported solidworks files into COMSOL
Hi, Wondering how we are able to assemble different imported parts in COMSOL in a fashionable manner? Thanks
View ArticleOutput settings for simulation results
Hello together, I have a question considering the outputs created by Comsol. I am conducting a frequency domain study in a quite large model with frequencies up to 1000 Hz (step size 1 Hz). Comsol...
View ArticleSolving for a specific Pressure or Force in COMSOL?
Hello, I am fairly new to COMSOL and I am trying to simulate two different things: 1. Injection of a liquid through a small tube that connects to a larger tube with a wire inside. 2. Injection of air...
View ArticleStudy1 is sweep of the wavelength and the consequence is used in Study 2, but...
Hello all ! I'm puzzled that how to calculate the EQE of the solar cell , I used the light(rf module) to calculate the G (sweep of the wavelength) and electrostatics1 to calculate the phi0; two...
View ArticleHow to define a variable with simulated result
Hi, everyone, I am trying to run COMSOL file in COMSOL 4.4. My file originally works in COMSOL 3.5, but when i run it in COMSOL 4.4, one variable appears to be orange and I cannot get any result. I am...
View ArticleDroplet evaporating by using Transport of Diluted Species/COMSOL v5.2
Hi all, I am working to model the evaporation of sessile droplet, and I am facing some problems with this modelling. So, my question is that does the Transport of Diluted Species enough to model the...
View ArticlePrevious Solution as Constant
Hey all, I have a question regarding a multiple study setup. I would like to use the last value of a variable defined in one study as a constant in a variable for the next study. So for example: My...
View ArticleHow can I track a route of object's movement?
Sorry for my bad English :( What I want to do is analysis the ball's movement which is on the rotating horizontal disk. But, I'm very new to Comsol. How can I track a route of ball's movement? I've...
View ArticleNo "Solution store" in my model.
There is a "Solution store" in the case library. But when I created a model step by step just like the case library said, under "Study 1" there was only "Solution 1". From the case library's microwave...
View ArticleError while getting intial Value
I am trying to model a CNTFET in COMSOL. I have included the Semiconductor physics module and have been following the same steps as those given in the DC characteristic of MOSFET example in the...
View ArticleGetting simulation results at certain points
Hello, I am trying to get the results of my simulation only at certain points in my model. I started with using point probes, which returns me a table with all values I want and I can also export them....
View ArticleModelling edge cracks
Hi, I am new to Comsol. I am trying to model stress intensity factors around a crack. All the variables I have set up thus far works, such as strain energy density, traction vectors and the so called...
View ArticleMagnetic Flux Density Around a current carrying conductor
I am using Comsol 5.0. How to model and simulate the magnetic flux density around a current carrying conductor? Please explain the step by step procedure. Thank you.
View ArticleMaterial removal
I am trying to simulate material removal in Comsol. My aim is that I want the material removal in the material after the temperature goes beyond its melting temperature. I have been trying to change...
View Article