Electrostatics Non Zero Values
Hello, I have run some static module-based models and have tried to look at 2D graphs of potential and electric fields.I have set up a parameter scan over a series of initial voltages and tried to...
View ArticleError in solving multiphase flow in porous media
Hello, I am solving for multiphase flow in porous media.. which couples 2 physics- darcy law and phase transport in porous media.. I have to solve for two saturations and two pressures in two phases. I...
View ArticleStart Time Dependent Study With Initial Conditions From A Time Dependent...
Hi everybody !I am solving a simple case of fluid mechanics using modules "Laminar Flow" and "Transport of diluted species". The case is simple : I inject a fluid (water) in a network (concentration =...
View Articletwo plates connected by point welding
Hi, I want to simulate a modal study of a two-plate structure whose plates are connected by point welding aroung their sides. The other parts along the sides should be in contact. How could I simulate...
View ArticleApplying open boundary (Fixed head) in Darcy's Law for fluid flow
Hi,I have a 3D hydrological model in which I would like to assume the open boundary (fixed head boundary) for the lateral surfaces of my model. Therefore, the head for any arbitrary point on lateral...
View ArticleHow to set the connection of the thread in a helix structure
Hi All,I need to set a model that is a helix structure for electromechanical simulations. There is no distance between each thread of the solenoid, which means each thread is connected at the tangent...
View ArticleWhy do the Joule heating and heat transfer modules return different heat...
Hello, I am tesing a simple heat model using both the joule heating and heat transfer modules. My objective of the simulation is to estimate the temperature increase in box surface as a function of the...
View ArticleHall effect in Semi conductors
HiI simply want to model the Hall effect in a semiconductor. What is the best way to do that?So far, I have built a 2D model with a rectangle of n-type InAs with the semiconductor module. I pass a...
View ArticleResonance of a Base-Excited Mass-Spring-Damper System
Hello,I am trying to model a system that involves a seismic mass mounted on a foam spacer, which is in turn mounted on a shaker. Therefore, the system can essentially be described as a base-excited...
View ArticleHeat transfer and Fluid flow
Hello I'm trying to simulate a block material which is put in a laminar flow. What I want to study is the termodynamic of the system ( because the fluid and the material have different temperatures)...
View ArticlePlane wave Pressure amplitude frequency dependent
Hi, I am trying to model a plane wave which has a varying pressure amplitude. I was wondering if it is possible to model a plane wave which is frequency dependent and related to for example a frequency...
View ArticleComsol in Mac
Comsol is not working MacBook pro I thought it may be the system issue so I also contacted Apple technical service but they told me that there is no fault in the system. So, can anyone tell me a way to...
View Articleimplementing reduced pressure in the modeling of the natural...
Dear All,does anyone know how to implement something similar to " reduced pressure option available in comsol 5.2a or later" in older versions in the modeling of a non-isothermal flow with natural...
View ArticleCooling after a certain time of heating
Dear Collegues,I have a simple model with three objects. I set up a heat source to one of those and i am interested to plot the cooling process (temperature plot) after certain time in all objects.I...
View ArticleError while plotting a Cut point 3D
Dear Collegues,I am new user of Comsol. I try to plot the temperature of a specific point (Cut point 3D in 1D plot) but an error shows up."Operation cannot be performed on data set cpt2 (Cut point 3D)....
View ArticleThermal Expansion
The below post is related to an [archived discussion](/forum/thread/39909/adding-thermal-expansion) [start here]I have COMSOL 5.2 and am using the Structural Mechanics Module for the Physics. There is...
View ArticleHow can I avoid electromagnetic waves entering from the sides?
Hello to allI'm failing in simulating the fresnel equations in 2D as a small exercise with Comsol.As you can see in the model added to this post, the reflectance and transmission in the global plots...
View ArticleError with multi turn coil
Could not determine the center of the circular coil.Getting this error when i try to build 3d multi turn coil with ferrite barPlease help me to resolve this https://ibb.co/r381CtY
View ArticleThere is no domains in my model when I delete some undesirable surface.Thanks...
I want to delete a circle in a cylinder.So I do a boolean operation between two cylinders,and deletes some face between them.But after that,there is no domains in my model.
View ArticleSubmarine cable model
Hello! Cable losses in official submarine cables follow the law of conservation of energy, that is, the sum of core loss plus metal sheath loss plus armor loss is equal to three times the square of...
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