Heat Transfer with PCM (phase change material)
Hello, I have been implemented some 2D simulations of Heat Transfer in Solid with PCM. In my case I have the PCM (solid-liquid) inside a rectangular container which is subjected to a time-varying heat...
View ArticleDiscretization toggle cannot be found under show?
Can anyone tell me where to find the discretization toggle? I read it's supposed to be under "show" in the model builder and even saw a screenshot but it is just not there in my drop down menu.
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Problem with Extremly Thin Object
Hello everyone,I'm a beginner with COMSOL and recently got a problem with my simulation. The modell is a thin copper coil, with the section of . The material is copper and the domain physics is defined...
View ArticleAnisotropic Viscosity
I might be missing something obvious but how do I specify anisotropic viscosity in laminar Flow(spf) module? Any help is appreciated.
View ArticleHow to calculate the change in temperature of a point in the surface of the...
Dear All, I am a beginner in COMSOL thermo-optic field. I want to calculate the change in temperature in a waveguide. I created a waveguide structure having a rectangular core and cladding with heater...
View ArticleUndefined material property 'E' required by Linear Elastic Material 1
This should be really easy but its driving me nuts. This is the error I get when I hit compute:Undefined material property 'E' required by Linear Elastic Material 1 - Plot: surf1 (Surface)I'm sure I...
View ArticleComsol Beam Displacement Solution Very Off
To verify my comsol results, I evaluated a round solid aluminum beam with the following specifications and load case:beam diameter: 28mm beam length: 300mmPhysics: The beam is extruded in the...
View ArticleCheck orthogonality of fiber modes
I simulated a few mode fiber in COMSOL and use maximum mesh size of 0.15 um to all domains to ensure accuracy of mode profile. I exported the electric field of the modes in x and y directions with grid...
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Electric Field normal to a Surface
Hi! I have a surface with an inclination of 9 degrees in an axisymmetric system of coordinates. I know that using -Vr and -Vz I get the electric field according to r and z. However, I want to get the...
View ArticleTrouble modelling fluid flow (air) between two roofs of a biogas plant
Hello!I am currently modelling heat loss in a biogas plant (manure digester) placed on a farm. The digester is cyllindrical in shape, with a double domed roof. Between the two roofs, air is pumped...
View ArticleStatic Loading and Voltage generation curve on PZT material
Hi,I need to model a Direct Piezoelectric effect, with a ramp load followed by static load and get the electric potential generated.Practically, Under such load PZT material must decay its potential...
View ArticleHow can we make an animation with 3D plot in 1-D environment
I'm new to COMSOL and watched the animation videos tutorials, but to work they aways have the options "Time" in "Loop over", over "Animation Editing".I've realized that for this to be possible, it is...
View Articledesign of gas sensor in comsol
sir, I want to model and simulate gas sensor for detection of some harmful gas.How to made sensor with given width and distance between electrodes on substrate? And it's state of art like physics...
View ArticlePROBLEM WITH INDUCING CURRENT IN A MOVING CONDUCTOR PLACE IN CONSTANT...
I have placed a moving aluminium conductor in a constant magentic field produced by a coil excied with constant voltage. I am unable to get any induced currents in the conductor. I am using magnetic...
View Articleheat source
Hello,with modesty, I am trying to model the a pulsating heat source at the nanoscale . the heat source in a spherical form is inside another sphere . IN pi / 2 the heat released is 20mK in a very...
View ArticlePartition coefficient and slope of liquidus line
Hello, everyone. Recently, I have been doing the macrosegregation during solidification process of binary alloy. At present, I have opened three modules: laminar flow, heat transfer and dilute matter...
View ArticleWhich modules should I choose
hi,What modules are needed to simulate droplet impact on a rotating disk with oil filmThank you in advance for your answer!
View ArticleWhich modules I need to select?
A droplet with a certain initial velocity is simulated to move with the rotating disk from the inlet.The interaction between the droplet and the pipe needs to be considered.Which modules should I...
View ArticleAir levitation
I am trying to achiveve an air levitation and hopefully try and monitor the oscillations and vibrations caused on the body during the levitation. I need some ideas on how to create this in the simulation.
View ArticleMoisture Transport, Thin Moisture Barrier, Comsol Version 5.3
Is there any known way to link the inputs like vapor permeability or vapor resistance factor to material properties like diffusion coefficient (m^2/s) of water in a certain material or gas permeability...
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