FSI Module Boundary Conditions
Hi All, I'm using the FSI module (Fluid Structure Interaction) to simulate a sphere in a fluid. My problem is that I want to simulate an elastic sphere rotating in a viscous fluid. So, I've created my...
View ArticleHow to activate/deactivate the "equation view" in Comsol 5.2?
In some of my models I can see the equation view under each physics node but for some others, I can not see that. I use the same software. How can I hide or unhide this feature?
View Articlerange of electrical field
Hi every one i have question about the coloring range of plot .i have result for one geometric for electrical field , the comsol gives me the results with coloring range. also i have second geometric...
View ArticleFreqency-Transient Study and Segerated Step Problem
Dear all, I’m modeling a laser-alloy particle interaction using Comsol 5.2. A alloy particle of 50um in diameter is placed on a silicon substrate. A laser beam of 5kW/cm^2 is incident from the top. The...
View Articlemodelling of solar cooker
Dear all, I am trying to make the comparison between the two box type solar cooker model. One is having the reflector and another one is having just the box. For the heat source, I am using the...
View ArticleRelative permittivity
I am doing some simulation with Electrostatic module and I face in to problem that I can not find any logic for that. When I decrease the permittivity of my medium from 100 to 1 I will have more strong...
View ArticleGlobal Component To Calculate Capacitance Has Disappeared?
Hello, I am using the AC/DC electrostatics module to calculate the capacitance between two metal lines (a component of the overall detector I am modeling). I defined one of the lines as the terminal...
View Articletwo phase laminar flow in 3d
hi I m supposed to simulate two-phase laminar flow problem (moving mesh). the size of a cyl is , r=5 h=5 The bottom of the cylinder is fixed and the top of the cylinder is moving with a certain speed...
View ArticleCan I pause the calculation and check the intermediate result?
Hi All, Can I pause the calculaiton of COMSOL and check the intermediate result? I would like to check if the intermediate result is reasonable or not. I don't want to only depend on the convergence...
View Article2-D Linear extrusion coupling with 1-D
Hi! I have been trying to use a variable of 2-D component in 1-D component. I am trying linear extrusion coupling. Please can someone give the steps(i.e which and how many vertices should I map). The...
View Articlecalculate the capacitor and inductance in electrical current
Hi all i would like to ask about the calculation of capacitor and inductance in electrical current physics . in electrostatic case i can calculate the capacitor and inductance but the only problem with...
View ArticleModelling laser ablation in COMSOL
Hi, I have a fairly simple question about COMSOL. I have made a model in which a block is heated by a pulsing laser heat source. I am using an iterative approach to solve it by solving for each pulse...
View Articleparametric sweep
HI, I am working on Piezoresistivity, Boundary currents module and time dependent study. I have given a time dependent pressure load in the form of a square wave on a thin plate. Since I intend to find...
View Articlecalculate the conductivity on comsol
Hi i have geometry which has two different material . i would like to calculate the conductivity for all geometry after excitation by using comsol how can i do that thank you
View ArticleCoupling a ODE to the Boundary of a Laminar Flow Simulation
Hello, I'm trying to simulate blood flow in a tube using a mechanical circuit known as the Windkessel model. This model relates outlet pressure to velocity through a set of equations: (1) P = RT*V_avg...
View Article1-D solving problem
Hi All, I am trying a simple 1-D problem, trying to solve a 2nd order differential equation. (Shrinking core model) The problem I have is that one of my BC contains the dependent variable, which is to...
View ArticleChange name of independent variable
I am solving general PDE in coordinates (x - position, v - velocity). Is there possibility to set name of independent variables to (x,v). By default are independent variables (x,y). Thanks for advice...
View ArticleLooped Electro Thermal Simulation in the Frequency Domain
Dear all, I'm currently trying to perform an electro-thermal simulation, where I calculate the average joule heating in the frequency domain and use this result in a time dependent study calculating...
View Articlefailure to find solution in newer version of COMSOL
Hi, I am a student with very minimal experience with COMSOL (most of what I know, I have learned just from experimenting with the program). I am modeling fluid flow through a flow chamber (see attached...
View Articleread initial conditions for laminar flow problem from external file.
Hello, First of all, I like to apologize if this is a fundamental question but I cannot find an answer to it and I am new to Comsol. I am running a 2D laminar flow problem and have to integrate over...
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