Parametric Simulation with Automated Datasets and Plots?
Hello, undergraduate student and novice Comsol user here. I'm working on a parametric simulation and I'm finding the process of running the simulation, and then having to define all the datasets (for a...
View ArticleHow to calculate the water saturation in the period of water injection to...
I just start to learn COMSOL4.2a.I want to simulate the process of water injection in oil production. Two phase darcy flow is applied in reservior.When water is injected to the reservior at the...
View ArticleMeshing a twisted wire
Hi, I'm trying to model the flow of current in a twisted wire. The inner rods are of steel, the outer of Al (see attached file). The steel rods are twisted clockweise, while the Al rods are twisted...
View ArticleThermal stress for piezoelectric material
Can anyone tell me that how can i apply thermal stress to piezoelectric material so that I can couple heat transfer and Piezoelectric Devices?
View ArticleCan't integrate normal current density nJ over internal boundary
Something I can't understand. See the attached trivial model. In Surface Integration 1, if I select ec.nJ from the menu, I get an error message (same with trying to plot it or export it), but if I look...
View ArticleReactive transport of two species
Hi, I have two streams of water flow into the same conduit under laminar conditions where they mix by diffusion. Flow is from left to right and compound A enters at the top half, whereas B enters along...
View ArticleSingle phase laminar flow
Hello Does anyone know the reason why flow occurs from low pressure inlet to high pressure outlet without a pump or any external source?
View ArticleTime Simulation of QCM
Hi Everyone, In this moment, I'm working with a QCM model created by COMSOL that you can see in this link: www.comsol.com/model/thickness...ar-mode-quartz-oscillator-4707 At moment, I'm trying to...
View Articlesingularity. error
Hi all: I am a beginner in comsol. I have tried to execute my problem . I am using 3.4 version. I have this error error Time 0 : Repeated error test failures.May hae reacherd a singularity. last time...
View ArticleTime integration from (t-T) to t of displacement in a time dependent study...
A transient model is under development which compacts a material from beneath and above (The force from above are in opposite phase with the force from beneath (two half wave rectified sine waves in a...
View Articledesigning of a tactile sensor using comsol
hi can anyone please help me in designing a tactile sensor 1. can v fabricate a sensor 2. how to place a piezoresistor
View Articlepositive column 2d
Hi, I am trying to create a plasma simulation using a gas mixture of argon and oxygen and nitrogen. To start I took the positive column 2d model and changed the cross section from Argon to Oxygen. Then...
View ArticleHow to model laminar and turbulent flows separated by a porous medium?
I am trying to simulate a problem involving fluid flow in 2 channels separated by a porous medium. The 2D geometry consists of 3 flat domains on top of each other. The one in the middle is a porous...
View ArticleHeat flux across the wall, thermal bridge
Hallo my dear friends! I am a student of architectural university, I need for a one project to use Heat Transfer und solve this problem. I think for you, experts, it is not a problem and you can help...
View Article1d line plot help
I have a rectangular solid (x=1m, y=.5m, z=1m, corner at origin) and I did a heat transfer study on it, where the z=1m surface was at 450K and z=0m surface is at 200K. I then plotted a 2d slice at...
View ArticleFailed to find consistent initial values. Last time step is not converged.
Hello I am a new user and I am running a natural convection cooling problem. I get below error "Failed to find consistent initial values. Last time step is not converged" How do i debug this error?...
View ArticleConvergence at high Velocity
Hello, I am trying to develop a model of nozzle flow into a cavity. I have a model that I am able to run at low velocities (0.1 m/s), but have not been able to get a higher velocity (~50 m/s) version...
View Articleheat transfer in ultra-thin membrane
I had trouble with meshing. When I used pre-defined mesh, it kept gave me warnings if I chose 'extra coarse'. I went ahead and ran simulations anyways, but it gave me error saying that the computation...
View Articlerigid particle carried by a channel flow
Hi I have to simulate the displacement and rotation of a rigid prticule in a fluid flow and I am not a professional on comsol. So, is there anyone who could help me? or if you have any examples of this...
View ArticleCOMSOL incapable to calculate static pressure in a confined fluid?
COMSOL incapable to calculate static pressure in confined a fluid volume and its interaction with the confining container walls both resulting from differing thermal expansions ? I'm a bit surprised,...
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