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Determing the hydraulic diameter of a non-circular channel

Hello,I am quite familier with comsol, and i have a question in the field of microfluids. I am trying to simulate a microchannel which does not have circular cross section. Is there a way or an...

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Coupling Of Two Physics

HiI'm Sai and I want to couple transport of dilute species,laminar flow and geometrical optics for characterizing the mixing of two different liquids in micromixer using an optical sensor.But I did not...

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what dose "ramp interface continuation parameter" do?

Regards the official example of "Heterojunction 1D" under Semiconductor Modula.In Study 3, two study steps were utilized. the first one "In order to get a faster convergence, use the continuation...

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Is there any way to directly add index of refraction to a material?

Hello, I am trying to create a blank material with a specific index of refraction. I have looked through the "add properties option" and I cannot find an index of refraction.I have been able to find...

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Parametric Sweep with Heat Transfer - Initial Values

Hi all,I am simulating the heat transfer into a plate with a section of the plate shrinking with time. I would like to perform a parametric sweep that uses defined initial temperature values for the...

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Visualization of particle tracing results in non-flat surface

Hello,I have a 3D hydrological model which I have used Darcy's Law to do the groundwater analysis. Then I used Darcy's law results as in Partcle tracing for fluid flow. My model has 3 different layer...

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How can I define the coil with current to active my motor

Dear allI cannot find a good way to define the coils in my motor. I use rmm to do my simulation. Have any try to define your coils with variables? Under the condition of infinitite time, how can I use...

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Why the error: "the last time step does not converge"?

Why the error: "the last time step does not converge"?

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Laser heating time dependent study doesn't change with time.

Hi,I'm kind of new to COMSOL and I'm trying to model the laser induced heating of a silicon wafer. I've looked at the laser heating tutorial given by COMSOL but I'm more interested in the conduction...

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Partitioning 3D Anatomical Geometry

I am doing research on atrial fibrillation and working on creating a 3D anatomy of the heart and some surrounding organs in Materialise MIMICS and 3-Matic in order to export my geometry to COMSOL in...

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Comsol client for android

hi! whats comsol server in this app?

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Post-processing a model

Hello, I am a newbie to the COMSOL Multiphysics.I am working on a porous Piezoelectric model and the simulation of the model was sucessful. The results of the von mises stress were acceptable. I want...

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How to simulate Shape Memory behavior of Shape Memory Polymers?

Shape-memory polymers (SMPs) are polymeric smart materials that have the ability to return from a deformed state (temporary shape) to their original (permanent) shape induced by an external stimulus...

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Parametric sweep with 3D imported from 2D

Hello,I have a 3D object, made by importing a 2D object and rotating it. The 2D object has multiple parameters in a separate component. (I did this by following the video lecture of making 3D out of 2D...

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Modeling electrochemistry system without electrochemistry module in Comsol

I am working on electrochemistry stuff but I am using the Comsol without electrochemistry module. How can I put equation to calculate impedance for my model based on various frequency. Also, how can I...

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Could you please let me know what are the steps to follow to solve the 3D...

I'm a beginner in using COMSOL Multiphysics. I want to solve the 3D helmholtz eigenvalue with Dirichlet boundary condition using COMSOL. How to model COMSOL Multiphysics ? For example, how to compute...

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Changing the resistivity of the Silicon Material

Hello,I am fairly new to COMSOL and I am using Semiconductor physics module, I need to change the resistivity of my material Can you please let me know how to do that.Thanks very much!

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Simulating transport of diluted species with a droplet inside the domain

Hi all, I'm simulating mixing of two streams with a droplet (please see the attached image), which means that I don't want COMSOL to solve tds inside the droplet (the black circle in the image.) I've...

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Solving Linearized Euler Equation in frequency space using Weak Form PDE module

Hi,I am trying to solve the Linearized Euler Equation (LEE) in frequency space using 'Weak form PDE' module. For 1-D, uniform mean quantity assumptions, the LEE is given by:Momentum:...

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Strain Gauges. Suggestion to pick the Right One

I'm attempting to figure out how to pick the right strain gauge for my application and checking out I see a great deal of data and I can wade through that, generally, to get what I need yet there are a...

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