COMSOL

The origin of COMSOL: COMSOL was first a toolbox of Matlab called Toolbox 1.0. Later renamed Femlab 1.0 (FEM is finite element, LAB is used Matlab), this name has also been used in Femlab 3.1.

Up to now, COMSOL currently has a basic module and eight professional modules: Structural Mechanics Module, Chemical Engineering Module, Heat Transfer Module, Earth Science Module. , RF Module, AC/DC Module, MEMS Module, AcousTIcs Module. And the COMSOL ReacTIon Engineering LAB, Signal & System Lab, Opti Mimiza TI LAB, CAD Import Module, and COMSOL ScriptTM.

Basic Information

COMSOL is an advocate and leader in multi-physics modeling and simulation solutions worldwide. Its flagship product, COMSOL Multiphysics, enables engineers and scientists to give design ideas a life through simulation. It has unparalleled ability to make all physical phenomena perfect for reproduction on a computer. COMSOL users use it to improve the reception performance of mobile phones, use it to improve the performance of medical devices and provide more accurate diagnosis, use it to make cars and aircraft safer and more energy efficient, use it to find new energy, use it to explore the universe, Even use it to train the next generation of scientists.

COMSOL Multiphysics originated from MATLAB's Toolbox and was originally named Toolbox 1.0. Later renamed Femlab 1.0 (FEM is finite element, LAB is taken from Matlab), and the name has been used in Femlab 3.1. Since the 3.2 version in 2005, it has been officially named COMSOL Multiphysics.

Starting with the 3.2 version, it was officially named COMSOL Multiphysics, because COMSOL introduced a series of related softwares such as COMSOL Script and COMSOL Reaction Engineering in addition to Femlab. These two softwares are also equivalent to Femlab's toolbox, in order to meet the higher requirements of researchers. For example, in COMSOL Script, you can program the model you want and solve it yourself. You can also program a new software for this major based on COMSOL Multiphysics, which is a secondary development tool. So COMSOL is just a company name, and the software name should be COMSOL Multiphysics.

Multiphysics translates into multiple physics, so the advantage of this software lies in the multiphysics coupling. The essence of multiphysics is PDEs, so COMSOL Multiphysics can perform calculations, simulations, and simulations as long as it can be described by partial differential equations.

In 2006, COMSOL Multiphysics was again selected by NASA Technology Magazine as "the best product of the year". The editor of NASA Technology magazine commented, "The winner of the best CAE product selected by NASA scientists, indicating that COMSOL Multiphysics is right. The most valuable and meaningful product in the engineering field."

COMSOL Multiphysics is a large, advanced numerical simulation software. Widely used in scientific research and engineering calculations in various fields, simulating various physical processes in science and engineering.

Based on the finite element method, COMSOL Multiphysics implements the simulation of real physical phenomena by solving partial differential equations (single field) or partial differential equations (multiple fields), and mathematically solves the physical phenomena of the real world.

A large number of pre-defined physical application modes range from fluid flow, heat transfer, structural mechanics, electromagnetic analysis and many other physics fields, allowing users to quickly build models. The model defined in COMSOL is very flexible. Material properties, source terms, and boundary conditions can be constants, functions of arbitrary variables, logical expressions, or directly an interpolation function representing measured data.

Predefined multi-physics application patterns that solve many common physical problems. At the same time, users can also choose the physics they need and define their relationship. Of course, users can also enter their own partial differential equations (PDEs) and specify their relationship to other equations or physics.

COMSOL Multiphysics strives to meet all the needs of user simulation and become the user's preferred simulation tool. It is versatile, flexible, and easy to use. More powerful than other finite element analysis software, software features can be easily extended with additional functional modules.

   How to model COMSOL

COMSOL is widely used in scientific research and engineering calculations in various fields, simulating various physical processes in science and engineering. The following describes the use of the software to build geometric models.

Tools/raw materials

computer

COMSOL Multiphysics software

Model wizard

1Select Model Wizard; 3D

Comsol basics _COMSOL how to model

2 click Joule heat - increase - solve; steady state - complete

Comsol basics _COMSOL how to model

geometry

Click on the geometry to set the length unit: um

Click on the ribbon geometry - work surface; xz plane

Comsol basics _COMSOL how to model

Right click on the work plane - face geometry and select the polygon;

Enter in the polygon coordinates:

Xw: 0 2 8 10

Yw: 0 3.4 3.4 0

Click to build selected

Comsol basics _COMSOL how to model

Click on the work plane - difference set;

Select to add objects, subtract objects (active mouse wheel to select different areas)

Click to create a selection

Comsol basics _COMSOL how to model

Click Geometry - Stretch; set the stretch length to 1.2.

Click Build Selected.

Comsol basics _COMSOL how to model

Click Geometry - Cylinder; set the size (0.4, 5), position (5, -0.6, 0).

Click on the geometric function difference set, set as follows; click Create to select.

Comsol basics _COMSOL how to model

The geometric model is shown

Comsol basics _COMSOL how to model

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