AC DC Module in COMSOL Multiphysics. Learn all the important working, principles, features, conditions on which COMSOL Multiphysics AC/DC module works. This blog is a good start to understand what the module is capable to do in terms of simulations and results. Hope people who are starting in the work of simulations in COMSOL will find this blog useful. The AC/DC Module can model and simulate electric, magnetic, and electromagnetic fields in statics and low-frequency applications. You can also perform time-dependent studies. AC DC Module in COMSOL Multiphysics module can be used to model nanodevices or human size devices depending on its settings and boundary conditions.
Lets answer few key points which people need to know before they get started learning COMSOL Multiphysics.
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Prerequisite to use AC DC Module in COMSOL Multiphysics ?
- Good understanding of electrical circuit
- Good understanding of how resistance works
- Good understanding of how Resistance, capacitor, Inductor works at different frequencies
- Good understanding of LCR circuits
- Good understanding of Boundary conditions, grounds
- Good understanding of terms such as "current course", "Voltage source"
- Good understanding how the system should behave (at least a rough idea)
What is AC DC Module in COMSOL Multiphysics ?
Engineers and scientists use the AC/DC Module to study, predict, and design electric and magnetic fields in static, low-frequency, and transient applications. These types of simulations lead to more effective and successful products and engineering techniques. It helps users to predict electromagnetic field distributions, electromagnetic powers, and power dissipation in a proposed design quickly and accurately. COMSOL aims to reduce costs and can test and forecast entities that are not immediately observable in experiments, compared to conventional prototyping. It also allows for the testing of operating environments that would kill or endanger a real prototype.
AC DC Module in COMSOL Multiphysics - Feature
Along with conventional circuit-based simulation of passive and active systems, the AC/DC Module includes stationary and dynamic electric and magnetic fields in two-dimensional and three-dimensional spaces. Maxwell's equations or subsets and special cases of these, as well as material laws such as Ohm's law for charge transport, are used in all modelling formulations. The modelling capabilities are accessed through a collection of predefined physics interfaces, defined as AC/DC interfaces, that enable you to create and solve electromagnetic models. Electrostatics, DC and AC current flow, magnetostatics, AC and transient magnetodynamics, and AC electromagnetic (full Maxwell) formulations are all included in this module.
How does AC DC Module in COMSOL Multiphysics Work ?
The majority of AC/DC interfaces formulate and solve Maxwell's equations in differential form, along with initial and boundary conditions. The equations are solved using the finite element method with numerically stable element discretization, as well as state-of-the-art preconditioning and solution algorithms for the sparse equation systems that emerge. The boundary element approach is used to solve two of the AC/DC interfaces, which are based on boundary integral formulations of Maxwell's equations.
Results in AC DC Module in COMSOL Multiphysics
The results are displayed in the graphics window as predefined plots of electric and magnetic fields, currents, and voltages, as well as derived tabulated quantities (for example, resistance, capacitance, inductance, electromagnetic force, and torque) produced from a simulation.
Overall Workflow AC DC Module in COMSOL Multiphysics
- Define the geometry for your model
- Select materials for your gempetry
- Select a suitable AC/DC interface for your model
- Define boundary and initial conditions properly
- Define the finite or boundary element mesh (depending on your model)
- Select a solver (stationary, time dependent etc)
- Visualize the results after the simulation is complete
- Extract results and plots as per requirement
- Voila ! you have successfully ran your simulation
Official COMSOL website HERE . AC/DC Module official page HERE.
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2 replies on “Introduction to AC DC Module in COMSOL Multiphysics”
[…] can check my other AC DC module blog […]
[…] model geometry must be “watertight” when using finite element analysis. Geometries from computer-aided design (CAD) aren’t usually employed for analysis. This means […]