All three books are available in pdf and html versions from the comsol help desk. Software for simulating static and lowfrequency electromagnetics. Is there any way to modeling ac and dc magnetic field simultaneously without using timedomain in comsol. Although these devices are principally characterised by electromagnetics, they are also affected by other types of physics. The ac dc module physics interfaces are fully multiphysics enabled, which means you can couple any simulation in this module to an arbitrary simulation defined in any of the comsol multiphysics interfaces. Note that many of the examples featured here can also be accessed via the application libraries that are built into the comsol multiphysics software and available from the file menu. The use of the ac dc module the ac dc module can model electric, magnetic, and electromagnetic fields in statics and lowfrequency applications. To help the learning process, there is a streamlined.
Mar 03, 2016 one of the most common uses of the ac dc module is for modeling electromagnetic coils and the interactions with their surroundings. Feedback from users like you helps us continuously enhance comsol multiphysics and comsol server with the functionality you need most. When modeling the linear or tubular device with the magnetic fields and the moving mesh physics interfaces, it is appropriate to use a customized linear periodic boundary condition. Electromechanical system applications and optimization and is more than your average textbook. The electrical field distribution around three 380kv ac systems and one 400kv bipolar dc system is analyzed. The series is intended both for experts looking to get up to speed on how to model such applications in the comsol. This book contains reference information such as application mode. Introduction to acdc module budapest university of. The coil current calculation functionality available in previous versions of comsol multiphysics has been replaced with a new coil geometry analysis functionality. For example, vac vsin2pift, where v amplitude, f frequency, t time variable.
The documentation set for the ac dc module consists of two printed books, the ac dc module users guide and the ac dc module model library, and this ac dc module reference guide. Server, ac dc module, rf module comsol server manual pdf introduction to comsol multiphysics pdf. Rf module updates for users of the rf module, comsol multiphysics version 5. How to model electromechanics in comsol multiphysics. This stepbystep instructional video shows you how the electromechanics interface in comsol multiphysics couples and solves mechanical and electrical problems. Feel free to check it out and comment below or ratelike to this post if it is helpful.
Physik instrumente usa precision motion control 247,370 views. Img workshop introduction to python for research part 1 thursday, april 16, 2020 4. When you expand comsol multiphysics with the acdc module, you unlock features for. Volume 3 of 4 module 7 basic ac theory this module describes the basic concepts of alternating current ac electrical circuits and discusses the associated terminology. A third book, the acdc module reference guide, contains reference material about application mode implementations and commandline programming. The book in your hands, the ac dc module model library, provides details about a large number of readytorun models that illustrate realworld uses of the module.
This model is based on acdc multiphysics modeling and employs the use of physics first principles for its solution with inductive conductivity measurements using comsol 4. Computational electromagnetics modeling, which module to. When you needed to solve your models faster, wanted more visualization options, or when you hoped for a quicker way to model your application, you told us about it. The ac dc module offers automatic, semiautomatic, and adaptive mesh generation. Acdc module users guide and the acdc module model library, and this ac dc module reference guide. Electromagnetics modeling in comsol multiphysics the ac dc and rf modules. The acdc module physics interfaces are fully multiphysics enabled, which. For users of the acdc module, comsol multiphysics version 5. Acdc module updates for users of the acdc module, comsol multiphysics version 5. We have demonstrated a control scheme that enforces both a current and voltage maximum, implemented with global equations and the terminal boundary condition. Comsol, comsol desktop, comsol multiphysics, and livelink are registered trademarks or trademarks of comsol ab. Jan 16, 2015 we have created a video tutorial for those of you who are new to the comsol multiphysics simulation software and need an introduction on how to use it.
Display and edit only the most important simulation parameters synchronize or importexport parameters and variables between excel and comsol multiphysics. Under the hood, the acdc module formulates and solves maxwells equations using fem, bem, or a combination of both methods, in concert with stateoftheart solvers. Closing remarks on using the ac dc module to control current and voltage sources. This electrostatic interface is also available in comsol multiphysics, and its appropriate for computing the electrostatic fields around devices, such as capacitors time and frequency domain electric field modeling with the ac dc or mems modules.
You can supply an ac voltage to your model simply by entering a function for ac. Today, we will look into one of the key concepts to keep in mind when modeling coils. Comsol multiphysics is a generalpurpose simulation software for modeling designs, devices, and processes in all fields of engineering, manufacturing, and scientific research. Comsol is the developer of comsol multiphysics software, an interactive environment for modeling and simulating scientific and engineering problems. How to model structural mechanics in comsol multiphysics. This lumped port type can be used for multiexcitation or multitermination of, for example, a coplanar waveguide port or a differential port. The transmission line parameters r, l, g, and c can be used to characterize any tem and quasitem waveguide structure.
Tutorial for running comsol files from comsol website. In addition, i advise you to follow the model examples presented in. Ac dc modeling 2 days march 12 get an introduction to modeling static and lowfrequency electromagnetic systems using comsol multiphysics and the ac dc module and learn how to model resistive, capacitive and inductive components, electromagnetic forces, shielding and electromagnetic heating. By simulating electric, magnetic, and electromagnetic fields in static and transient applications, you can virtually design and analyze capacitors, inductors, insulators, coils, motors, sensors, and more.
Modeling natural and forced convection in comsol multiphysics. To access any comsol files, you need to have a comsol account which can be created for free. This particular module solves problems in the general areas of electrostatic fields. Model and pdf to open the model in comsol multiphysics and a pdf to read. Feb, 2016 part 1 of an elementary tutorial for comsol multiphysics ver.
Once connected to circe, you can open comsol using the steps below. Updates include new functionality based on the boundary element method for modeling magnetostatics, a new material model to simulate soft permanent magnets, new functionality for describing moving and deforming domains, and more. The acdc module offers automatic, semiautomatic, and adaptive mesh generation. The documentation set for the acdc module consists of two printed books, the acdc module users guide and the acdc module model library, and this acdc module reference guide. Finally, each example in the heat transfer module model library as well as in the heat transfer module users guide comes with the software as a loadable comsol multiphysics model mphfile with the extension. Electromagnetics modeling in comsol rf module highfrequency modeling microwave heating acdc module statics and lowfrequency modeling induction heating plasma module model nonequilibrium discharges mems module statics subset of acdc module advanced statics electromechanics. High voltage parallelplate capacitor design using solidworks and comsol. The acdc module provides a unique environment for simulation of acdc. In this archived webinar, learn about the new features in the ac dc module for version 5. This increases the flexibility and the modeling capabilities of the physics interfaces.
Acdc module application gallery examples comsol multiphysics. In this set of six tutorial models and associated documentation, you can investigate the capacitive, inductive, and thermal properties of a standard threecore leadsheathed crosslinked polyethylene, highvoltage alternating current xlpe hvac submarine cable 500 mm 2, 220 kv. This reduces the workload by a factor of two when setting up a new userdefined material by starting from, for example, the soft iron material in the material database of the ac dc module. This benchmark model exemplifies the 2d axisymmetric formulation of the electromagnetic waves, frequency domain interface that is available with the rf module. One of the most common uses of the ac dc module is for modeling electromagnetic coils and the interactions with their surroundings. Oct 06, 2015 the rotating machinery, magnetic physics interface available in the ac dc module is used to model rotating machines such as motors or generators. Define and solve models for studying systems containing fluid flow and fluid flow coupled to other physical phenomena with the cfd module, an addon product to the comsol multiphysics simulation platform. Simulate fluid flow applications with the cfd module comsol. For users of the design module, comsol multiphysics version 5. Under the hood, the ac dc module formulates and solves maxwells equations using fem, bem, or a combination of both methods, in concert with stateoftheart solvers. For users of the ac dc module, comsol multiphysics version 5. This tutorial addresses the fluid mechanics problem of determining the entrance length for fully.
A new lumped port type is included in comsol multiphysics version 5. It is available in html and pdf format from the comsol help desk. Apr 28, 2017 this type of modeling can be done with either the heat transfer module or cfd module. Comsol multiphysics is a powerful simulation software that uses finite element method fem to simulate multifield problems. As soon as you want to model timevarying electric fields, you will want to look beyond the core package. This book in the multiphysics modeling series present the reader with a solved problem that utilizes the acdc module. To download the mphfiles, log in or create a comsol access account that is associated with a valid comsol license. This app computes r, l, g, and c as well as the characteristic impedance and propagation constant for coaxial, twin lead, microstrip, and coplanar waveguide transmission lines. Control current and voltage sources with the acdc module. Electrostatics, boundary elements the new electrostatics, boundary elements. Comsol post processing how to plot ac voltage vs time in comsol. I am new to comsol and i want to model fluid flow in stress field. Learn how to use comsol multiphysics and the structural mechanics module by conducting a static analysis of a mechanical structure. Features includes ac adapter for fast charging of power bank.
This chapter introduces you to the capabilities of the module including an introduction to the modeling stages and some realistic and illustrative models. This chapter introduces you to the capabilities of the acdc module including an introduction to the modeling stages and some realistic and illustrative models. The acdc module sets the stage for modelling the performance of capacitors, inductors, motors, and micro sensors. The cfd module provides tools for modeling the cornerstones of fluid flow analysis, including. The video tutorial featured in this blog post shows you how to set up and run a simulation using comsol multiphysics. Comsol multiphysics quick start and quick referencethe book you are reading, provides a quick overview of comsol s capabilities and how to access. The user interface for this new functionality is almost identical to the old one, so users familiar with the previous coil current calculation functionality will already be familiar with the usage of the new version. This book in the multiphysics modeling series present the reader with a solved problem that utilizes the ac dc module. Piezoelectric simulations with comsol multiphysics youtube. In this paper a field calculation program called comsol multiphysics is used. Extensive information about command line modeling using comsol script is available in yet another book, the comsol multiphysics scripting guide.
In addition to using multiphysics modeling for your own projects, you can also turn your models into simulation applications and. Alternatively, for windows, mac, and linux users, comsol can also be launched through a remote desktop connection, then opening a terminal, loading the appropriate module file, and typing comsol. The acdc module can model electric, magnetic, and electromagnetic fields in. For more information on how to work with the comsol multiphysics graphical user interface, please refer to the comsol. Simulate static and lowfrequency electromagnetics with.
Im not sure how your model is setup, but if you have entered a dc voltage you can change the function to ac. New book on topology optimization for electromagnetics. Does anyone know what is the boundary condition applied at each node of the mesh when choosing the floating potential boundary condition in comsol electrostatics in ac dc module. The magnetic fields physics interface in the acdc module, and the corresponding 2d interfaces in the core comsol multiphysics software, can now use external material models implemented as userdefined dynamic libraries. Several types of finite element and boundary element mesh elements are available. The terminology in the book should be familiar to you. The design module, thermoelectric effect module, heat transfer module and ac dc module of comsol multiphysics software is used to simulate and predict thermoelectric power output. Acdc module comsol multiphysics sales and support in. Review all of the acdc module updates in more detail below. Simulation of the electromagnetic field in a high voltage generator in an xray device. Review all of the rf module updates in further detail below. Modeling linear motors or generators in comsol multiphysics. With comsol multiphysics and the ac dc module you can model static and lowfrequency computational electromagnetics. Theres a new book out there for those of you who work with or research electromechanical system design.
In his keynote talk at the comsol conference 2018 lausanne, andri bezzola of. Is there any way to modeling ac and dc magnetic field. You can use these examples as a starting point for your own simulation work by downloading the tutorial model or demo app file and its accompanying instructions. Comsol multiphysics tutorial and demo app files comsol server manual pdf introduction to comsol multiphysics pdf. Tutorial for running comsol files from comsol website step 1. Module 6 dc motors this module describes the types of dc motors and includes discussions of speed control, applications, and load characteristics. This stepbystep instructional video will guide you through the modeling workflow, with an emphasis on structural mechanics modeling. Multiphysics but tracing charged particles benefits from the acdc module, as it. An example of computing air flow and temperature within an enclosure. Modeling computational electromagnetics with the acdc module. The multiphysics capabilities of the comsol software make it possible to investigate the impact of other physical effects, such as heat transfer, structural mechanics, and acoustics, on an electromagnetics model. The tutorial calls for finding the resonant frequencies and fields inside an axisymmetric cavity with rectangular cross section and perfectly conducting walls.