The terminology in the book should be familiar to you. Also referred to as ohmic or resistive heating, joule heating commonly affects material properties, such as electrical conductivity. Jun 02, 2015 joule heating calculates heat energy generated during the passage of electric current through a semiconductor. Comsol heat transfer models multiphysics modeling series. Emboldened by successfully designing the wrench, i went on to the next example simulating a busbar using predefined joule heating physics to couple electrical currents and heat transfer.
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. In some cases, joule heating is pertinent to an electrical devices design, while in others, it is an unwanted effect. For example, in manufacturing processes, they heat up reactive fluids. This simulation is part of the first model example of the introduction to comsol multiphysics book. Electrical induction heating the induction heating process. In this 3rd chapter of a 3part demo you will see how to use temperaturedependent material properties when modeling the joule heating in a fuse on a circuit board. Using the rf module and coupling it with the bioheat. Electrical heating in a busbar assembly application id. Model wizard 1 open comsol by doubleclicking its icon on the desktop. Warning your internet explorer is in compatibility mode and may not be displaying the website correctly.
Browse the threads and share your ideas with the comsol community. Read this book if you are new to comsol multiphysics. It helps designers to spot the overheated areas and make proper improvements to. Heat transfer modeling software for analyzing thermal effects. In these tutorials, linus andersson from the global technical support team here at comsol will show you how to couple the direct current electrical current in a fuse on a circuit board to the heat transfer in it and the surrounding system. Tutorial model of a heating circuit comsol multiphysics. The device in this tutorial example consists of an electrically resistive layer deposited on a glass plate. Fluidstructure interactions involving composite materials can be modeled by combining the shell interface for layered linear elastic materials with. This addon to the structural mechanics module allows you to model laminates and layered materials, with new layered material technology.
Watch to learn how you can easily set up and solve a joule heating simulation using comsol software. Nov 16, 2018 in this webinar you can learn how to simulate transformers with comsol multiphysics software, which is useful for electronics and electric power applications. One of the classic multiphysics couplings in engineering and science is joule heating, also called resistive heating or ohmic heating. It considers heating due to conduction currents and dielectric loss. Emboldened by successfully designing the wrench, i went on to the next example simulating a busbar using predefined joule heating physics to couple electrical currents and heat. Basic comsol heat transfer between two different materials. It also provides a quick introduction to creating applications using the application builder. Ive used the joule heating similar to the tutorial model in comsol, but id like to get results with the rf module as well. Heat transfer rate with electric current using comsol 4. Feb, 20 joule heating in a fuse on a circuit board tutorial, chapter 1 duration.
We discuss methods that involve simple approximations, highfidelity nonisothermal flow coupling, modeling heat transfer at fluidsolid interfaces, boundary approximations using heat transfer coefficients, techniques to fully resolve the flow and temperature fields, and more. A practical guide to geometric regulation for distributed parameter systems eugenio aulisa and david gilliam finite element modeling methods for photonics b. In the case of moving solids, translational terms may also be included in the heat transfer. Induction heating is similar to the joule heating effect, but with one important modification. After completing this tutorial, you can learn more about each step in the modeling workflow through the comsol learning center. A few examples of where this occurs includes conductors in fuses, electronics, power lines, and electric heaters. I want to see the heat transfer characteristics in a steel tube using water laminar flow. A couple of applications that do rely on joule heating include hot plates directly and microvalves for fluid control indirectly, through thermal expansion. Joule heating also referred to as resistive or ohmic heating describes the process where the energy of an electric current is converted into heat as it flows through a resistance. When the model wizard opens, select a space dimension. In this, i am explaining joule heating effect simulation by using comsol multiphysics software.
The layers properties determine the amount of heat produced. The model couples the physics phenomena involved in one way only. The layer results in joule heating when a voltage is applied to the circuit, which results in a structural deformation. Comsol is the perfect tool for simulating mems and piezoelectric devices and applications. The basis of the heat transfer module is the balance of energy in a studied system. Joule heating, also known as resistive, resistance, or ohmic heating, is the process by which the passage of an electric current through a conductor produces heat joules first law, also known as the joule lenz law, states that the power of heating generated by an electrical conductor is proportional to the product of its resistance and the square of the current. After completing this tutorial, watch more videos in our video gallery. The joule heating multiphysics interface couples the heat transfer in solids interface with electric currents acdc module. Sze, semiconductor devices 2nd edition, p 53, john. Excessive heating can result in failure of the device, so modeling with lab test parameters can show if heat is a cause of failure at certain illumination.
Multiphysics modeling of resistive heating in an aluminum fuse on a circuit board. Setting up and running a simulation with comsol multiphysics. The dcinduced resistive heating causes a temperature rise in the actuator, which leads to thermal expansion. Sometimes comsol doesnt get all the old variables out of the unknown list. The comsol discussion forum covers a wide variety of simulation topics. Electrical heating in a busbar in order to get acquainted with comsol multiphysics, it is best to work through a basic example step by step. Overview of simulating joule heating with comsol software. For users of the acdc module, comsol multiphysics version 5. Joule heating in a fuse on a circuit board tutorial, chapter 3. It provides an overview of the comsol environment with examples that show you how to use the comsol desktop user interface and the model builder. The temperature in the busbar rises due to resistive heating. In this second chapter of a 3part demo you will learn how to add physics and solve the model. The contributions to this energy balance originate from conduction, convection, and radiation but also from latent heat, joule heat ing, heat sources, and heat sinks.
The heat transfer module can be used to analyze the effects of joule heating, inductive heating, and microwave heating effects. Jan, 2020 the joule heating multiphysics interface couples the heat transfer in solids interface with electric currents acdc module. Joule heating calculates heat energy generated during the passage of electric current through a semiconductor. This tutorial model of a twohotarm thermal actuator couples three different physics phenomena. Joule heating in a fuse on a circuit board, chapter 2. Particular functionality may be common to several products. Find out how to add physics and solve the model in comsol multiphysics. The currents that heat the material are induced by means of electromagnetic induction. Other multiphysics options include the thermoelectric effect, when combined with the heat transfer module, and joule heating, when combined with both the heat transfer module and the acdc module. After a general introduction to the user interface, several tutorials. The rf heating tutorial is an example of a twoway coupled problem.
Joule heating in a fuse on a circuit board tutorial, chapter 2. These instructio ns describe the essential components of. Nov 06, 2014 electrical induction heating the induction heating process. A practical guide to geometric regulation for distributed parameter systems. These multiphysics simulation capabilities are useful in the design and study of underground cables, fuses, inductors, and a wide variety of additional applications.
Small heating circuits find use in many applications. Introduction to comsol multiphysics, a book to get you. Joule heating effect multiphysics in integrated circuit. Introduction 5 introduction the acdc module is used by engineers and scientists to understand, predict, and design electric and magnetic fields in statics and lowfrequency applications. How to set up and run a simulation with comsol multiphysics. Using the rf module and coupling it with the bioheat transfer module self. Multiphysics modeling of resistive heating in an aluminum fuse. Thermal actuator parameterized comsol multiphysics.
686 1365 581 1087 1068 1200 1183 1457 68 1118 1365 725 40 912 275 119 1433 1008 1046 1078 1309 552 1014 619 793 811 994 1099 292 498 943 1479