How to Solve a Magnetic Circuit in COMSOL Multiphysics + Analytical Comparison

Learn how to simulate a magnetic circuit in COMSOL Multiphysics step by step — from geometry creation to nonlinear material modeling and final analytical validation! 💾 Download All COMSOL Project Files: Subscribe + Like this video, then send a screenshot as proof to [email protected]. In this tutorial by High Volt Academy, we build a square-core magnetic circuit with an air gap, define a nonlinear B–H curve, and compare the finite element simulation (FEM) results with the analytical solution based on Ampere’s Law. You’ll learn: • How to create a magnetic core geometry and assign materials in COMSOL • How to import and use a nonlinear B–H characteristic • How to define Ampere’s Law, coils, and air gaps • How to visualize magnetic flux density (B) and magnetic field strength (H) • How to analyze fringing effects in magnetic circuits • How to calculate and compare analytical and FEM results for accuracy By the end of this tutorial, you’ll understand both the analytical and finite element approaches for magnetic circuits — and see how close they can get (less than 4% error!). 🕒 Video Chapters: 00:00 COMSOL Magnetic Field Simulation Tutorial | Introduction, Goals & Learning Outcomes 00:51 Understanding the Magnetic Circuit Problem Setup and Given Parameters 01:31 Creating the Geometry of the Magnetic Core in COMSOL Multiphysics 02:15 Assigning a Nonlinear B–H Curve to Magnetic Material in COMSOL 04:03 Setting Up Magnetic Field Physics for the Nonlinear Saturable Core 06:28 Visualizing the Fringing Effect in the Magnetic Circuit Air Gap 07:11 Plotting Magnetic Flux Density Distribution Across Core and Air Gap 09:15 Using a Polygon Path to Plot the Magnetic Field Along the Core 11:14 Analytical Solution of a Magnetic Circuit | Hand Calculation Explained 14:52 Comparing COMSOL Magnetic Circuit Results with Analytical Solution 16:17 Calculating Averages of Magnetic Parameters in COMSOL Post-Processing 18:00 Outro | What’s Next on High Volt Academy 📚 Next video: Time-dependent simulation of a single-phase transformer! If you enjoy this type of detailed engineering simulation tutorial, don’t forget to like, subscribe, and turn on notifications to stay updated with the latest videos from High Volt Academy. ________________________________________ 🎯 Related Videos and playlists:    • Model Solenoid Coil in COMSOL (Fast & Accu...      • How to Visualize Magnetic Fields in COMSOL...      • Inductance and Transformer Simulations in ...      • COMSOL Tutorial for Beginners   ________________________________________ 🔖 Hashtags: #COMSOL #COMSOLMultiphysics #MagneticCircuit #MagneticSimulation #BHcurve #FiniteElementAnalysis #FEM #Electromagnetics #AmpereLaw #MagneticFlux #MagneticField #NonlinearMaterials #Magnetostatics #EngineeringSimulation #PhysicsTutorial #Magnetism #AirGapFlux #SimulationTutorial #HighWorldAcademy #AnalyticalVsSimulation