Getting Started with Modelica

Modelica is the language engineers reach for when a system crosses domain boundaries - when the same model must capture electrical, thermal, mechanical, and fluid behavior at once. This book builds the language from scratch, the way a tutor would.

Getting Started with Modelica is structured as a guided progression. Each chapter adds one idea. Every concept is grounded in code you write yourself. Nothing is assumed from the previous page that wasn't taught on it. By the end, you can read existing models, write new ones, diagnose problems, and know where to look when something does not behave as expected.

No prior Modelica experience required. Basic familiarity with differential equations and engineering systems is assumed.

What you will learn:

• Why acausal, equation-based modeling changes what engineers can express
• How to build and simulate models using the Modelica Standard Library
• How to write textual models from scratch
• Arrays, for loops, events, and hybrid models
• Inheritance, records, and replaceable components
• Functions, enumerations, inner/outer, and assert
• How to feed data in and get results out
• What the compiler actually does - and how to read the equation browser when a simulation fails
• Solvers, stiffness, and FMI

Chapter 15 makes a concrete argument: Modelica is the language best suited for LLM-assisted engineering. The compiler checks structural correctness, conservation laws are automatic, and the open standard means any engineer can validate the output.

Each chapter ends with a summary and a hands-on exercise. 276 pages.

A note on tools: All workflows and examples use Wolfram System Modeler. The language concepts apply to any compliant tool, but this book does not cover other Modelica environments. A 30-day free trial is available from Wolfram Research.