Introduction

• Teaching thermodynamics using simulations:
  • virtual experiments promote understanding
  • many examples in Java or JavaScript
  • programming is hard work
• Using Modelica for standard cyclic processes:
  • physical modeling simplifies task
  • open source simulation program
  • free model library for media
  • but: thermo-fluid modeling is difficult!
• Available libraries:
  • Fluid from Modelica Standard Library (MSL)
    • thermo-fluid flow in pipes, vessels or machines
    • very general approach → much too complicated here
    • initialization difficult  → models recurrently fail to run
  • ThermoSimT from textbook on Modeling & Simulation
    • easily build models of standard processes
    • does not use Media library from MSL
  • DLR ThermoFluidStream Library (ThermoDLR):
    • vessels and machines with support for Modelica media library
    • much easier to handle than MSL-Fluid
    • uses physically motivated scheme for high robustness
    • → models generally run without fine-tuning