Thermodynamics I Interactive Simulations
Simulations whose names are in blue will play in most browsers, but most were programmed in Mathematica, and the CDF versions, which can be downloaded, are significantly faster and can be used offline with the Wolfram CDF plug-inThe QUIZ simulations follow a step-by-step procedure that requires user input.  Most simulations are also available at Wolfram Demonstration Project. Contact us at with questions or suggestions.

Energy Balances and Entropy

Throttling High-Pressure Water

Energy Balance on Pressurizing a Tank

Evaporative Cooling of Water

Reversible and Irreversible Expansion or Compression Work

Temperature Changes in
an Ideal Gas

Entropy Changes in Mixing Ideal Gases

Compressed-Gas Spray

Compare Compressors or Turbines with Different Efficiencies

Compressible Flow through a Nozzle/Diffuser

Adiabatic Compression of Pure Gases

Prepared by H. Binous, N. A. Al-Baghli,
and B. G. Higgins

Joule-Thomson Expansion

Material and Energy Balances in a Reactor with Heat Exchange

Arranging Balls into Boxes

Prepared by M. Brodie

Adiabatic Evaporation of Water into Vacuum

Adiabatic Gas Expansion between Two Tanks

Ranque-Hilsch Vortex Tube

PhET Simulation: Gas Properties
PhET Interactive Simulations
University of Colorado Boulder

Irreversible and Reversible Temperature Equilibrium
Prepared by T. Hogg

Identify Reversible and Irreversible Expansion and Compression Processes


Rankine Cycle

Ordinary Vapor Compression (OVC) Cycle for Refrigerant R-134a

Carnot Cycles with Irreversible Heat Transfer

Refrigeration Cycle Coefficient of Performance

Prepared by M. D. Normand and M. Peleg

Otto Cycle

Prepared by H. Binous, B.G. Higgins, N. Faqir, and A. Bellagi

Phase Equilibrium in a Pure Fluid/Phase Diagrams

Phase Behavior on a Pressure-Volume Diagram

Single-Component P-V and T-V Diagrams

Circumnavigating the Critical Point

Injecting a Liquid into an Evacuated Tank

Reading a Psychrometric Chart

Pressure-Enthalpy Diagram for Water

Temperature-Entropy Diagram for Water

Adiabatic Compression of Water in VLE

Compressibility Factor Charts

Enthalpy-Entropy Diagram for Water

P-V Diagram for Heating a Vapor-Liquid Mixture at Constant Volume

Pressure-Temperature Phase Diagram for Water

Compare Clausius-Clapeyron and Antoine Equations

Heating Water in a Closed Vessel

Prepared by H. Binous, I. Boukholda, and A. Bellagi

Fluids in the Critical Region

Prepared by S.M. Blinder

Fugacity and Departure Functions

Fugacity from Equation of State for Water

Enthalpy and Entropy Departure Functions for Gases

Chemical Potential Dependence
on Temperature & Pressure


Simulation of a Simple Gas Pressure Model

Prepared by J. McLoone

PhET Simulation: Atomic Interactions
PhET Interactive Simulations
University of Colorado Boulder

PhET Simulation: States of Matter
PhET Interactive Simulations
University of Colorado Boulder

Maxwell Relations