Equation Of State Python Packages

thermo

Thermodynamics and Phase Equilibrium component of Chemical Engineering Design Library (ChEDL)

neqsim

NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation. This project is a Python interface to NeqSim.

feos

FeOs - A Framework for Equations of State and Classical Density Functional Theory

compactobject-tov

A small example package

pythermomodels

PyThermoModels is an open-source Python package designed to facilitate thermodynamic modeling and calculations. This package provides a comprehensive and user-friendly interface to popular thermodynamic models, enabling quick and accurate estimation of key properties.

tovextravaganza

Python toolkit for solving TOV equations, calculating tidal deformability, and exploring neutron star properties for gravitational wave and nuclear astrophysics research

co2-eos

Differentiable CO₂ thermodynamic properties in JAX. Pure-JAX Span-Wagner equation of state — JIT-compiled, vmappable, and fully differentiable via jax.grad. Phase-aware solvers robust through the critical point. Allows GPU speedup over CoolProp for CO₂.

pyforfluids

Fluid's thermodynamic properties

rgfrosh

A frozen shock solver for ideal and real gas equations of state.

despasito

DESPASITO: Determining Equilibrium State and Parametrization Application for SAFT, Intended for Thermodynamic Output