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Steam tables for industrial use according to the international standard for the properties of water and steam, the IAPWS-IF97 formulation and the international standards for transport and other properties.
Hummeling Engineering BV develops engineering software in the fields of thermodynamics, mechanics, hydrodynamics, and digital signal processing.
Multithreaded N-Point Gravity Simulation for PC and Android
Create a sun, spin some asteroids around it, and watch them collide and form planets.
An N-Point Gravity Simulator is a realistic simulation in which all points attract each other: even the smallest asteroid has its own gravitational field that can affect even a large sun far away from it.
Can be reused as a library for making games.
If used as library, license is GNU LGPLv3, otherwise it's GNU GPLv3.