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NeqSim (Non-Equilibrium Simulator) is a Java library for estimation of fluid behavior and process design for oil and gas production. NeqSim development was initiated at the Norwegian University of Science and Technology (NTNU) by Even Solbraa. The fundamental theory including the object oriented structure of NeqSim is described in a PhD thesis from NTNU.
This Wiki describes the steps needed to get familiar working with NeqSim in the Java programming language. Use the right menu to navigate in the documentation. Questions and answers can be asked and searched in the Discussion Forum.
NeqSim toolboxes are avalable via GitHub for alternative programming languages.
NeqSim NeqSim is an abbreviation for Non-equilibrium Simulator. It is a tool for thermodynamic and fluid-mechanic simulations. NeqSim enables simulation of the most common unit operations you find in the petroleum industry. The basis for NeqSim is a library of fundamental mathematical models related to phase behavior and physical properties of oil and gas.
NeqSim is built upon a number of modules. Examples of these modules are:
- Thermodynamic Routines
- Physical Properties Routines
- Fluid Mechanic Routines
- Unit Operations
- Chemical Reactions Routines
- Statistics/parameter fitting routines
- Process simulation routines
Related projects: NeqSim Python/Colab
- Getting started with NeqSim and GitHub
- Getting started as a NeqSim developer
- The NeqSim parameter database
- Example of setting up a fluid and running simple flash calculations
- Select thermodynamic model and mixing rule
- Flash calculations and phase envelope calculations using NeqSim
- Calculation of thermodynamic and physical properties using NeqSim
- Oil Characterization in NeqSim
- Aqueous fluids and NeqSim
- Electrolytes and NeqSim
- Process Calculations in NeqSim