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OMNISIM is software that analyzes photonic devices/grating structures using solvers such as FDTD/FETD/RCWA.
A unique combination of FDTD and FETD simulators OmniSim is the only software package to include both FDTD and FETD engines. This combination allows you to get the best of both worlds: FDTD for quick approximate simulations and FETD for higher accuracy, or even just to check your FDTD calculations with an alternative method.
General-purpose steady-state process simulation and optimization software
ProSim Plus is a product of the French company Fives ProSim and is a general-purpose steady-state process simulator that includes optimization features. In addition to a rigorous thermodynamic model (also sold as a separate product called Simulis Thermodynamics), it is equipped with precise models of chemical engineering unit operations such as heat exchangers, reactors, distillation columns, absorption columns, and extraction columns, allowing for the modeling and simulation of large manufacturing processes, including complex recycling. Designed with the concept of Open Software, it enables users to add custom unit models and modify or extend standard models using Visual Basic. It complies with Cape-Open standards and allows for the integration of models from compatible external software for simulation.
The only process simulator fully specialized in the nitric acid manufacturing process.
ProSim Plus HNO3 is a product of the French company Fives ProSim, designed based on over 30 years of experience in modeling and simulating nitric acid plants and nitrous acid vapor absorption systems (mainly referencing Professor Xavier Joulia's 1981 paper "Contribution au développement d’un programme général de simulation – Application à l’analyse du fonctionnement d’un atelier de production d’acide nitrique"). In addition to the standard features of ProSim Plus as a process simulator, it incorporates rigorous models for chemical reactions and mass transfer rates in gas-liquid phases in absorption towers and condensers, as well as oxidation reactions in the gas phase within heat exchangers and piping. Notably, the oxidation reaction from NO to NO2 in the gas phase applies a rate model rather than an equilibrium model.
