The Standard Reference Simulation Website is an ongoing project whose aim is to provide well-documented simulation results for a variety of systems and from various simulation techniques. The results contained here are usually generated in-house at NIST but, when certain criteria are satisfied, may also include results from provided from outside collaborators.
Molecular simulations, in particular Monte Carlo Molecular Simulation and Molecular Dynamics Simulation, are methods for computing the properties of some kind of system, for which the intermolecular interactions are specified, via mathematical relationships derived from statistical mechanics. Since statistical mechanics itself makes no reference to molecular simulation of any kind, the properties that derive from statistical mechanics should not depend on the particular simulation algorithm used to compute properties for a specified model. Consequently, the results obtained from a molecular simulation can be thought of as characteristic of the model system, subject only to statistical uncertainty in those results, if the simulation technique follows necessary rules (e.g., detailed balance or microscopic reversibility, depending on the particular algorithm) and is computationally robust. Our goal in this project is to publish well-documented simulation results for reliable and well-vetted simulation software for a variety of systems, many of which are commonly used in molecular simulations, that can be treated similar to "standard reference data" that is generated in an laboratory setting. The data contained here may be used to validate and test new or existing molecular simulation software, as reference data, or for other appropriate applications. Most of the results contained here are generated in-house at NIST, but we will also include results from collaborators provided certain criteria are satisfied (see "Criteria..." below). In addition, it is our goal to provide data from molecular simulations in a raw or unprocessed format, when possible, so that the data may be reprocessed according to end users' particular needs. To that end, we also provide some software that may be used to reprocess data contained here.
Thermophysical properties of fluids that are entered into this database must conform to the following criteria: