Simulation Software

An innovative underground radar technology developed at Louisiana Tech University is helping the City of Slidell in south Louisiana to identify and document underground infrastructure damage that had gone undetected in the months and years following Hurricane Katrina.

Using an air-fluidized bed trackway filled with poppy seeds or glass spheres, researchers at the Georgia Institute of Technology systematically varied the stiffness of the ground to mimic a variety of surfaces, from hard-packed sand to powdery snow. By studying how running lizards, geckos, crabs, and a robot...

Using advanced computers and a computational technique to simulate physical processes at the atomic level, researchers at Brown University have predicted that a material made from hafnium, nitrogen, and carbon would have the highest known melting point: 4,400 kelvins (7,460 degrees...

Soft nanoparticles from a University of Pennsylvania research team stick to the plane where oil and water meet, but do not stick to one another. The interface presents a potentially useful set of properties. The nanoparticles freely move past one another while being confined to the interface, effectively acting as a 2D...

JavaGenes is a general-purpose software program that implements several different data optimization techniques. The program is intended for problems that have no gradient, comparing genetic algorithms with stochastic hill climbing and simulated annealing to generate optimal design solutions. JavaGenes can create many...

The atmospheric boundary layer is the lowermost layer of the atmosphere and is host to a plethora of physical processes that significantly affect weather, climate, and air quality. In many applications, detailed information about the boundary layer is required at high temporal and...

A high level of autonomy is desired for future unmanned combat systems because lethality and survivability can be improved with much less communication bandwidth than would be necessary for preprogrammed or remotely operated systems. However, there are a number of technical...

The Pegasus software is used as a pre-processor for overset-grid computational fluid dynamic (CFD) simulations. The main features of the software include: automated hole cutting algorithms; a projection scheme for fixing small discretization errors in overset surfaces; efficient...

The NASA Langley Aeronautics Systems Analysis Branch (ASAB) is heavily involved in research studies to evaluate new and emerging concepts targeted at improving the National Airspace System (NAS). The primary tool used by ASAB to perform these studies is the Airspace Concept Evaluation System (ACES), a medium-fidelity, NAS-wide...

In the context of systems health management, simulations serve many uses. For one, the underlying physical models can be used by model-based health management tools to develop diagnostic and prognostic models. These simulations should incorporate both nominal and faulty behavior with the ability to inject various faults into the system....

This software computes a single-phase turbulent flow. The solution is independent of the grid spacing on which it is computed, and on the discretization order used for the differential equations. Grid spacing and discretization-order independence can be achieved by reformulating the large-eddy...

Scientists need to be able to quickly develop and run parallel simulations without writing low-level message passing codes using compiled languages such as C/C++/Fortran. Traditionally, high-level languages that support rapid development, such as MATLAB, IDL, Mathematica, and Python,...

This software computes two-phase turbulent flows with phase change, and the solution is independent of the grid spacing on which it is computed and on the discretization order used for the differential equations. Grid spacing and discretization-order independence can be achieved...