Attila® Solutions

Attila^® – Accurate Solutions, Fast

State of the art solver
The Attila solver incorporates leading edge solution methods to provide an unrivaled combination of accuracy, speed, and robustness. Through the combined use of third-order accurate spatial differencing, support of unstructured tetrahedral meshes, and efficient memory reduction and acceleration methods, Attila provides the capabilities necessary to solve complex 3-D problems that are often intractable with other methods. Attila features include:
	Neutral, charged, and coupled particle support
	Fixed source and k-eigenvalue calculations
	Forward and adjoint modes
	Broad support of multi-group cross section formats
	Cross section libraries from ENDF-VI

The Advanced Test Reactor at INL. Images provided by the ATR Physics Group at INL.

High fidelity modeling of complex geometry

Through solving the transport equations on unstructured tetrahedral elements, Attila can accurately solve problems orders of magnitude faster than traditional transport solvers. Smaller elements can be used where a higher resolution is required, and larger elsewhere. The result is an accurate solution in a minimal amount of time.