*NWGrid*

*N*orth*W*est *Grid* Generation Code

**Command Index**

#### (The following are pdf files)

**Users Manual**
**Command Reference**

**Tutorial**
**Examples**

**Data Structures Reference**
**Programmers Reference**

Grid generation is a fundamental part of any mesh-based computational
physics problem. *NWGrid/NWPhys* integrates automated grid generation,
time-dependent adaptivity, applied mathematics, and numerical analysis for
hybrid grids on distributed parallel computing systems. This system
transforms complex geometries into computable hybrid grids upon which
computational physics problems can then be solved. *NWGrid* is used as the
preprocessing grid generator for *NWPhys*, setting up the grid, applying
boundary and initial conditions, and defining the run-time parameters for
the *NWPhys* calculations. *NWGrid* provides the grid partitioning functions
and the time-dependent grid generation functions for adaptive mesh
refinement (AMR), reconnection, smoothing, and remapping. *NWPhys*
moves the grid according to forcing functions in non-linear physics drivers
and *NWGrid* fixes it up based on grid topology and grid quality measures.
Extensions of *NWPhys* include incorporating new packages for fluid-solid
interactions, computational electro-magnetics, particle transport, chemistry,
and aerosol transport.

Computational Sciences and Mathematics Division

Pacific Northwest National Laboratory

*Operated by Battelle for the US Department of Energy*

*Feedback:* Lynn Trease

Security & Privacy

*Reviewed:* 12/19/05

*Revised:* 12/19/05