Software Pages for CFRFS

One of our goals is the development of a component-based toolkit for reacting flow computations. As various parts of the Toolkit get completed, we will release them.

Each of the pieces released will have their separate pages, which will also contain their subsequent releases / bug fixes. Those pages will also contain the listing of papers (algorithms and validations) associated with the software. This page will simply serve as a listing of these separate pieces.

HODIF

HODIF (High Order Derivatives, Interpolations and Filters) is a software library of stencils that can be used with block-structured adaptively refined meshes. It will contain  finite-difference stencils in 2D and 3D for evaluating derivatives, as well as for inter-level interpolations (prolongations and restrictions). These are required if one intends to perform high-order (fourth and higher) computations on AMR meshes. Note that the high-order is spatial only. Also, we stipulate that the level-to-level refinement ratio is 2. Filters provided here are sometimes required to remove the high (unresolved) wavenumber content from the solution; the lack of numerical dissipation makes high-order stencils rather susceptible to instability and/or Runge phenomenon.

  Release 0.1  <http://www.caip.rutgers.edu/~jaray/HighOrder/SISC06.html> , April 2006 : This release contains software that is  applicable to vertex-centered meshes (variables are defined at cell  corners). Upwinded derivative stencils are included. The software is  limited to 2D (3D has yet to be tested) and collocated derivatives i.e.  derivative are evaluated at the points where the variables are defined.  Staggered derivatives are being exercised now.

CFRFS Toolkit

A preliminary version of the toolkit is nearing completion. We expect a first release in 2007.