Overture: An advanced object-oriented software system for moving overlapping grid computations

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Description

While the development of high-level, easy-to-use, software libraries for numerical computations has been successful in some areas (e.g. linear system solvers, ODE solvers, grid generation), this has been an elusive goal for developers of partial differential equation (PDE) solvers. The advent of new high level languages such as C++ has begun to make this an achievable goal. This report discusses an object- oriented environment that we are developing for solving problems on overlapping (Chimera) grids. The goal of this effort is to support flexible PDE solvers on adaptive, moving, overlapping grids that cover a domain and overlap where they meet. ... continued below

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7 p.

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Brown, D.L. & Henshaw, W.D. September 1, 1996.

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Description

While the development of high-level, easy-to-use, software libraries for numerical computations has been successful in some areas (e.g. linear system solvers, ODE solvers, grid generation), this has been an elusive goal for developers of partial differential equation (PDE) solvers. The advent of new high level languages such as C++ has begun to make this an achievable goal. This report discusses an object- oriented environment that we are developing for solving problems on overlapping (Chimera) grids. The goal of this effort is to support flexible PDE solvers on adaptive, moving, overlapping grids that cover a domain and overlap where they meet. Solutions values at the overlap are determined by interpolation. The overlapping grid approach is particularly efficient for rapidly generating high- quality grids for moving geometries since as the component grids move, only the list of interpolation points changes, and the component grids do not have to be regenerated. We use structured component grids so that efficient, fast finite-difference algorithms can be used. Oliger-Berger-Corella type mesh refinement is used to efficiently resolve fine features of the flow.

Physical Description

7 p.

Notes

OSTI as TI96014816

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  • Computational aerosciences wrokshop, Ames, IA (United States), 13-15 Aug 1996

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  • Other: TI96014816
  • Report No.: LA-UR--96-2931
  • Report No.: CONF-9608134--1
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/399944 | External Link
  • Office of Scientific & Technical Information Report Number: 399944
  • Archival Resource Key: ark:/67531/metadc683908

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  • September 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Aug. 8, 2016, 8:39 p.m.

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Brown, D.L. & Henshaw, W.D. Overture: An advanced object-oriented software system for moving overlapping grid computations, report, September 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc683908/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.