Magazine Article

Computing Flows Using Chimera and Unstructured Grids

TBMG-1899

09/01/2006

Abstract
Content

DRAGONFLOW is a computer program that solves the Navier-Stokes equations of flows in complexly shaped three- dimensional regions discretized by use of a direct replacement of arbitrary grid overlapping by nonstructured (DRAGON) grid. A DRAGON grid (see figure) is a combination of a chimera grid (a composite of structured subgrids) and a collection of unstructured subgrids. DRAGONFLOW incorporates modified versions of two prior Navier-Stokes equation solving programs: OVERFLOW, which is designed to solve on chimera grids; and USM3D, which is used to solve on unstructured grids. A master module controls the invocation of individual modules in the libraries. At each time step of a simulated flow, DRAGONFLOW is invoked on the chimera portion of the DRAGON grid in alternation with USM3D, which is invoked on the unstructured subgrids of the DRAGON grid. The USM3D and OVERFLOW modules then immediately exchange their solutions and other data. As a result, USM3D and OVERFLOW are coupled seamlessly.

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Citation
"Computing Flows Using Chimera and Unstructured Grids," Mobility Engineering, September 1, 2006.
Additional Details
Publisher
Published
Sep 1, 2006
Product Code
TBMG-1899
Content Type
Magazine Article
Language
English