An Automated High Aspect Ratio Mesher for Computational Fluid Dynamics

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CC71C
Agency Tracking Number: 090014
Amount: $749,997.00
Phase: Phase II
Program: STTR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: T8.01
Solicitation Number: N/A
Small Business Information
IL, Oak Brook, IL, 60523-0036
DUNS: 023922709
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Kenji Shimada
 Principal Investigator
 (412) 268-3614
 shimada@cmu.edu
Business Contact
 John Cray
Title: Business Official
Phone: (630) 544-8958
Email: cray@ciespace.com
Research Institution
 Carnegie Mellon University
 Kristen Jackson
 5000 Forbes Avenue
Pittsburgh, PA, 15213-15213
 () -
 Domestic nonprofit research organization
Abstract
The work will focus on the 3D implementation of the Phase 1 CHARM mesher, with solution-adaptive iteration for CFD and non-CFD applications. The proposed 3D method will incorporate and extend a previously developed method of generating field-guided hexahedral elements from a metric tensor field. While the fundamental technical approach?a combination of metric tensor conditioning, metric-tracing mesher, and cell-packing mesher?remains the same, there are many technical challenges specific to the 3D domain, including the following:- Investigation into conditioning of volume metric tensor fields- Investigation into the topology (structure) of volume metric tensor fields- Developing algorithms for the generation, repair, and adjustment of streamsurface arrangements- Developing algorithms to convert streamsurface arrangements to hex-dominant meshes- Developing algorithms to combine streamsurface- and packing-based meshes- Investigation into designing these algorithms for mesh adaptation rather than adaptive remeshing- Investigation of time and storage efficiency of these algorithms in a large-scale parallelism contextIn addition to the above, the goal is to generalize the solution in order to support its packaging and commercialization for a number of problem sets and target applications. This includes generalization of the solver-adaptive framework, creation of APIs to programatically expose core functions, and provide UI access to appropriately control and configure the application.

* Information listed above is at the time of submission. *

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