Unstructured Mesh Movement and Viscous Mesh Generation for CFD-Based Design Optimization

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$600,000.00
Award Year:
2006
Program:
SBIR
Phase:
Phase II
Contract:
NND06AA04C
Agency Tracking Number:
040248
Solicitation Year:
2004
Solicitation Topic Code:
A2.08
Solicitation Number:
n/a
Small Business Information
Research South, Inc.
555 Sparkman Dr, Suite 1612, Huntsville, AL, 35816-0000
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
Y
Duns:
928516442
Principal Investigator:
Lawrence Spradley
Principal Investigator
(256) 721-1769
lws@hiwaay.net
Business Contact:
Lawrence Spradley
Business Official
(256) 721-1769
lws@hiwaay.net
Research Institution:
n/a
Abstract
The innovations proposed are twofold: 1) a robust unstructured mesh movement method able to handle isotropic (Euler), anisotropic (viscous), mixed element (hybrid) and generalized polyhedral unstructured grids for CFD applications, particularly, CFD-based design optimization, and 2) a robust method to automatically insert high quality anisotropic prismatic (viscous boundary layer) cells into any existing CFD mesh. All objectives in Phase I were met and all tasks were completed as proposed. The methods worked very well for both 2D and 3D geometries, for tetrahedral, hexahedral, and general polyhedral element types, and for the simple viscous meshes. In Phase II, we will extend the software into a general purpose package for use by NASA, other Government agencies, and commercial customers. We will implement our 3D viscous mesh generation method including a general solution-adaptive meshing capability. We will develop the software necessary to compute sensitivity derivatives of the mesh operations. Two important software design goals for our final Phase II software are ease-of-use and convenient access to its functionality. We will develop two types of user interfaces: graphical access (for the end-user) and programming access (for integration with flow solvers). We will assemble all of the methods developed in Phase II into a single, coherent, design-oriented, product-version code with extensive focus on incorporating a parallel processing capability into the software. The verification & validation plan will follow the industry-standard approach now used by commercial software houses and will include an extensive set of NASA-relevant test cases. The software will be documented and delivered to NASA. The Phase II software has significant potential for commercialization and sales in the non-Government sector.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government