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RotCFD: A Viscous Design Tool for Advanced Configurations

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Sukra Helitek Inc.
IA Ames, IA 50014-4504
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: RotCFD: A Viscous Design Tool for Advanced Configurations
Agency: NASA
Contract: NNX11CD08P
Award Amount: $99,781.00


The incorporation of viscous analysis in design is vital for a completeunderstanding of aerodynamic problems.This proposal offers to develop and integrate with RotCFD a method for semi-automatically generating grids suitable for viscous analysis on complex configurations as well as parallelize the solver in RotCFD to take advantage of today's multi-core machines. The principle idea behind the semi-automation of the grid generation is to divide the geometry surface into patches and generate body-conforming grids from these patches. This partitioning allows for automatic generation of grids with aspect ratios suitable for viscous flows. Convection dominates the outer region, so unstructured Cartesian meshes can be generated quickly and easily here. The outer grid will be conformed to the inner grid so the entire grid can be treated as one unstructured grid with an unstructured solver, or as a hybrid grid with multiple zones and solvers. In the hybrid approach, viscous solvers can be used for the inner zone while the faster inviscid solvers can be used in the far-field. In Phase I a proof-of-concept grid generator, and a conceptual methodology for solver parallelization will be developed and demonstrated to work with RotCFD the rotor aerodynamic design tool. In Phase II, the features of the grid generator and solver will be fully developed and expanded.

Principal Investigator:

Andrew M. Hollingsworth
Principal Investigator

Business Contact:

Ramanujam S Nappinnai
Business Official
Small Business Information at Submission:

Sukra Helitek, Inc.
IA Ames, IA 50014-4504

EIN/Tax ID: 421371077
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No