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Numerical Simulation of Dynamic Stall

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
32771
Program Year/Program:
1996 / SBIR
Agency Tracking Number:
32771
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Ecodynamics Research Associate
P.O. Box 9229 Albuquerque, NM 87119
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1996
Title: Numerical Simulation of Dynamic Stall
Agency / Branch: DOD / ARMY
Contract: N/A
Award Amount: $70,000.00
 

Abstract:

The objective of the proposed program is to develop, demonstrate and validate a three-dimensional, time-dependent, compressible Navier-Stokes program for predicting dynamic stall. The foundation of the program is an existing 3-D program that has been developed under prior SBIR funding for retreating-blade dynamic stall on modern high-performance helicopter rotors. The program will be improved in four significant ways. First, capability for dynamic adaptive grid generation will be incorporated in the program. Second, an optimum second-order closure model will be selected for inclusion in the program. Third, a rational method will be devised to predict the onset of transition to turbulence, including initial conditions for a turbulence-model computation through transition and into the turbulent regime. The revised code will bed exercised (using its currently implemented two-equation turbulence model) for a two-dimensional geometry for both deep- and light-stall conditions. Fourth, advances in the solution algorithm will be incorporated, including nonlinear multigrid, TVD, higher-order advective differencing, and true periodicity across the c-c grid. The Phase II code will include the new transition/turbulence models and will be exercised for three-dimensional problems.

Principal Investigator:

Dr. Kambiz Salari
5058437445

Business Contact:

Small Business Information at Submission:

Ecodynamics Research Associate
P.O. Box 9229 Albuquerque, NM 87119

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No