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DIRECT COMPUTATION OF TURBULENCE NOISE
- Small Business Information
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Woman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
- Phase 2
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Fiscal Year: 1989Title: DIRECT COMPUTATION OF TURBULENCE NOISEAgency: NASAContract: N/AAward Amount: $349,697.00
Abstract:
DIRECT COMPUTATION OF TURBULENCE NOISE IS A LOGICAL APPLICATION FOR ADVANCED COMPUTATIONAL FLUID DYNAMICS, CFD, PROGRAMS RUN ON SUPERCOMPUTERS. THIS WOULD ELIMINATE THE HIGHLY EMPIRICAL ASPECTS OF PRESENT NOISE PREDICTION TECHNIQUES AND ENABLE STUDY OF ADVANCED HYPERSONIC PROPULSION SYSTEMS. HOWEVER, MANY OF THE SAME PERSISTENT PROBLEMS OF IMPLEMENTATION THAT EXIST IN AEROACOUSTIC THEORY AND MEASUREMENT WILL ALSO PREVAIL IN A FULLY NUMERICAL APPROACH. A FUNDAMENTAL STUDY OF THE MEANS OF APPLYING CFD TECHNIQUES TO NOISE COMPUTATIONS IS THEREFORE IMPERATIVE. JUST AS THERE ARE MANY CFD TECHNIQUES, THERE ARE ALSO MANY WAYS TO DETERMINE THE ACOUSTIC FIELD GIVEN THEFLOW RESULTS. WE WILL ASSESS THE BEST ACOUSTIC TECHNIQUE FOR EACH OF SEVERAL GENERAL CFD APPROACHES, I.E., THOSE USING FINITE DIFFERENCE, VORTICITY, AND SPECTRAL METHODS. PHASE I WILL FOCUS ON THE CONNECTION BETWEEN CFD AND AEROACOUSTIC THEORY, RECOMMEND MODIFICATIONS AND IMPROVEMENTS IN CFD TECHNIQUES USED FOR NOISE CALCULATIONS, EVALUATE THE COMPUTATIONAL POTENTIAL FOR HYPERSONIC FLOWS, AND RECOMMEND SPECIFIC COMPUTATIONAL TECHNIQUES TO BE STUDIED AND DEVELOPED IN PHASE II.Small Business Information at Submission:Principal Investigator:
Charles H BermanBusiness Contact:
Aero-chem Research Laboratorys
Po Box 12 Princeton, NJ 08542EIN/Tax ID:DUNS: N/ANumber of Employees: N/AWoman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
Award Information
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Agency: National Aeronautics and Space Administration |
Branch: N/A |
Award ID: 6810 |
Program Year/Program: 1989 / SBIR |
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Agency Tracking Number: 6810 |
Solicitation Year: N/A |
Solicitation Topic Code: N/A |
Solicitation Number: N/A |