You are here

Identification of Turbomachinery Noise Sources Using Acoustical Holography

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC04CA38C
Agency Tracking Number: 035242
Amount: $69,752.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: A2.01
Solicitation Number: N/A
Solicitation Year: 2003
Award Year: 2004
Award Start Date (Proposal Award Date): 2004-01-16
Award End Date (Contract End Date): 2004-07-19
Small Business Information
1796 Stonebridge Drive North
Ann Arbor, MI 48108-8593
United States
DUNS: 136770703
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Satha Raveendra
 Principal Investigator
 (734) 998-0126
Business Contact
 Satha Raveendra
Title: Business Official
Phone: (734) 998-0126
Research Institution

Evaluation and enhancement of the acoustical performance of turbomachinery requires knowledge of the acoustic sources. However, the noise generation mechanisms associated with turbomachinery are complex and as result it is not easy to identify these noise sources. The development of an integrated experimental/numerical technique that is based on holography and is applicable for the identification and ranking of complex noise sources is proposed. A new technique based on potential integral equations will be developed to rapidly evaluate the noise sources of complex structures. Generalized acoustical holography that is applicable for arbitrary geometry is extended by incorporating aeroacoustic noise sources in the presence of mean flow.

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

US Flag An Official Website of the United States Government