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Aeroacoustic Optimization of a Ducted Radiator Fan

Lohmann, D. (1993) Aeroacoustic Optimization of a Ducted Radiator Fan. Acoustics Seminar at United Technology Research Center, Hartford, CN, USA, 3.11.1993..

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Abstract

In the past, comprehensive investigations have been made by the automobile industry and government institutions to develop new radiator fans of different geometry which generate lower noise and lower aerodynamic loss. These efforts have been conducted promarily in an empirical manner. More controlled and effective approaches are possible using modern computational methods to be described during this presentation. As a first step in the evolution of such modern analysis, an Aeroacoustic Singularity Method combined with an Optimization Code was developed at the Institute of Design Aerodynamics. This permitted conducting a research study supported by the AEG company, Germany, to improve conventional car radiator fans. In the case of periodic signals, the singularity method employs a lifting surface approach for both aerodynamics and acoustics. In the case of random signals, the method uses a semi-empirical.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1996,
Title:Aeroacoustic Optimization of a Ducted Radiator Fan
Authors:
AuthorsInstitution or Email of Authors
Lohmann, D.UNSPECIFIED
Date:1993
Status:Published
Keywords:Lifting Surface Method, Fan Noise, Optimization of Aeroacoustics
Event Title:Acoustics Seminar at United Technology Research Center, Hartford, CN, USA, 3.11.1993.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:06

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