A full-scale wind tunnel has been envisioned within the Chrysler Group for more than 30 years. When planning for a full-scale wind tunnel was resurrected in the late 1990s, during the final phase of the DCTC (DaimlerChrysler Corporation Technical Center) construction, wind tunnel performance characteristics needed to support vehicle development were again re-evaluated. During the interim years, focus on aerodynamic and acoustic needs remained, but requirements for thermal simulation escalated -including, for example, a top temperature of 65 degree Celsius with full (99 %) relative humidity capability and a 300 kW, 4-wheel drive dynamometer. These requirements were considered too costly relative to budget available for the facility and, as a result, it was decided to address the growing requirements for thermal testing at a later date with a dedicated climatic wind tunnel having special performance characteristics. The final design of the AAWT (Aeroacoustic Wind Tunnel) began in late 1997. Sverdrup Technology was contracted to serve as designer and commissioning manager with responsibility for developing the design to meet the aerodynamic and acoustic wind tunnel performance targets. Sverdrup had previously served in a similar role at the DCTC for the design and construction of the wind tunnel, three climatic wind tunnels, more than 100 engine and chassis dynamometer test sites, and numerous ether test cells during the previous decade. Walbridge-Aldinger served as the construction manager and general contractor for the AAWT, as well as most of the DCTC construction. This paper provides an overview of the design and commissioning results for the DaimlerChrysler full-scale vehicle AAWT brought on-line in 2002. This wind tunnel represents the culmination of the plan for aeroacoustic facilities at the DCTC in Auburn Hills, Michigan. The competing requirements of excellent flow quality, low background noise, and constructed cast within budget ware optimised using Computational Fluid Dynamics, extensive acoustic modelling, and a variety of scale-model experimental results, including dedicated experiments carried out in the 3/8-scale pilot wind tunnel located at DCTC. The paper describes the project history, user requirements, and design philosophy employed in realizing the facility. The AAWT meets all of DaimlerChrysler's performance targets, and was delivered on schedule. The commissioning results presented in this paper show its performance to be among the best in the world.


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    Title :

    The DaimlerChrysler full-scale aeroacoustic wind tunnel


    Additional title:

    Der DaimlerChrysler aeroakustische Windkanal für Originalfahrzeuge


    Contributors:
    Walter, J. (author) / Duell, E. (author) / Martindale, B. (author) / Arnette, S. (author) / Geierman, R. (author) / Gleason, M. (author) / Romberg, G. (author)


    Publication date :

    2003


    Size :

    17 Seiten, 22 Bilder, 3 Tabellen, 13 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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