Ed Duell

• Doctor of Engineering
• Chief Engineer at Amentum

div class="section abstract"> The Honda Automotive Laboratories of Ohio (HALO) includes a new aeroacoustic wind tunnel located near Marysville, Ohio that started operations in 2022. This facility provides world-class aerodynamic flow quality and acoustic testing capabilities for the development of both passenger and motorsports vehicles. This close...

View Video Presentation: https://doi.org/10.2514/6.2021-2970.vid This paper is part of a four paper series on a major acoustic improvement project completed at the 9- by 15- Foot Low Speed Wind Tunnel in NASA Glenn Research Center (GRC) in 2019. The principal objective of the design upgrade was to reduce the background noise levels in the test sect...

Scania AB has opened the new CD7 climatic wind tunnel test facility, located at the Scania Technical Center in Södertälje, Sweden. This facility is designed for product development testing of heavy trucks and buses in a range of controllable environments. Having this unique test environment at the main development center enables Scania to test its...

Unsteady flow over automotive side-view mirrors may cause flow-induced vibrations of the mirror assembly which can result in blurred rear-view images, adversely affecting marketability through customer comfort and quality perception. Prior research has identified two mechanisms by which aerodynamically induced vibrations are introduced in the mirro...

There has been significant progress in developing test facilities for automotive wind noise and automotive components since the early 1990s. The test technology is critical to the development of modern vehicles, and essentially every major automotive manufacturer owns and operates their own aeroacoustic wind tunnel, or has rental access to one and...

Low frequency pressure oscillations in open jet wind tunnels are produced by vortices shed from the nozzle exit coupled with several feedback mechanisms in the circuit. These undesired pressure fluctuations can cause structural vibrations, reduction of flow quality, and delays in delivery of newly-built wind tunnels. One effective method to mitigat...

This paper reports a numerical study of low-frequency acoustics on a modern open-jet wind tunnel design. The study simulates the acoustic response inside the wind tunnel which is subjected to a simulated edge-tone emission without a moving flow. The effects of a Helmholtz resonator installed at different locations along the wind tunnel circuit are...

The new BMW Aerodynamisches Versuchszentrum (AVZ) wind tunnel center includes a full-scale wind tunnel, 'The BMW Windkanal' and an aerodynamic laboratory 'The BMW AEROLAB'. The AVZ facility incorporates numerous new technology features that provide design engineers with new tools for aerodynamic optimization of vehicles. The AVZ features a single-b...

In order to obtain uniform velocity and low levels of turbulence in a wind tunnel, flow conditioning must be incorporated in the stilling chamber upstream of the test section. Stilling chambers can employ a variety of honeycomb and screen combinations to help achieve the flow specifications required in the test section. Stiffeners are often require...

This paper provides an overview of the design and commissioning results for the DaimlerChrysler full-scale vehicle Aeroacoustic Wind Tunnel (AAWT) brought online in 2002. This wind tunnel represents the culmination of the plan for aeroacoustic facilities at the DaimlerChrysler Corporation Technical Center (DCTC) in Auburn Hills, Michigan. The compe...

The effect of a splitter plate on the near wake of a three dimensional bluff body in proximity to a ground plane was studied. Static pressure taps on the base of the body were used to measure both the mean and fluctuating pressures acting on the model base. It was determined that the splitter plate raised the spatially averaged mean pressure on the...