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Open AccessArticle

Investigation of Additively Manufactured Wind Tunnel Models with Integrated Pressure Taps for Vortex Flow Analysis

1
Chair of Aerodynamics and Fluid Mechanics, Department of Mechanical Engineering, Technical University of Munich, 85748 Garching bei München, Germany
2
Division of Aerodynamics, Methods and Tools, Airbus Defence and Space, 85077 Manching, Germany
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Aerospace 2019, 6(10), 113; https://doi.org/10.3390/aerospace6100113
Received: 7 August 2019 / Revised: 27 September 2019 / Accepted: 2 October 2019 / Published: 8 October 2019
(This article belongs to the Special Issue Design and Analysis of Wind-Tunnel Models and Fluidic Measurements)
Wind tunnel models are traditionally machined from high-quality metal material; this condition reduces the possibility to test different geometric variations or models as it corresponds to incremental cost. In the last decade, the quality of additive manufacturing techniques has been progressively increasing, while the cost has been decreasing. The utilization of 3D-printing techniques suggests the possibility to improve the cost, time, and flexibility of a wind tunnel model production. Possible disadvantages in terms of quality of the model finishing, stiffness, and geometric accuracy are investigated, to understand if the production technique is capable of providing a suitable test device. Additionally, pressure taps for steady surface pressure measurements are integrated during the printing procedure and the production of complex three-dimensional highly swept wings have been selected as targets. Computational fluid dynamics tools are exploited to confirm the experimental results in accordance with the best practice approaches characterizing flow patterns dominated by leading-edge vortices. The fidelity level of the experimental data for scientific research of the described flow fields is investigated. An insight of the most important guidelines and the possible improvements is provided as well as the main features of the approach. View Full-Text
Keywords: wind tunnel model; additive manufacturing; delta wing; steady pressure measurement wind tunnel model; additive manufacturing; delta wing; steady pressure measurement
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MDPI and ACS Style

Moioli, M.; Reinbold, C.; Sørensen, K.; Breitsamter, C. Investigation of Additively Manufactured Wind Tunnel Models with Integrated Pressure Taps for Vortex Flow Analysis. Aerospace 2019, 6, 113.

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