The newly refurbished vertical tunnel (V-tunnel) at Delft University of Technology has been redesigned as a state-of-the-art facility for research in aeroacoustics (A-tunnel), as well as fundamental studies in laminar-turbulent transition and flow control. This manuscript focuses on the design and refurbishment aspects of the facility, including a description of the main modifications in the supporting structures and the drive system of the fan, with details of the flow conditioning and anechoic performance. A rigorous aeroacoustic and aerodynamic characterization of the facility is also presented, benchmarking the flow quality and acoustic performance of the new wind tunnel with respect to other aeroacoustic facilities across the world.

中文翻译：

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代尔夫特理工大学 3D 打印、开放式喷射、消声风洞的气动声学设计和表征

代尔夫特理工大学新翻新的垂直隧道（V 形隧道）已重新设计为最先进的气动声学研究（A 形隧道）设施，以及层流-湍流转变和流动的基础研究控制。这份手稿侧重于设施的设计和翻新方面，包括对支撑结构和风扇驱动系统的主要修改的描述，以及流量调节和消声性能的详细信息。还介绍了该设施的严格气动声学和空气动力学特性，将新风洞的流动质量和声学性能与世界各地的其他气动声学设施进行了对比。