Development of a Didactic Demonstrator for Aeroacoustic Evaluations of Ducts

Schode S, Boysen J, Mayrhofer D, Kraxberger F, Heidegger P, Wurzinger A, Czwielong F, Maurerlehner P (2024)

Publication Type: Conference contribution

Publication year: 2024

Publisher: American Institute of Aeronautics and Astronautics Inc, AIAA

Conference Proceedings Title: 30th AIAA/CEAS Aeroacoustics Conference, 2024

Event location: Rome IT

ISBN: 9781624107207

DOI: 10.2514/6.2024-3246

Abstract

Higher education by means of aeroacoustic laboratories is crucial for the future development of ever quieter and more efficient transportation technologies. The practical training contributes to improving safety, understanding the physical relationships between aerodynamic performance and aeroacoustic noise emission, and provides interdisciplinary training for the next generation of professionals in the field. Hence, this ongoing project adapts an existing aero- and vibroacoustic test rig for low-Mach-number flows in a pipe. It targets the development of a high-quality demonstrator for teaching flow-induced sound generation in ducts. The initial test rig was designed to study flow-induced sound in pipe structures for automotive applications, where low cabin noise is becoming an increasingly important purchase criterion. The test rig comprises a high-pressure/low-Mach-number centrifugal blower, adaptable pipe sections, acoustic absorbers to decouple the test section from blower noise, and an anechoic termination to mitigate acoustic reflections at the pipe exits. Multiple sensors are inserted to track the system operation, flow conditions, internal sound radiation and transmission, and surface vibrations. The highprecision test rig is being transformed into a more transportable and easily accessible teaching tool with the aim of providing optimal conditions for didactic applications.

Authors with CRIS profile

Felix Czwielong Lehrstuhl für Strömungsmechanik (LSTM)

Involved external institutions

Technische Universität Graz AT Austria (AT) Fachhochschule Kiel DE Germany (DE)

How to cite

APA:

Schode, S., Boysen, J., Mayrhofer, D., Kraxberger, F., Heidegger, P., Wurzinger, A.,... Maurerlehner, P. (2024). Development of a Didactic Demonstrator for Aeroacoustic Evaluations of Ducts. In 30th AIAA/CEAS Aeroacoustics Conference, 2024. Rome, IT: American Institute of Aeronautics and Astronautics Inc, AIAA.

MLA:

Schode, Stefan, et al. "Development of a Didactic Demonstrator for Aeroacoustic Evaluations of Ducts." Proceedings of the 30th AIAA/CEAS Aeroacoustics Conference, 2024, Rome American Institute of Aeronautics and Astronautics Inc, AIAA, 2024.

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