Abstract
A series of acoustic propagation experiments was conducted in the University of Florida Boundary Layer Wind Tunnel (UFBLWT) to investigate tornadic infrasound propagation in the turbulent atmosphere. A synthetic acoustic wave was generated within a boundary layer wind field using a speaker, and distorted by the surrounding turbulent atmosphere as it propagated along the UFBLWT fetch where it was measured by an acoustic microphone 22 m downwind of the speaker. The wind tunnel operating speed and the configuration of the mechanical turbulence generating roughness elements were varied between experiments to alter the turbulence characteristics and thus the distortion of the acoustic wave. The wind field turbulence data were obtained by three Cobra probes mounted on an actuated and automated gantry. The turbulence-induced distortion of the acoustic wave was captured by analyzing the signal at its source and as-measured downwind. Data were characterized, organized, and curated into four stages.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request. Some or all data, models, or code generated or used during the study are available in a repository online in accordance with funder data retention policies. The online data are published on DesignSafe and are accessible via https://doi.org/10.17603/ds2-bpav-8w29.
Acknowledgments
The authors are grateful for continual funding from NOAA. This program is supported by the NOAA Weather and Air Quality Research program Award No. NA18OAR4590306. The authors are grateful for the technicians and staff at the National Science Foundation Boundary Layer Wind Tunnel at the University of Florida.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 5 • May 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 10, 2021
Accepted: Oct 21, 2021
Published online: Feb 17, 2022
Published in print: May 1, 2022
Discussion open until: Jul 17, 2022
ASCE Technical Topics:
- Acoustics
- Boundary layers
- Colleges and universities
- Continuum mechanics
- Detection methods
- Distortion (structural)
- Dynamics (solid mechanics)
- Education
- Engineering fundamentals
- Engineering mechanics
- Fluid mechanics
- Hydrologic engineering
- Methodology (by type)
- Practice and Profession
- Solid mechanics
- Structural behavior
- Structural engineering
- Turbulence
- Water and water resources
- Wave generation
- Wave propagation
- Waves (fluid mechanics)
- Waves (mechanics)
- Wind engineering
- Wind tunnel
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