Novel ultrasonic bat deterrents based on aerodynamic whistles
Zhangming Zeng, Anupam Sharma

TL;DR
This study develops and tests ultrasonic bat deterrents using aerodynamic whistles, combining experimental measurements and numerical simulations to optimize their acoustic performance for effective bat deterrence.
Contribution
The paper introduces a novel multi-whistle ultrasonic deterrent design with experimental validation and numerical modeling, enhancing spectral coverage for bat deterrence applications.
Findings
The baseline whistle operates at ~23 kHz with harmonics.
The six-whistle design produces six dominant ultrasound peaks.
Simulations agree well with experimental acoustic measurements.
Abstract
Novel ultrasonic bat deterrents based on aerodynamic whistles are investigated experimentally and numerically. The baseline deterrent, a single-whistle design inspired by Beeken [1], is examined first. It consists of two resonating cavities/chambers. The whistle is ``powered'' by a regulated high-pressure air supply and the performance of the whistle is examined for a range of supply pressures. Farfield acoustic measurements in the Hz - kHz frequency range are made in an anechoic chamber. The noise measurements are supplemented with two- and three-dimensional unsteady Reynolds-averaged Navier-Stokes (uRANS) simulations to investigate the mechanisms of ultrasound generation. The Ffowcs Williams-Hawkings acoustic analogy is used with the 3-D uRANS results to predict the far field radiation. The farfield acoustic predictions are in good agreement with the measurements in the…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAerodynamics and Acoustics in Jet Flows · Bat Biology and Ecology Studies · Icing and De-icing Technologies
