Aeroacoustic whistling mechanisms in perforated pen caps
Abstract
This paper investigates the acoustic behavior of a perforated pen cap, which acts as a compact self-sustained whistling system. Through experimental measurements and numerical simulations, we analyze the aeroacoustic interaction between jet flow dynamics and resonator geometry to identify conditions under which sound generation and amplification occur. The study highlights key aeroacoustic mechanisms and demonstrates pedagogical value, while suggesting practical implications for the design of flow-induced sound devices.
Fields of Study & Subjects
Aerodynamics and Acoustics in Jet Flows
Combustion and flame dynamics
Acoustic Wave Phenomena Research
Publication details
- Journal / source
- Acta Acustica
- Volume
- 10
- Pages
- 4–4
- Publication date
- 1 January 2026
- Language
- EN