DOAJ Open Access 2025

Effects of boundary-layer tripping on the acoustic tones of impinging jets

Bogey Christophe Vincent Hugo

Abstrak

The influence of boundary-layer tripping on the acoustic tones generated by a jet at a Mach number of 0.9 impinging on a flat plate is investigated for two nozzle-to-plate distances. Tripping the jet boundary-layer is found not to appreciably alter the frequencies but to significantly affect the levels of the tones. These effects strongly depend on the tone number and on the nozzle-to plate distance. For a given tone, in particular, the levels can decrease or increase depending on the distance. Therefore, tripping the boundary layers of impinging jets can result to less or more noise, and cannot be considered as a reliable method to reduce noise for these jets.

Topik & Kata Kunci

Acoustics in engineering. Acoustical engineering Acoustics. Sound

Penulis (2)

Bogey Christophe

Vincent Hugo

Format Sitasi

APA MLA BibTeX

Christophe, B., Hugo, V. (2025). Effects of boundary-layer tripping on the acoustic tones of impinging jets. https://doi.org/10.1051/aacus/2025059

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1051/aacus/2025059
Akses: Open Access ✓