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Samenvatting
In this paper, an acoustic pressure gradient formula capable of accounting for constant uniform flow effects is suggested. Acoustic pressure gradient calculation is key for acoustic scattering problems, because it may be used to evaluate the hardwall boundary condition. Realistic cases of rotating
machines may be evaluated in a moving frame of reference and as such, an acoustic pressure gradient formula capable of accounting for constant uniform flow effects finds significant application. A frequency domain formulation was thus derived for periodic noise source motion located in a moving medium. The suggested formula is mathematically compact and easy to implement. It may offer us significant advantages when tonal noise emissions are dominant, thus finding application potential in acoustic scattering problems in rotating machines in a constant uniform flow. Moreover, the formula contains no Doppler factor, thus facilitating noise prediction for sources in supersonic motion.
machines may be evaluated in a moving frame of reference and as such, an acoustic pressure gradient formula capable of accounting for constant uniform flow effects finds significant application. A frequency domain formulation was thus derived for periodic noise source motion located in a moving medium. The suggested formula is mathematically compact and easy to implement. It may offer us significant advantages when tonal noise emissions are dominant, thus finding application potential in acoustic scattering problems in rotating machines in a constant uniform flow. Moreover, the formula contains no Doppler factor, thus facilitating noise prediction for sources in supersonic motion.
Originele taal-2 | English |
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Aantal pagina's | 14 |
Tijdschrift | Proceedings of the Royal Society A |
Volume | 471 |
Nummer van het tijdschrift | 2184 |
DOI's | |
Status | Published - 10 dec 2015 |
Vingerafdruk
Duik in de onderzoeksthema's van 'Analytical acoustic pressure gradient prediction for moving medium problems'. Samen vormen ze een unieke vingerafdruk.Projecten
- 1 Afgelopen
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IWT664: Voorspelling van direct en verspreid geluidsveld van roterende machines
De Troyer, T., Ghorbaniasl, G., Lacor, C. & Siozos-Rousoulis, L.
1/01/14 → 31/12/17
Project: Fundamenteel