Aspekt energetyczny promieniowania dźwięku przez drgające źródła powierzchniowe

• Autorzy: Rdzanek W.

Warianty tytułu

EN

The energetic aspect of sound radiation by some vibrating surface sources

• Konferencja: XLVIII Otwarte Seminarium z Akustyki, Wrocław-Polanica Zdrój, 11-14 września 2001 r.
• Języki publikacji: PL

Abstrakty

EN

This study focuses on the energetic aspect of sound radiation by some surface sources. The solution of the sound radiation problem is expressed by the mutual sound radiation power of a pair of two different annuli placed on the same perfectly rigid circular cylinder. It is assumed that the annuli vibrate with different velocities and with different initial phases. Some linear time-harmonic processes are considered. Three different representations of the Green function are given. One of them is used to derive an expression representing the acoustic sound pressure distribution. This makes possible to obtain a formulation for the mutual radiation power in the form of a path integral in a plane of complex variable. The formulation is transformed to its elementary form in the case when the wavelength of the radiated sound pressure is much higher than the cylinder's radius. The mutual reactive sound power is obtained by means of the Hilbert transformation. The computation basis is the known active sound power. The elementary forms of the formulations for the active and reactive sound power can be useful to discuss some acoustic interactions in an energetic aspect of acoustic radiation of some vibrating cylindrical sound sources.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje
• Rocznik: 2001
• Tom: Vol. 83, nr 27
• Strony: 15--24
• Opis fizyczny: bibliogr.24 poz.

Twórcy

autor

Rdzanek W.

• Zakład Akustyki Instytutu Fizyki, Wyższej Szkoły Pedagogicznej, ul.Rejtana 16a, 35-310 Rzeszów,,