Tytuł pozycji:
Computer model of acoustic link in a pipe with a flowing gas medium. Part I: Perturbation of ultrasonic transducer directivity pattern
- Tytuł:
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Computer model of acoustic link in a pipe with a flowing gas medium. Part I: Perturbation of ultrasonic transducer directivity pattern
- Autorzy:
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Gudra, T.
Opieliński, K.
- Data publikacji:
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1997
- Wydawca:
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Polskie Towarzystwo Akustyczne
- Język:
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angielski
- Prawa:
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CC BY-NC-SA: Creative Commons Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 3.0 PL
- Źródło:
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Hydroacoustics; 1997, 1; 299-302
1642-1817
- Dostawca treści:
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Biblioteka Nauki
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The paper presents an aeroacoustic range equation which makes it possible to elaborate a computer model of ultrasonic link in air for static conditions. The model was made in form of a computer program called KML. Extending the static model, a simulation of uItrasonic wave propagation in a pipeline with flowing air for different profiles of laminar and turbulent flow and different link parameters was performed. The simulation made it possible to work out a computer model of an acoustic link in flowing gas. The model as a computer program can be used to calculate disturbance of ultrasonic beam rays shape and directivity pattem perturbation. Directivity pattem of ultrasonic transmitting transducer, deformed by flowing medium, becomes non-axial symmetric. As a result of the flow, ultrasonic beam rays are curvilinear and the source directivity pattern depends on rectilinearly measured distance.