Features of Frequency Characteristics of Normal Waves in Hydroacoustic Waveguide

Authors O.R. Lastovenko, V.A. Lisyutin, A.A. Yaroshenko
Affiliations Sevastopol National Technical University, 33, Universitetskaya Str., 99053, Sevastopol', Ukraine
Е-mail yaroshenko@optima.com.ua
Issue Volume 1, Year 2009, Number 1
Dates Recevied 14.02.2009, in final form – 24.07.2009
Citation O.R. Lastovenko, V.A. Lisyutin, A.A. Yaroshenko, J. Nano- Electron. Phys. 1 No1, 52 (2009)
PACS Number(s) 43.20.Mv; 43.30. – k; 43.30. + m
Keywords Normal waves, Hydroacoustic waveguide, Dissipative mode, Trapped mode, Reflection coefficient (3) , Input impedance, Critical frequency, Absorption index.

We consider the isovelocity hydroacoustic waveguide with a bottom composed of a liquid intermediate layer and a half-space. Damping in a layer and a half-space is taken into account. Critical modes frequencies subject to the layer depth are determined. Frequency characteristics of the wave numbers, the modulus and the phase of reflection coefficient, the bottom input impedance, the modal absorption coefficients, the phase and the group velocities of normal waves are calculated as well.

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