N.N.Kizilova Wave propagation and reflection in systems of compliant tubes |
Acoustic bulletin, Vol. 6 ¹ 2, (2003) |
| Axisymmetric wave motion of a viscous incompressible liquid in the system consisting of a long thin elastic tube and a terminal element with a complex conductivity is investigated. The expression for the input conductivity of the system taking into account wave reflection at the end of the tube is obtained. The dependence of conductivity on the geometrical and mechanical parameters of the system is investigated. The equation for calculation of the harmonics for which the conductivity reaches the extreme is obtained. These harmonics are shown to be the resonant ones, i.\,e., any changes in the terminal conductivity cause significant changes of their amplitudes. The influence of variations of the model's parameters on the amplitude and the phase of the input conductivity is investigated. Possible application of the proposed model for interpretation of data of the pulse diagnosis is discussed. |
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KEY WORDS: axisymmetric wave motion, elastic tube, complex conductivity, resonant harmonics, pulse diagnostics |
| TEXT LANGUAGE: Russian |