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Nonlinearities on the pressure pulse propagation through a straight elastic tube

Nichtlinearitäten bei der Ausbreitung von Druckschwankungen durch ein gerades, elastisches Rohr

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Summary

The present paper describes a nonlinear mathematical model for the pressure-pulse transmission through an elastic straight tube with circular cross-section. The distortion of a sinusoidal pressure pulse in dimensionless form depends on two parameters, the Strouhal number and the Euler number. The analysis is useful to the correction of the errors which enter in the measurement of the dynamic pressure when long elastic tubes connecting the point of measurement and the pressure transducer are used.

Übersicht

Ausgehend von den Grundgleichungen der instationären Stromfadentheorie wird die Ausbreitung sinusförmiger Druckpulse in einem geraden Rohr mit Kreisquerschnitt und elastischen Wänden berechnet. Die Verzerrung der Druckpulse hängt in dimensionsloser Form von den Parametern Euler- und Strouhal-Zahl ab. Die Resultate der vorliegenden Arbeit dienen der Korrektur des gemessenen instationären Druckes, wenn der Meßort und die Druckmeßdose mit einem elastischen Schlauch verbunden sind.

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Authors and Affiliations

  1. National Technical University of Athens, 28th October str. 42, 10682, Athens, Greece

    S. Tsangaris & L. Kozis

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  1. S. Tsangaris
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  2. L. Kozis
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Tsangaris, S., Kozis, L. Nonlinearities on the pressure pulse propagation through a straight elastic tube. Ing. arch 57, 73–80 (1987). https://doi.org/10.1007/BF00536813

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  • DOI: https://doi.org/10.1007/BF00536813

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