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A mathematical model for surface shear viscosity measurements

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Sommario

Recenti risultati sperimentali hanno evidenziato l'influenza degli effetti della viscosità superficiale in correnti di laboratorio e di conseguenza l'importanza di poter controllare tale grandezza tramite un misuratore.

Partendo dalle teorie esistenti si formula un sistema di equazioni differenziali la cui soluzione numerica è confrontata con risultati analitici di altri Autori.

In ultimo si presenta la proposta di un misuratore di viscosità superficiale che richiede solo misure di tipo cinematico.

Summary

As in recent experimental work we have evidenced that the surface shear viscosity seems to be an important physical property in small scale free surface phenomena, we propose an analytical approach for studying a surface viscometer.

Starting from the existing theory on surface layer behaviour, we formulate a set of differential equation whose numerical solution is compared with a recent analytical result.

By means of the so calibrated method we analyze the behaviour of a proposed meter for surface shear viscosity which needs only kinematic measurements.

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Authors and Affiliations

  1. Istituto di Idraulica, Facoltà di Ingegneria, Genova

    Laura Rebaudengo Landò

Authors
  1. Ignazio Becchi
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  2. Laura Rebaudengo Landò
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Becchi, I., Landò, L.R. A mathematical model for surface shear viscosity measurements. Meccanica 10, 49–56 (1975). https://doi.org/10.1007/BF02148285

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  • DOI: https://doi.org/10.1007/BF02148285

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