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Numerical study of a viscous flow through a pipe orifice

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Sommario

Si studia uno schema numerico per la soluzione delle equazioni di Navier-Stokes in un campo a simmetria assiale. I risultati del modello matematico di un processo di moto attraverso un diaframma inserito in una condotta rettilinea, vengono messi a confronto con quelli ottenuti mediante una installazione sperimentale; si constata una buona corrispondenza fra le diverse grandezze esaminate, tra le quali rivestono notevole importanza l'andamento della piezometrica lungo il condotto e l'entità delle perdite di carico localizzate.

Summary

A numerical solution for a fluid motion in a circular pipe orifice is compared with experimental results. Knowledge of the velocity field allows us to find the pressure field. There is good agreement between the piezometric heads and head losses computed and those obtained in experiments.

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Authors and Affiliations

  1. Istituto di Idraulica, Politecnico di Milano, Italy

    Domenico Zampaglione

  2. Laboratorio di Analisi numerica del C.N.R., Università di Pavia, Italy

    Mauro Greppi

Authors
  1. Domenico Zampaglione
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  2. Mauro Greppi
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Zampaglione, D., Greppi, M. Numerical study of a viscous flow through a pipe orifice. Meccanica 7, 151–164 (1972). https://doi.org/10.1007/BF02128761

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  • DOI: https://doi.org/10.1007/BF02128761

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