In free-surface turbulent flows, large amount of air may be entrapped and advected in the water current. The resulting air-water flows are frequently observed in natural water systems, where they are also relevant to water quality, ecological sustainability and integrated assessment within such systems. Herein, a review of physical and numerical modelling of air-water flows is developed, providing some fundamentals towards a consistent modelling of such flows to graduate and Ph.D. level students as well as young researchers in environmental sciences and engineering, with pre-requisite knowledge in basic fluid mechanics. After some theoretical and metrology considerations, the main criteria for the design of physical models and the current literature on the numerical studies are discussed. Two case-studies, the hydraulic jump and the dropshaft, are used to show the application of such criteria and methods. Overall, the paper presents current knowledges/challenges on physical and numerical modelling of self-aerated free-surface flows.

Physical and numerical modelling of air-water flows: An Introductory Overview / Gualtieri, C.; Chanson, H.. - In: ENVIRONMENTAL MODELLING & SOFTWARE. - ISSN 1364-8152. - 143:(2021), p. 105109. [10.1016/j.envsoft.2021.105109]

Physical and numerical modelling of air-water flows: An Introductory Overview

Gualtieri C.;
2021

Abstract

In free-surface turbulent flows, large amount of air may be entrapped and advected in the water current. The resulting air-water flows are frequently observed in natural water systems, where they are also relevant to water quality, ecological sustainability and integrated assessment within such systems. Herein, a review of physical and numerical modelling of air-water flows is developed, providing some fundamentals towards a consistent modelling of such flows to graduate and Ph.D. level students as well as young researchers in environmental sciences and engineering, with pre-requisite knowledge in basic fluid mechanics. After some theoretical and metrology considerations, the main criteria for the design of physical models and the current literature on the numerical studies are discussed. Two case-studies, the hydraulic jump and the dropshaft, are used to show the application of such criteria and methods. Overall, the paper presents current knowledges/challenges on physical and numerical modelling of self-aerated free-surface flows.
2021
Physical and numerical modelling of air-water flows: An Introductory Overview / Gualtieri, C.; Chanson, H.. - In: ENVIRONMENTAL MODELLING & SOFTWARE. - ISSN 1364-8152. - 143:(2021), p. 105109. [10.1016/j.envsoft.2021.105109]
File in questo prodotto:
File Dimensione Formato  
Gualtieri and Chanson 2021.pdf

solo utenti autorizzati

Tipologia: Documento in Post-print
Licenza: Accesso privato/ristretto
Dimensione 11.15 MB
Formato Adobe PDF
11.15 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/878966
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 17
social impact