A new subdivision of the slug flow region, determined on the basis of different how features, is presented. The characteristic features of each subregime have been shown by diffusional analysis of experimental time series relative to intermittent flow. It is found that, at low values of the mixture velocity, V-m = j(L) + j(G), a subregime (elongated bubble with dispersed bubble, EDB) with structural characteristics different from those usually attributed to slug flow (slug, SL) exists. It is demonstrated that the application of slug flow models to the whole slug flow region may lead to errors in the estimation of flow parameters, especially in large-diameter pipes (industrial application). A modification of the existing models for the flow variables (slug translational velocity, slug length and slug void fraction) is proposed in the light of the results obtained and confirmed against present and existing data.

Characterization of subregimes in two-phase slug flow

SOLDATI, Alfredo
1996-01-01

Abstract

A new subdivision of the slug flow region, determined on the basis of different how features, is presented. The characteristic features of each subregime have been shown by diffusional analysis of experimental time series relative to intermittent flow. It is found that, at low values of the mixture velocity, V-m = j(L) + j(G), a subregime (elongated bubble with dispersed bubble, EDB) with structural characteristics different from those usually attributed to slug flow (slug, SL) exists. It is demonstrated that the application of slug flow models to the whole slug flow region may lead to errors in the estimation of flow parameters, especially in large-diameter pipes (industrial application). A modification of the existing models for the flow variables (slug translational velocity, slug length and slug void fraction) is proposed in the light of the results obtained and confirmed against present and existing data.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/11390/668893
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 18
social impact