[article]
| Titre : |
Influence of gas-liquid two-phase intermittent flow on hydraulic sand dune migration in horizontal pipelines |
| Type de document : |
texte imprimé |
| Auteurs : |
Afshin Goharzadeh, Auteur ; Peter Rodgers, Auteur ; Chokri Touati, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
07 p. |
| Note générale : |
fluids engineering |
| Langues : |
Anglais (eng) |
| Mots-clés : |
flow (dynamics) sands particulate matter pipelines pipes mixtures slug water |
| Résumé : |
This paper presents an experimental study of three-phase flows (air-water-sand) inside a horizontal pipe. The results obtained aim to enhance the fundamental understanding of sand transportation due to saltation in the presence of a gas-liquid two-phase intermittent flow. Sand dune pitch, length, height, and front velocity were measured using high-speed video photography. Four flow compositions with differing gas ratios, including hydraulic conveying, were assessed for sand transportation, having the same mixture velocity. For the test conditions under analysis, it was found that the gas ratio did not affect the average dune front velocity. However, for intermittent flows, the sand bed was transported further downstream relative to hydraulic conveying. It was also observed that the slug body significantly influences sand particle mobility. The physical mechanism of sand transportation was found to be discontinuous with intermittent flows. The sand dune local velocity (within the slug body) was measured to be three times higher than the averaged dune velocities, due to turbulent enhancement within the slug body. |
| DEWEY : |
620.1 |
| ISSN : |
0098-2202 |
| En ligne : |
http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27423 [...] |
in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 7 (Juillet 2010) . - 07 p.
[article] Influence of gas-liquid two-phase intermittent flow on hydraulic sand dune migration in horizontal pipelines [texte imprimé] / Afshin Goharzadeh, Auteur ; Peter Rodgers, Auteur ; Chokri Touati, Auteur . - 2010 . - 07 p. fluids engineering Langues : Anglais ( eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 132 N° 7 (Juillet 2010) . - 07 p.
| Mots-clés : |
flow (dynamics) sands particulate matter pipelines pipes mixtures slug water |
| Résumé : |
This paper presents an experimental study of three-phase flows (air-water-sand) inside a horizontal pipe. The results obtained aim to enhance the fundamental understanding of sand transportation due to saltation in the presence of a gas-liquid two-phase intermittent flow. Sand dune pitch, length, height, and front velocity were measured using high-speed video photography. Four flow compositions with differing gas ratios, including hydraulic conveying, were assessed for sand transportation, having the same mixture velocity. For the test conditions under analysis, it was found that the gas ratio did not affect the average dune front velocity. However, for intermittent flows, the sand bed was transported further downstream relative to hydraulic conveying. It was also observed that the slug body significantly influences sand particle mobility. The physical mechanism of sand transportation was found to be discontinuous with intermittent flows. The sand dune local velocity (within the slug body) was measured to be three times higher than the averaged dune velocities, due to turbulent enhancement within the slug body. |
| DEWEY : |
620.1 |
| ISSN : |
0098-2202 |
| En ligne : |
http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27423 [...] |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheExperimental measurement of laminar axisymmetric flow through confined annular geometries with sudden inward expansion in Transactions of the ASME . Journal of fluids engineering, Vol. 131 N° 12 (Décembre 2009)
