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COBEM 2017
24th ABCM International Congress of Mechanical Engineering
STUDY OF THE PIPE DIAMETER EFFECT ON HORIZONTAL AIR-WATER TWO-PHASE FLOW
Submission Author:
Felipe Jaloretto da Silva , SP
Co-Authors:
Guilherme Gonçalves da Silva, Saon Vieira, Marcelo Souza de Castro, Felipe Jaloretto da Silva
Presenter: Felipe Jaloretto da Silva
doi://10.26678/ABCM.COBEM2017.COB17-1591
Abstract
This study relates the influence of the pipe diameters on the flow characteristics of horizontal two-phase air-water flows at fixed length, to provide new results for multiphase flows in large diameter pipes. Steady-state experiments were ran under constant water flow rate, with 4 different pipe inner diameters (27.3 mm, 52.8 mm, 81.3 mm and 102.7 mm). Results of 81.3 and 102.7 mm i.d. showed different transition boundaries for intermittent and stratified flow patterns when compared with each pipe diameter and published studies. Moreover, data of the 27.3 and 52.8 mm i.d. showed no difference on the transition regions with early known studies. Results obtained were compared with homogeneous and separated flow models. Also, signal analysis of the differential pressure signature on time of each flow pattern were used to determine and compare the characteristics of each flow pattern on the different diameters, besides visual observation.
Keywords
air-water flow, pipe diameter, pressure drop, horizontal pipes, pressure signature, Two-phase Flow, diameter effect
