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Title: Interfacial area transport in bubbly flow

In order to close the two-fluid model for two-phase flow analyses, the interfacial area concentration needs to be modeled as a constitutive relation. In this study, the focus was on the investigation of the interfacial area concentration transport phenomena, both theoretically and experimentally. The interfacial area concentration transport equation for air-water bubbly up-flow in a vertical pipe was developed, and the models for the source and sink terms were provided. The necessary parameters for the experimental studies were identified, including the local time-averaged void fraction, interfacial area concentration, bubble interfacial velocity, liquid velocity and turbulent intensity. Experiments were performed with air-water mixture at atmospheric pressure. Double-sensor conductivity probe and hot-film probe were employed to measure the identified parameters. With these experimental data, the preliminary model evaluation was carried out for the simplest form of the developed interfacial area transport equation, i.e., the one-dimensional transport equation.
Authors:
; ;  [1]
  1. Purdue Univ., West Lafayette, IN (United States) [and others
Publication Date:
OSTI Identifier:
569617
Report Number(s):
CONF-9705121--
ON: DE98000902; TRN: 98:009293
Resource Type:
Conference
Resource Relation:
Conference: 15. symposium on energy engineering sciences, Argonne, IL (United States), 14-16 May 1997; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of the fifteenth symposium on energy engineering sciences; PB: 285 p.
Research Org:
Argonne National Lab., IL (United States)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 66 PHYSICS; TWO-PHASE FLOW; FLOW MODELS; INTERFACES; BUBBLES; PIPES; AIR-WATER INTERACTIONS; HYDRAULIC TRANSPORT