Characterization of water-air dispersed two phase flow

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Tipo di pubblicazione: Articolo in atti di convegno
Tipologia MIUR: Contributo in Atti di Convegno (Proceeding) > Contributo in atti di convegno
Titolo: Characterization of water-air dispersed two phase flow
Autori: Falcone, Nicolò; Bersano, Andrea; Bertani, Cristina; De Salve, Mario; Panella, Bruno
Autori di ateneo:
Intervallo pagine: pp. 66-73
Titolo del periodico: ENERGY PROCEDIA
Tipo di referee: Comitato scientifico
Editore: Elsevier
ISSN: 1876-6102
Volume: 126C
Titolo del convegno: 72nd Conference of the Italian Thermal Machines Engineering Association, ATI2017
Luogo dell'evento: Lecce, Italy
Data dell'evento: 6–8 September 2017
Abstract: The analysis of two phase flow has a great relevance in many industrial sectors such as nuclear and process industry. The study and the measurement of the related phenomena are particularly dicult due to the variety of the parameters that aect the flow (void fraction, flow regime, orientation, etc.). Measurement instrumentation for two phase flow is nowadays very limited even if it would be highly useful in the industrial field. Before approaching the research and development toward the realization of innovative instrumentation for two-phase flow measurement, it is fundamental a precise description of the particular flow regime of interest. Dispersed water droplets in air/gas is a possible flow regime at high gas void fractions; therefore it is important to characterize this particular flow pattern in a detailed way. To reproduce this condition in a laboratory environment it is possible to use nozzles with very small outlet diameters and high pressure water supply. In this paper the characterization of dispersed flow is performed as function of the nozzle characteristic and water inlet pressure. The tests are performed using an experimental setup realized at the Energy Department at Politecnico di Torino. The water jet is observed in a PMMA (PolyMethylMethacrylate) pipe 1.8 meters long with an inner diameter of 78 mm. High pressure water is obtained using a plunger pump and pump inlet water pressure is adjustable in the range 1-4 bar.Water pressure upstream the nozzle and air entrainment flow rate are measured and used as primary parameters of the study. A sensitivity analysis on these two parameters is performed with the purpose to find the conditions that are optimal to reproduce a dispersed flow.
Data: 2017
Status: Pubblicato
Lingua della pubblicazione: Inglese
Parole chiave: spray, two-phase flow, dispersed flow, nozzle
Dipartimenti (originale): DENERG - Dipartimento Energia
Dipartimenti: DENERG - Dipartimento Energia
URL correlate:
    Area disciplinare: Area 09 - Ingegneria industriale e dell'informazione > IMPIANTI NUCLEARI
    Data di deposito: 12 Set 2017 13:43
    Data ultima modifica (IRIS): 12 Set 2017 13:56:08
    Data inserimento (PORTO): 14 Set 2017 02:06
    Permalink: http://porto.polito.it/id/eprint/2679804
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