Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures

Basar Ozar; Dong-Jin Euh; Takashi Hibiki; Mamoru Ishii

Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures

Basar Ozar^*
, Dong-Jin Euh
, Takashi Hibiki
, Mamoru Ishii

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

The interfacial area transport of vertical, upward, air-water two-phase flows in an annular channel has been investigated at different system pressures. The inner and outer diameters of the annular channel were 19.1 mm and 38.1 mm, respectively. Twenty three inlet flow conditions were selected, which coverED bubbly, cap-slug, and churn-turbulent flows. These flow conditions also overlapped with twelve conditions of our previous study for comparison. The local flow parameters, such as void fractions, interfacial area concentrations (IAC), and bubble interface velocities, were measured at nine radial positions for the three axial locations (z/Dh=52, 149 and 230) and converted into area-averaged parameters. The axial evolutions of local flow structure was interpreted in terms of bubble coalescence, breakup, expansion of the gas-phase due to pressure drop and system pressure. An assessment of interfacial area transport equation (IATE) was made and compared with the experimental data. A discussion of the comparison between model prediction and the experimental results were made.

Original language	English
Title of host publication	International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009
Publisher	Atomic Energy Society of Japan
Pages	1500-1509
Volume	2
ISBN (Print)	9781617386084
Publication status	Published - 2009
Externally published	Yes
Event	International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 - Shinjuku, Tokyo, Japan Duration: 10 May 2009 → 14 May 2009

Conference

Conference	International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009
Place	Japan
City	Shinjuku, Tokyo
Period	10/05/09 → 14/05/09

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures",

abstract = "The interfacial area transport of vertical, upward, air-water two-phase flows in an annular channel has been investigated at different system pressures. The inner and outer diameters of the annular channel were 19.1 mm and 38.1 mm, respectively. Twenty three inlet flow conditions were selected, which coverED bubbly, cap-slug, and churn-turbulent flows. These flow conditions also overlapped with twelve conditions of our previous study for comparison. The local flow parameters, such as void fractions, interfacial area concentrations (IAC), and bubble interface velocities, were measured at nine radial positions for the three axial locations (z/Dh=52, 149 and 230) and converted into area-averaged parameters. The axial evolutions of local flow structure was interpreted in terms of bubble coalescence, breakup, expansion of the gas-phase due to pressure drop and system pressure. An assessment of interfacial area transport equation (IATE) was made and compared with the experimental data. A discussion of the comparison between model prediction and the experimental results were made.",

author = "Basar Ozar and Dong-Jin Euh and Takashi Hibiki and Mamoru Ishii",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].; International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 ; Conference date: 10-05-2009 Through 14-05-2009",

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Ozar, B, Euh, D-J, Hibiki, T & Ishii, M 2009, Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures. in International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. vol. 2, Atomic Energy Society of Japan, pp. 1500-1509, International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009, Shinjuku, Tokyo, Japan, 10/05/09.

Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures. / Ozar, Basar; Euh, Dong-Jin; Hibiki, Takashi et al.
International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009. Vol. 2 Atomic Energy Society of Japan, 2009. p. 1500-1509.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

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AU - Ozar, Basar

AU - Euh, Dong-Jin

AU - Hibiki, Takashi

AU - Ishii, Mamoru

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2009

Y1 - 2009

N2 - The interfacial area transport of vertical, upward, air-water two-phase flows in an annular channel has been investigated at different system pressures. The inner and outer diameters of the annular channel were 19.1 mm and 38.1 mm, respectively. Twenty three inlet flow conditions were selected, which coverED bubbly, cap-slug, and churn-turbulent flows. These flow conditions also overlapped with twelve conditions of our previous study for comparison. The local flow parameters, such as void fractions, interfacial area concentrations (IAC), and bubble interface velocities, were measured at nine radial positions for the three axial locations (z/Dh=52, 149 and 230) and converted into area-averaged parameters. The axial evolutions of local flow structure was interpreted in terms of bubble coalescence, breakup, expansion of the gas-phase due to pressure drop and system pressure. An assessment of interfacial area transport equation (IATE) was made and compared with the experimental data. A discussion of the comparison between model prediction and the experimental results were made.

AB - The interfacial area transport of vertical, upward, air-water two-phase flows in an annular channel has been investigated at different system pressures. The inner and outer diameters of the annular channel were 19.1 mm and 38.1 mm, respectively. Twenty three inlet flow conditions were selected, which coverED bubbly, cap-slug, and churn-turbulent flows. These flow conditions also overlapped with twelve conditions of our previous study for comparison. The local flow parameters, such as void fractions, interfacial area concentrations (IAC), and bubble interface velocities, were measured at nine radial positions for the three axial locations (z/Dh=52, 149 and 230) and converted into area-averaged parameters. The axial evolutions of local flow structure was interpreted in terms of bubble coalescence, breakup, expansion of the gas-phase due to pressure drop and system pressure. An assessment of interfacial area transport equation (IATE) was made and compared with the experimental data. A discussion of the comparison between model prediction and the experimental results were made.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84907990262&origin=recordpage

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781617386084

VL - 2

SP - 1500

EP - 1509

BT - International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009

PB - Atomic Energy Society of Japan

T2 - International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009

Y2 - 10 May 2009 through 14 May 2009

ER -

Interfacial area transport of vertical upward air-water two-phase flow in an annulus at elevated pressures

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