IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD
Multi-dimensional two-phase phenomena occur in many industrial applications, particularly in a nuclear reactor during steady operation or a transient period. Appropriate modeling of complicated behavior induced by a multi-dimensional flow is important for the reactor safety analysis results. SPACE,...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2013-10-01
|
Series: | Nuclear Engineering and Technology |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573315300474 |
id |
doaj-d3868abd0f03437fa1a6bad52e2171e6 |
---|---|
record_format |
Article |
spelling |
doaj-d3868abd0f03437fa1a6bad52e2171e62020-11-24T22:58:43ZengElsevierNuclear Engineering and Technology1738-57332013-10-0145561362410.5516/NET.02.2013.023IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHODD.J. EUH0S. KIM1B.D. KIM2W.M. PARK3K.D. KIM4J.H. BAE5J.Y. LEE6B.J. YUN7Korea Atomic Energy Research Institute, Daedeok-daero 1045, Yuseong, Daejeon, 305-353, KoreaKorea Atomic Energy Research Institute, Daedeok-daero 1045, Yuseong, Daejeon, 305-353, KoreaKorea Atomic Energy Research Institute, Daedeok-daero 1045, Yuseong, Daejeon, 305-353, KoreaKorea Atomic Energy Research Institute, Daedeok-daero 1045, Yuseong, Daejeon, 305-353, KoreaKorea Atomic Energy Research Institute, Daedeok-daero 1045, Yuseong, Daejeon, 305-353, KoreaKorea Advanced Institute of Science and Technology, 291 Daehakro Yuseong, Daejeon, 305-353, KoreaHandong Global University, HeungHae, Bukgu, Pohang, kyungbuk, 791-708, KoreaBusan National University, Busan-daehakro, Geumjeonggu, Busan, 609-735, KoreaMulti-dimensional two-phase phenomena occur in many industrial applications, particularly in a nuclear reactor during steady operation or a transient period. Appropriate modeling of complicated behavior induced by a multi-dimensional flow is important for the reactor safety analysis results. SPACE, a safety analysis code for thermal hydraulic systems which is currently being developed, was designed to have the capacity of multi-dimensional two-phase thermo-dynamic phenomena induced in the various phases of a nuclear system. To validate the performance of SPACE, a two-dimensional two-phase flow test was performed with slab geometry of the test section having a scale of 1.43 m × 1.43 m × 0.11 m. The test section has three inlet and three outlet nozzles on the bottom and top gap walls, respectively, and two outlet nozzles installed directly on the surface of the slab. Various kinds of two-dimensional air/water flows were simulated by selecting combinations of the inlet and outlet nozzles. In this study, two-dimensional two-phase void fraction profiles were quantified by measuring the local gap impedance at 225 points. The flow conditions cover various flow regimes by controlling the flow rate at the inlet boundary. For each selected inlet and outlet nozzle combination, the water flow rate ranged from 2 to 20 kg/s, and the air flow rate ranged from 2.0 to 20 g/s, which corresponds to 0.4 to 4 m/s and 0.2 to 2.3 m/s of the superficial liquid and gas velocities based on the inlet port area, respectively.http://www.sciencedirect.com/science/article/pii/S1738573315300474Multi-Dimensional FlowTwo-Phase FlowAir-WaterVoid fractionImpedance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
D.J. EUH S. KIM B.D. KIM W.M. PARK K.D. KIM J.H. BAE J.Y. LEE B.J. YUN |
spellingShingle |
D.J. EUH S. KIM B.D. KIM W.M. PARK K.D. KIM J.H. BAE J.Y. LEE B.J. YUN IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD Nuclear Engineering and Technology Multi-Dimensional Flow Two-Phase Flow Air-Water Void fraction Impedance |
author_facet |
D.J. EUH S. KIM B.D. KIM W.M. PARK K.D. KIM J.H. BAE J.Y. LEE B.J. YUN |
author_sort |
D.J. EUH |
title |
IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD |
title_short |
IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD |
title_full |
IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD |
title_fullStr |
IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD |
title_full_unstemmed |
IDENTIFICATION OF TWO-DIMENSIONAL VOID PROFILE IN A LARGE SLAB GEOMETRY USING AN IMPEDANCE MEASUREMENT METHOD |
title_sort |
identification of two-dimensional void profile in a large slab geometry using an impedance measurement method |
publisher |
Elsevier |
series |
Nuclear Engineering and Technology |
issn |
1738-5733 |
publishDate |
2013-10-01 |
description |
Multi-dimensional two-phase phenomena occur in many industrial applications, particularly in a nuclear reactor during steady operation or a transient period. Appropriate modeling of complicated behavior induced by a multi-dimensional flow is important for the reactor safety analysis results. SPACE, a safety analysis code for thermal hydraulic systems which is currently being developed, was designed to have the capacity of multi-dimensional two-phase thermo-dynamic phenomena induced in the various phases of a nuclear system. To validate the performance of SPACE, a two-dimensional two-phase flow test was performed with slab geometry of the test section having a scale of 1.43 m × 1.43 m × 0.11 m. The test section has three inlet and three outlet nozzles on the bottom and top gap walls, respectively, and two outlet nozzles installed directly on the surface of the slab. Various kinds of two-dimensional air/water flows were simulated by selecting combinations of the inlet and outlet nozzles. In this study, two-dimensional two-phase void fraction profiles were quantified by measuring the local gap impedance at 225 points. The flow conditions cover various flow regimes by controlling the flow rate at the inlet boundary. For each selected inlet and outlet nozzle combination, the water flow rate ranged from 2 to 20 kg/s, and the air flow rate ranged from 2.0 to 20 g/s, which corresponds to 0.4 to 4 m/s and 0.2 to 2.3 m/s of the superficial liquid and gas velocities based on the inlet port area, respectively. |
topic |
Multi-Dimensional Flow Two-Phase Flow Air-Water Void fraction Impedance |
url |
http://www.sciencedirect.com/science/article/pii/S1738573315300474 |
work_keys_str_mv |
AT djeuh identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT skim identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT bdkim identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT wmpark identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT kdkim identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT jhbae identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT jylee identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod AT bjyun identificationoftwodimensionalvoidprofileinalargeslabgeometryusinganimpedancemeasurementmethod |
_version_ |
1725646711198580736 |