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Keywords: void fraction
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Proceedings Papers

Proc. ASME. ICONE29, Volume 7B: Thermal-Hydraulics and Safety Analysis, V07BT07A012, August 8–12, 2022
Paper No: ICONE29-92492
... Abstract Two-phase flow measurement with high precision plays a significant role in safe and efficient operation of nuclear reactor. This paper focuses on the void fraction of gas-liquid flow in a non-transparent tube with the inner diameter of 13mm. X-ray computer tomography (CT) is considered...
Proceedings Papers

Proc. ASME. ICONE29, Volume 7A: Thermal-Hydraulics and Safety Analysis, V07AT07A052, August 8–12, 2022
Paper No: ICONE29-91755
... Abstract Modelling of the subcooled flow boiling is important in many industrial fields, such as in nuclear steam generators, satellites, and space vehicles. It is especially important in the nuclear engineering since an accurate knowledge of interfacial behaviors and void fraction...
Proceedings Papers

Proc. ASME. ICONE29, Volume 15: Student Paper Competition, V015T16A111, August 8–12, 2022
Paper No: ICONE29-93313
..., the analysis of the phase distribution characteristics such as the void fraction and the interfacial area concentration is helpful to research the two-fluid model and interfacial area transport equation. Based on the completed flow pattern experiment, an air-water two-phase flow characteristic experiment...
Proceedings Papers

Proc. ASME. ICONE28, Volume 2: Nuclear Fuels, Research, and Fuel Cycle; Nuclear Codes and Standards; Thermal-Hydraulics, V002T07A001, August 4–6, 2021
Paper No: ICONE28-60406
... Proceedings of the 2021 28th International Conference on Nuclear Engineering ICONE28 August 4-6, 2021, Virtual, Online ICONE28-60406 VOID FRACTION MEASUREMENT AND PREDICTION OF TWO-PHASE BOILING FLOWS IN A TUBULAR TEST SECTION Qingqing Liu1, Julio Diaz1, Victor Petrov1, Adam Burak1, Annalisa...
Proceedings Papers

Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A093, August 4–6, 2021
Paper No: ICONE28-66240
... were respectively based on small and large experimental sections to study critical flow, void fraction distribution, two-phase level, and other characteristics under reactor blowdown conditions. FRIGG tests, using steam and water as the two-phase working fluid, studied the steady-state distribution...
Proceedings Papers

Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A092, August 4–6, 2021
Paper No: ICONE28-66238
...-phase flow regime and interfacial structure characteristics, the air-water experiment with an adiabatic vertical channel of 4 × 66 × 1800, 6 × 66 × 1800 mm have been conducted under atmosphere pressure condition. The impedance void meter was used to measure the global void fraction in narrow rectangular...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A014, August 4–5, 2020
Paper No: ICONE2020-16211
... and the pitch is 44.6mm. The total length of the dual sub-channels tight lattice is 3m. A self-developed 16 × 32 Wire-mesh sensor (WMS) was used to measure the void fraction distribution of air-water two-phase flow in the dual sub-channels tight lattice channel. The spatial resolution of the WMS is 2.79mm...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A026, August 4–5, 2020
Paper No: ICONE2020-16434
...). This paper also illustrates further research aspects needed to discuss the effect of its results on FP removal efficiency in a SA, and to acquire comprehensive physics behind such gas property influences on two-phase flow. Keywords: Pool Scrubbing, Two-Phase Flow, Gas Hold-Up, Void Fraction, Wire-Mesh Sensor...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A022, August 4–5, 2020
Paper No: ICONE2020-16836
...-upward elbow with the computational fluid dynamics (CFD) simulation. The Eulerian-Eulerian two-fluid model and the Multi Size Group (MUSIG) model are used to predict the development of the detailed interfacial structures between the two phases. The axial development of the void fraction...
Proceedings Papers

Proc. ASME. ICONE20-POWER2012, Volume 3: Thermal-Hydraulics; Turbines, Generators, and Auxiliaries, 173-180, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-54295
... (Onset of Significant Vapor) emerges much earlier in narrow channel when comparing with that in conventional channel. A revised correlation for prediction of the real void fraction is proposed based on the experimental investigation. It is also found that the bubble behavior affects the pressure drop...
Proceedings Papers

Proc. ASME. ICONE20-POWER2012, Volume 5: Fusion Engineering; Student Paper Competition; Design Basis and Beyond Design Basis Events; Simple and Combined Cycles, 119-128, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-54327
... influenced by the two phase flow characteristics of liquid metal-inert gas. In this study, the numerical research has been performed to evaluate the natural circulation capability of lead-bismuth cooled ADS with gas-lift pump. The drift flow theory, void fraction prediction model and friction pressure drop...
Proceedings Papers

Proc. ASME. ICONE16, Volume 2: Fuel Cycle and High Level Waste Management; Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 955-960, May 11–15, 2008
Paper No: ICONE16-48768
... computer code SERAPHIM has been developed by JAEA. The comparison of simulation results with experimental data to verify the adequacy of SERAPHIM code or to upgrade it are now required. In our paper at ICONE15, we report the void fraction and the entrainment pattern of water around a single rod set...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 3, 893-899, April 14–18, 2002
Paper No: ICONE10-22526
... Thus, it is co equilibrium at t KEYWORD : Slip Ratio, Void Fraction INTRODUCTION The two-phase critical flow has been the topic of the many analytical and experimental researches, because this phenomenon is very important in the safety analysis of the nuclear power plant. The critical flow rate...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 3, 473-480, April 14–18, 2002
Paper No: ICONE10-22313
... parameters include void fraction (α), interfacial area concentration (a i ), bubble frequency (f b ), bubble velocity (U b ) and bubble Sauter mean diameter (D sm ). The radial profiles of these parameters and their development along the axial direction reveals the structure of the two phase mixture...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 3, 997-1003, April 14–18, 2002
Paper No: ICONE10-22625
... 05 03 2009 In two-fluid modeling and three-fluid modeling, the accurate prediction of the interfacial area concentration, interfacial heat transfer and interfacial shear stress, were required. In this works, the axial profiles of void fraction, interfacial area concentration...
Proceedings Papers

Proc. ASME. ICONE12, 12th International Conference on Nuclear Engineering, Volume 2, 253-264, April 25–29, 2004
Paper No: ICONE12-49161
... and damage numbers, added mass, wear work rates, void fraction for two-phase, turbulence and acoustic considerations etc.) of tube bundles with respect to cross flow-induced vibration. The code has been validated against Tubular Exchanger Manufacturers (TEMA), Flow-Induced Vibration code (FIV), and results...