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Keywords: Flow instability
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Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A019, August 4–5, 2020
Paper No: ICONE2020-16294
.... Especially when a reactor is running at a low power, the flow rate of the secondary side of OTSG is extremely small and the single-phase region of the secondary side of OTSGs is also too small. The two-phase flow instability may occur, which has a serious impact on reactor operation and safety. So...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A020, August 4–5, 2020
Paper No: ICONE2020-16296
... was designed to investigate the flow instability for a BWR-type novel modular reactor (NMR). The simulations by RELAP5/MOD3.4 code had been performed under various conditions by changing system pressure, core inlet subcooling, core inlet flow resistance, and core heat power etc. The flow stability...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A043, August 4–5, 2020
Paper No: ICONE2020-16766
...Abstract Abstract A theoretical model for Density Wave Oscillations (DWOs) flow instability in parallel rectangular channels under periodic heaving motion is established with a lumped mathematical model based on homogenous hypothesis. The parallel rectangular channels comprise of the entrance...
Proceedings Papers

Proc. ASME. ICONE21, Volume 4: Thermal Hydraulics, V004T09A051, July 29–August 2, 2013
Paper No: ICONE21-15632
..., Shanghai,China Tel. +86-010-58197320, Email: lifei@snptc.com.cn ABSTRACT ERVC is widely adopted as a part of in-vessel retention (IVR) in severe accident management strategies. In this paper two-phase flow instability in natural circulation loops of external reactor vessel cooling (ERVC) system in a large...
Proceedings Papers

Proc. ASME. ICONE21, Volume 4: Thermal Hydraulics, V004T09A030, July 29–August 2, 2013
Paper No: ICONE21-15315
... Experimental Research of flow instability onset conditions in a natural circulation system with subcooled boiling Pan Liang-ming Key Laboratory of Low-grade Energy Utilization Technologies and Systems, (Chongqing University), Chongqing, 400044, China Li Jia Key Laboratory of Low-grade Energy...
Proceedings Papers

Proc. ASME. ICONE20-POWER2012, Volume 3: Thermal-Hydraulics; Turbines, Generators, and Auxiliaries, 71-78, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-54125
... Moisture separator reheater for nuclear steam turbine system of light water reactor, a combined equipment of mist separator and in-tube side condensing multi-tube type heat exchanger, has an inherent issue of flow instability inside the tubes. The issue causes the temperature oscillation...
Proceedings Papers

Proc. ASME. ICONE20-POWER2012, Volume 5: Fusion Engineering; Student Paper Competition; Design Basis and Beyond Design Basis Events; Simple and Combined Cycles, 129-136, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-54361
...THEORETICAL STUDY ON THE FLOW INSTABILITY OF SUPERCRITICAL WATER IN THE PARALLEL CHANNELS Yali Su Xi'an Jiaotong University Xi'an, Shaanxi, China Jian Feng Xi'an Jiaotong University Xi'an, Shaanxi, China Wenxi Tian Xi'an Jiaotong University Xi'an, Shaanxi, China Suizheng Qiu Xi'an Jiaotong...
Proceedings Papers

Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 991-998, May 17–21, 2010
Paper No: ICONE18-30031
... earlier, when the difference between the cycles is large, the impact of rolling can also be ignored. The influence of inclination on the oscillation in parallel channels is feeble. KEYWORDS: RLEP5/MC; ocean condition; flow instability; parallel double-channel 1 INTRODUCTION Systems of parallel boiling...
Proceedings Papers

Proc. ASME. ICONE17, Volume 3: Thermal Hydraulics; Current Advanced Reactors: Plant Design, Construction, Workforce and Public Acceptance, 659-669, July 12–16, 2009
Paper No: ICONE17-75790
... bundle. MSR Heat transfer Flow instability Mist separation Optimum design 1 Proceedings of the 17th International Conference on Nuclear Engineering INCONE 17 July 12-16, 2009, Brussels, Belgium ICONE 17-75790 Recent Design Technologies of Moisture Separator Reheater Abstract This paper...
Proceedings Papers

Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 639-644, May 11–15, 2008
Paper No: ICONE16-48595
... 09 07 2009 A narrow annular test section of 1.5mm gap and 1800mm length was designed and manufactured, with good tightness and insulation. Experiments were carried out to investigate characteristics of flow instability of forced-convection in vertical narrow annuli. Using distilled...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 3, 41-51, April 14–18, 2002
Paper No: ICONE10-22037
... conditions between the heating reactor and the boiling water reactor, the flow behavior presents great differences too, some of which haven’t been deeply studied so far. Results show that in heating reactor, sub-cooled boiling, condensation and flashing play an important role on the flow instabilities...
Proceedings Papers

Proc. ASME. ICONE12, 12th International Conference on Nuclear Engineering, Volume 1, 259-268, April 25–29, 2004
Paper No: ICONE12-49075
... been used to determine the onset of flow instability. With suitable inlet orificing, the hot channel of SCWR has been found to be stable. Sensitivity studies show that the hot channel decay ratio reaches the critical value of 0.5 when either the reactor power is raised to 118% of full power or the core...
Proceedings Papers

Proc. ASME. ICONE14, Volume 2: Thermal Hydraulics, 99-106, July 17–20, 2006
Paper No: ICONE14-89109
... to analysis of flow instabilities in steam generator and to study the effects of system pressure, mass flux, inlet temperature and inlet/outlet restriction, gap size, the ratio of do/di and the ratio of qi/qo on system behavior. Steam generator Forced-convection Flow instability Proceedings...