Articles with "critical flow" as a keyword



Analytic Critical Flow Method (ACFM): A Reliability Allocation Method Based on Analytic Hierarchy Process

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Published in 2017 at "Journal of Failure Analysis and Prevention"

DOI: 10.1007/s11668-017-0353-9

Abstract: RAMS is an acronym for reliability, availability, maintainability and safety. These four properties concern the application of important methodologies to design and manage complex systems. In the present research, starting from the analysis of several… read more here.

Keywords: allocation method; reliability allocation; method; reliability ... See more keywords
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Critical flow prediction using simplified cascade fuzzy neural networks

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Published in 2020 at "Annals of Nuclear Energy"

DOI: 10.1016/j.anucene.2019.107047

Abstract: Abstract In order to identify and quantify reactor coolant leaks in nuclear power plants, it is important to understand and model the leak phenomena of the fluid. When reactor coolant leaks from a high pressure… read more here.

Keywords: cascade fuzzy; fuzzy neural; reactor coolant; model ... See more keywords
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Development of a new full-range critical flow model based on non-homogeneous non-equilibrium model

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Published in 2021 at "Annals of Nuclear Energy"

DOI: 10.1016/j.anucene.2021.108286

Abstract: Abstract Critical flow has significant impact on the reactor safety. Critical flow models are considered as an important module in all system thermal–hydraulic (STH) codes, with several optional models. But each model has its own… read more here.

Keywords: full range; model; critical flow; flow model ... See more keywords
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Critical flow venturi with a step-wall diffuser

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Published in 2019 at "Flow Measurement and Instrumentation"

DOI: 10.1016/j.flowmeasinst.2019.101589

Abstract: Abstract The study investigates the critical flow venturi (CVN) with step-wall diffusers for constant volume gas flow rate in critical flow mode. An analytical method for the estimation of the pressure ratio required for the… read more here.

Keywords: critical flow; flow venturi; step wall; venturi step ... See more keywords
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Critical flow prediction by system codes – Recent analyses made within the FONESYS network

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Published in 2020 at "Nuclear Engineering and Design"

DOI: 10.1016/j.nucengdes.2020.110731

Abstract: Abstract A benchmark activity on Two-Phase Critical Flow (TPCF) prediction was conducted in the framework of the Forum & Network of System Thermal-Hydraulics Nuclear Reactor Thermal-Hydraulics (FONESYS). FONESYS is a network among code developers who… read more here.

Keywords: critical flow; system; flow; fonesys network ... See more keywords
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Analysis of two phase critical flow with a non-equilibrium model

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Published in 2021 at "Nuclear Engineering and Design"

DOI: 10.1016/j.nucengdes.2020.110998

Abstract: Abstract Critical (choked) flow is a highly concerned phenomenon in safety analysis for nuclear energy. During the accident, a large amount of fluid with the aerosol in nuclear power plant (NPP), which are hazardous for… read more here.

Keywords: two phase; analysis; model; critical flow ... See more keywords
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Global uncertainty and sensitivity analysis of MELCOR and TRACE critical flow models against MARVIKEN tests

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Published in 2021 at "Nuclear Engineering and Design"

DOI: 10.1016/j.nucengdes.2021.111150

Abstract: Abstract Uncertainties of numerical predictions play important role in assessment of safety margins in nuclear reactors. Critical Flow models are used in the different types of Nuclear Safety Analysis but these are especially important in… read more here.

Keywords: critical flow; analysis; uncertainty; sensitivity analysis ... See more keywords
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Revisiting the Flow-Driven Translocation of Flexible Linear Chains through Cylindrical Nanopores: Is the Critical Flow Rate Really Independent of the Chain Length?

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Published in 2018 at "Macromolecules"

DOI: 10.1021/acs.macromol.8b02082

Abstract: We aim to clarify how the chain length influences the critical flow rate (qc) for flexible linear chains translocating through cylindrical nanopores in the whole length range (9.5 > R/r > 1.0), where R and… read more here.

Keywords: chain; flow rate; chain length; translocation ... See more keywords
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Numerical Simulation of Supercritical Carbon Dioxide Critical Flow in the Nozzle Tube

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Published in 2018 at "Journal of Nuclear Engineering and Radiation Science"

DOI: 10.1115/1.4037896

Abstract: The supercritical carbon dioxide (S-CO2) Brayton gas turbine cycle has been studied as an efficient and cost-effective option for advanced power systems. One major safety issue for any power cycle is a pipe break and… read more here.

Keywords: phase; nozzle tube; carbon dioxide; simulation ... See more keywords
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Validation of the Moody and Henry–Fauske Critical Flow Models in apros Against Marviken Critical Flow Experiments

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Published in 2020 at "Journal of Nuclear Engineering and Radiation Science"

DOI: 10.1115/1.4046432

Abstract: The Moody and Henry–Fauske critical flow models implemented in Advanced Process Simulation Software (apros) have been validated against Marviken critical flow experiments and compared with other available simulations of the same experiments. Both models in… read more here.

Keywords: fauske critical; flow models; moody henry; critical flow ... See more keywords