Results 41 to 50 of about 4,122 (158)

Analysis of typical flow blockage accidents of single annular fuel assembly for lead-bismuth cooled fast reactor

open access: yesHe jishu, 2023
BackgroundThe annular fuel assembly of lead-bismuth cooled fast reactor has many safety advantages, but during its operation, due to the corrosive effect of lead-bismuth coolant, it is prone to blockage accidents, resulting in deterioration of heat ...
CHEN Qi   +4 more
doaj   +1 more source

Numerical simulation to study mixing vane spacer effects on heat transfer performance of supercritic

open access: yesJournal of Thermal Engineering, 2023
The spacer represents an essential part in the nuclear fuel rod. Spacer grid with mixing vanes in fuel rod bundle of nuclear reactor core has a significant impact on heat transfer performance in downstream to grid spacer.
Satish Kumar DHURANDHAR   +2 more
doaj   +1 more source

Numerical Study on Coolant Flow and Heat Transfer Characteristics in Annular Fuel

open access: yesYuanzineng kexue jishu, 2023
Annular fuel element is a new type of fuel element proposed by Massachusetts Institute of Technology. The fuel element structure adopts double channel cooling structure with internal and external cooling simultaneously. Compared with the traditional rod-
ZHOU Yunlong;WU Mingting;HUANG Na;LI Hongwei
doaj  

Thermal hydraulic analysis of a PWR loaded with annular fuel rods

open access: yesBrazilian Journal of Radiation Sciences, 2021
In 2006, the final report of the MIT Center for Advanced Nuclear Energy Center the project entitled High Performance Fuel Design for Next Generation PWR’s presented the proposal of an internal and external cooled ring fuel with the objective of ...
Wallen Ferreira De Souza   +3 more
doaj   +1 more source

Temperature Field Progression in Annular Tube Around Heated Rod in Respect to the Mass Flow of Coolant [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2010
The paper looks into liquid flow simulation in the annular tube around the heated rod. The numerical simulation serves primarily the purpose of describing the temperature field in the annular tube that represents a simplified model of a nuclear reactor ...
David LÁVIČKA
doaj  

Analyzing (Th-233U-235U)O2 fuel performance in various assembly configurations: A comparative neutronic study [PDF]

open access: yesNuclear Energy and Technology
This article investigates alternate fuel options for Pressurized Water Reactors (PWRs), focusing on thorium use to address safety, efficiency, and waste issues associated with standard UO2 fuel.
Fadi El Banni   +3 more
doaj   +3 more sources

Preliminary Analysis of the Cladding Mechanical Behavior of a Nuclear Superheat Boiling Water Reactor [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2018
In the present study, investigation of mechanical behaviour of the fuel cladding material for a nuclear superheat Boiling Water Reactor with annular fuel rods, is carried out.
Majid Bahonar   +2 more
doaj  

Evaluation of SiC cladded annular fuel as accident tolerant fuel for PWRs

open access: yes, 2023
Nuclear energy produced by Light Water Reactors (LWRs) was in the spotlight in the aftermath of the Fukushima disaster, which led to the development of Accident Tolerant Fuels (ATF). ATF desires to improve fuel safety and performance under normal and accident operating conditions.
openaire   +1 more source

Investigation on the effect of void fraction on annular fuel flow distribution ratio

open access: yesNuclear Engineering and Technology
Annular fuel assemblies feature a dual cooling channel configuration (inner and outer channels), where void fraction variations significantly affect channels flow distribution as reactor power increases. To address this thermal-hydraulic challenge, a 1/8-
Yongyu Zhang   +7 more
doaj   +1 more source

Investigation of the Al2O3/ Water Nano-Fluid Concentration and Size Effects on the Neutronics and Thermal-Hydraulic Parameters in the VVER-1000 Nuclear Reactor Using Artificial Neural Networks [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2018
Nowadays, many researches have been done to improve the efficiency of the nuclear power plants, one of which is the use of the dual cooled annular fuel which is an internally and externally cooled annular fuel with many advantages in heat transfer ...
M Rezaee   +2 more
doaj  

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