Results 11 to 20 of about 1,546,971 (249)

Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid [PDF]

open access: yesFrontiers in Energy Research, 2021
Axial and lateral pressure loss in a 5 × 5 rod–bundle with a split-type mixing vane spacer grid was experimentally measured using differential pressure transmitters at different sub-channel Reynolds numbers (Re) and orienting angles.
Wenhai Qu   +3 more
doaj   +2 more sources

Experimental Study on Heat Transfer Characteristics of Rod Bundle Channel in Natural Circulation under Rolling Motion Condition [PDF]

open access: yesYuanzineng kexue jishu
Affected by sea wind and waves, the floating nuclear power plant (FNPP) would be in rolling motion during operation. The rolling motion will introduce fluctuated inertial force periodically, resulting in periodic thermal and hydraulic parameters ...
LI Xin1, WANG Shuang1, TAN Sichao1, , QIAO Shouxu1, TIAN Ruifeng1, CHENG Kun2
doaj   +2 more sources

Numerical Study of Deposition Characteristic of Corrosion Product in Lead-bismuth Cooled Wire-wrapped Rod Bundle [PDF]

open access: yesYuanzineng kexue jishu
Lead-based reactor using liquid lead-bismuth alloys as coolant has many advantages and is a promising type of fourth-generation reactors for a wide range of applications.
HUANG Rui, SUN Yubo, FU Junsen, XIAO Yao, GU Hanyang
doaj   +2 more sources

Experimental study on natural circulation neutronic-thermo-hydraulic coupling characteristics of rod bundle channel under rolling motion condition

open access: yesHe jishu
BackgroundThe floating nuclear power plant (FNPP) is a vital energy supply method for future ocean exploitation and island construction. The typical fuel type of FNPP is similar to the onshore nuclear power plant, i.e., the rod bundle fuel assembly.
LI Xin   +4 more
doaj   +2 more sources

Prediction of critical heat flux in a rod bundle channel with spacer grids based on the Eulerian two-fluid model [PDF]

open access: yesFrontiers in Energy Research
The critical heat flux (CHF) is a vital parameter influencing the safety and efficiency of reactor cores. In this study, the Eulerian two-fluid model coupled with the extended wall boiling model in STAR-CCM+ was employed to simulate the departure from ...
Li Kejia   +7 more
doaj   +2 more sources

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

Flow Heat Transfer Characteristic in Rod Bundle Channel in Natural Circulation System for Rolling Condition

open access: yesYuanzineng kexue jishu, 2022
There is mixing and second flow in sub-channels of the rod bundle. The flow and heat transfer characteristics in rod bundle are more complex than those in rectangular channel and round pipes.
BI Jingliang;XIE Feng;HUANG Yanping;XU Jianjun;YUAN Dewen;ZAN Yuanfeng
doaj  

Turbulent-Prandtl-number models for liquid lead-bismuth in triangular rod bundles

open access: yesHe jishu, 2022
BackgroundIn order to accurately predict the heat transfer characteristics in the sub-channel of fuel assembly for the low Prandtl number fluid, it is necessary to select a suitable turbulent-Prandtl-number model.PurposeThis study aims at the ...
LIU Shuyong   +5 more
doaj   +1 more source

Modeling and Simulation Analysis on Mixing Characteristics of Two-Phase Flow Around Spacer Grid

open access: yesFrontiers in Energy Research, 2022
The spacer grid has a significant impact on the thermal-hydraulic characteristics of the rod bundle channel, which directly determines the possibility of a boiling crisis.
Y. Xiao   +5 more
doaj   +1 more source

Spacer effects on thermal-hydraulic performance of fluid flow at supercritical pressure in annular channel - CFD methodology

open access: yesJournal of Mechanical Engineering and Sciences, 2022
Spacer is a vital component in assembly of nuclear fuel rod bundles. It is used to support and maintain suitable distance between the rods in assembly of nuclear fuel bundle.
Satish Kumar Dhurandhar   +2 more
doaj   +1 more source

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