Results 1 to 10 of about 293 (170)

Modeling of deposition and erosion of CRUD on fuel surfaces under sub-cooled nucleate boiling in PWR

Nuclear Engineering and Technology, 2023
Simulating the Corrosion-Related Unidentified Deposit (CRUD) on the surface of fuel assemblies is necessary to predict the axial offset anomaly and the localized corrosion induced by the CRUD during the operation of nuclear power plants. A new CRUD model
Seungjin Seo, Nakkyu Chae, Samuel Park, Richard I. Foster, Sungyeol Choi   +4 more
doaj   +5 more sources

MINIMIZING CRUD DEPOSITION THROUGH OPTIMIZATION OF ASSOCIATED PARAMETERS [PDF]

EPJ Web of Conferences, 2021
A strong correlation exists between subcooled boiling in assembly subchannels and CRUD deposition. In this work a genetic algorithm is used to optimize a 17 x 17 PWR fuel assembly to have minimized subcooled boiling, minimized peak kinf, and maximized ...
Andersen Brian, Hou Jason, Kropaczek Dave   +2 more
doaj   +4 more sources

Effect of zinc injection on crud deposition and boron precipitation on fuel cladding surface

He jishu, 2023
BackgroundUnder the condition of sub-cooled nucleate boiling (SNB), corrosion products in primary coolant of nuclear reactor will deposit on the outer surface of fuel cladding, which is commonly called fuel crud. Previous literature shown, zinc injection
LIAO Jiapeng, MAO Yulong, RUAN Tianming, HU Yousen, JIN Desheng, LI Jinggang, CHEN Zhongcun   +6 more
doaj   +3 more sources

Exploring the effect of cathodic polarization to mitigate CRUD deposition

Nuclear Engineering and Design, 2020
Cathodic polarization is investigated as a technique for CRUD build-up mitigation in simulated primary pressurized water reactor conditions and accelerated flow. This investigation showed that the application of 3 V could induce a 67% reduction in surface deposition whilst 30 V cell voltage completely prevented the formation of surface deposits.
Stefano Cassineri, M Curioni, F Scenini   +2 more
exaly   +5 more sources

A Novel Method for Controlling Crud Deposition in Nuclear Reactors Using Optimization Algorithms and Deep Neural Network Based Surrogate Models

Eng, 2022
This work presents the use of a high-fidelity neural network surrogate model within a Modular Optimization Framework for treatment of crud deposition as a constraint within light-water reactor core loading pattern optimization.
Brian Andersen, Jason Hou, Andrew Godfrey, Dave Kropaczek   +3 more
doaj   +2 more sources

Effect of core power variation on crud deposition behavior on fuel cladding surface

He jishu, 2022
BackgroundFor a pressurized water reactor (PWR), under the synthesis effects of primary water chemistry, reactor operation mode, system facilities replacement, fuel design and management, the corrosion products in primary coolant will deposit on the ...
LIAO Jiapeng, YE Jie, JIN Desheng, SHANG Chaohao, HU Yousen   +4 more
doaj   +2 more sources

Proof-of-principle of high-fidelity coupled CRUD deposition and cycle depletion simulation [PDF]

Annals of Nuclear Energy, 2015
Abstract A multiphysics framework for the high-fidelity simulation of CRUD deposition is developed to better understand the coupled physics and their respective feedback mechanisms. This framework includes the primary physics of lattice depletion, computational fluid dynamics, and CRUD chemistry.
Brian K Kendrick, VÍCTOR Petrov, Annalisa Manera   +2 more
exaly   +2 more sources

Optimization method to determine mass transfer variables in a PWR crud deposition risk assessment tool [PDF]

Journal of Nuclear Science and Technology, 2016
ABSTRACTOptimization numerical method was implemented to determine several mass transfer coefficients in a crud-induced power shift risk assessment code. The approach was to utilize a multilevel strategy that targets different model parameters that first changes the major order variables, mass transfer inputs, then calibrates the minor order variables,
Chuong Do, Dennis Hussey, Kenny Epperson, Daniel M. Wells   +3 more
exaly   +2 more sources

Coupled heat and mass transfer simulation of CRUD migration and deposition in PWR systems

Nuclear Engineering and Technology
In Pressurized Water Reactors (PWRs), corrosion products are released during operation due to the large contact area between the primary circuit coolant and the equipment materials.
Xuesong Li, Meng Zhang, Yang Gao, Hongguo Hou, Caishan Jiao, Nan Chao   +5 more
doaj   +2 more sources

Two-phase Boiling Heat and Mass Transfer Characteristic within PWR CRUD Deposition

Yuanzineng kexue jishu, 2022
The porous chalk river unidentified deposit (CRUD) depositions not only increase the thermal resistance and lead to the deterioration of heat transfer, but also change the power distribution as a result of boron hideout. Therefore, accurate prediction of
LIU Yan;LIU Xiaojing;HE Hui
doaj   +1 more source