Sub-channel CFD for nuclear fuel bundles [PDF]
Nuclear Engineering and Design, 2019 This paper presents a novel Computational Fluid Dynamics (CFD)-based sub-channel framework for nuclear power plants, which combines the advantageous features of modern CFD and traditional 1-D sub-channel codes. The new method is capable of producing CFD-level 3-D results with locally desirable refinement when coupled with embedded resolved models, but ...
Liu, B., He, S., Moulinec, C., Uribe, J.
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DETAILS OF OPERATIONS PERFORMED BY THE REMOTE CONTROL ROBOT (CONCEPT) TO THE HORIZONTAL FUEL CHANNEL DURING DECOMMISSIONING PHASE OF NUCLEAR REACTOR CALANDRIA STRUCTURE. PART I: OUTSIDE OPERATIONS [PDF]
Fiabilitate şi Durabilitate, 2017 The authors contribution to this paper is to present a concept solution of a remote control robot (RCR) used for the horizontal fuel channels pressure tube decommissioning in the CANDU nuclear reactor.
Constantin POPESCU +2 more
doaj
Test bench for gas-dynamic studies in the furnace channel for nuclear fuel pellet sintering [PDF]
Nuclear Energy and Technology, 2019 Nuclear fuel pellets are sintered in high-temperature furnaces in an atmosphere with strictly defined requirements for the composition of the gas environments in the furnace’s different temperature zones.
Ilya V. Kuzmin +4 more
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CFD simulation of partial channel blockage on plate-type fuel of TRIGA-2000 conversion reactor core
Acta Polytechnica, 2022 A nuclear reactor cooling system that has been operating for a long time can carry some debris into a fuel coolant channel, which can result in a blockage. An in-depth two-dimensional simulation of partial channel blockage can be carried out using FLUENT
Sukmanto Dibyo +4 more
doaj +1 more source
CONSIDERATIONS FOR THE DEVELOPMENT OF A DEVICE FOR THE DECOMMISSIONING OF THE HORIZONTAL FUEL CHANNELS IN THE CANDU 6 NUCLEAR REACTOR PART 5 - FUEL CHANEL DECOMMISSIONING [PDF]
Fiabilitate şi Durabilitate, 2014 As many nuclear power plants are reaching their end of lifecycle, the decommissioning of these installations has become one of the 21st century’s great challenges. Each project may be managed differently, depending on the country, development policies,
Gabi ROSCA FARTAT +2 more
doaj
The effects of water and microstructure on the performance of polymer electrolyte fuel cells [PDF]
, 2006 n this paper, we present a comprehensive non-isothermal, one-dimensional model of the cathode side of a Polymer Electrolyte Fuel Cell. We explicitly include the catalyst layer, gas diffusion layer and the membrane.
Shah, A. +6 more
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PARTICULARITIES REGARDING THE OPERATING PROCESS OF THE CUTTING AND EXTRACTION DEVICE IN THE CANDU HORIZONTAL FUEL CHANNELS PRESSURE TUBE DECOMMISSIONING PART I: MOVEMENT AND FIXING DEVICE INSIDE THE PRESSURE TUBE [PDF]
Fiabilitate şi Durabilitate, 2016 This paper presents some details of operation process for a Cutting and Extraction Device (CED) in order to achieve the decommissioning of the horizontal fuel channels pressure tube in the CANDU 6 nuclear reactor.
Constantin POPESCU +5 more
doaj
Impact on Fuel Transport Efficiency in Anode of Planar Solid Oxide Fuel Cells
International Journal of Electrochemical Science, 2013 This work establishes a mathematical model of fuel transport efficiency in anode that permeates from the surface to the triple phase boundaries through the porous electrode of solid oxide fuel cells.
Fuxing Miao
doaj +1 more source
CONCEPTUAL FUEL CHANNEL DESIGNS FOR CANDU-SCWR
Nuclear Engineering and Technology, 2008 This paper presents two of the fuel channel designs being considered for the CANDU-SCWR, a pressure-tube type supercritical water cooled reactor. The first is an insulated pressure tube design. The pressure tube is thermally insulated from the hot coolant by a porous ceramic insulator.
Chun K. Chow, Hussam F. Khartabil
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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source