Experimental study on the resistance characteristics of the rod bundle channel with spacer grid under low-frequency pulsating flows
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2019.03.027
Abstract: Abstract The spacer grid is widely used with the fuel rod buddle to stabilize the fuel assembly structure and reduce the vibration effect in the pressurized water reactor (PWR). To study the flow resistance characteristics… read more here.
Keywords: cycle; flow resistance; study; spacer grid ... See more keywords
CFD analyses of mixed and forced convection in a heated vertical rod bundle
Sign Up to like & getrecommendations! Published in 2017 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2017.02.020
Abstract: Abstract The effects of spacer grid blockage ratio and spacer grid spacing on heat transfer in a vertical rod bundle are presented in this study. A 3-D model of a 1/8th cross-section of a subchannel… read more here.
Keywords: rod bundle; spacer grid; vertical rod;
Numerical investigation of flow and heat transfer characteristics of subcooled boiling in a single rod channel with/without spacer grid
Sign Up to like & getrecommendations! Published in 2020 at "Case Studies in Thermal Engineering"
DOI: 10.1016/j.csite.2020.100644
Abstract: Abstract A multiphase flow numerical model based on Eulerian is built to simulate the characteristics of subcooled boiling. The thermodynamic performance in a single rod channel with/without spacer grid are obtained by numerical simulation, and… read more here.
Keywords: spacer; characteristics subcooled; spacer grid; heat ... See more keywords
Evaluation and development of heat transfer model for supercritical water flowing in 2 × 2 rod bundles with spacer grid
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2020.120702
Abstract: Abstract Supercritical water has excellent heat transfer abilities that allows higher power density and smaller structure in power plants. However, due to the large variation of the fluid thermal-physical properties near pseudo-critical point, heat transfer… read more here.
Keywords: heat; supercritical water; spacer grid; heat transfer ... See more keywords
Subchannel analysis of thermal-hydraulic performance in rod bundle with spacer grid considering anisotropic turbulent mixing
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2021.107039
Abstract: Abstract Combined with the relationship between the time averaged parameters of flow field and the inter-subchannel transverse turbulent mixing velocity, a method for solving the mixing velocity between adjacent subchannels is presented in this paper.… read more here.
Keywords: rod bundle; turbulent mixing; rod; spacer grid ... See more keywords
Mechanical robustness of AREVA NP's GAIA fuel design under seismic and LOCA excitations
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Engineering and Technology"
DOI: 10.1016/j.net.2018.01.001
Abstract: Abstract Recent events in the nuclear industry have resulted in a movement towards increased seismic and LOCA excitations and requirements that challenge current fuel designs. AREVA NP's GAIA fuel design introduces unique and robust characteristics… read more here.
Keywords: seismic loca; gaia; fuel; spacer grid ... See more keywords
Comparative study of the contribution of various PWR spacer grid components to hydrodynamic and wall pressure characteristics
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2017.03.011
Abstract: Abstract Flow-induced vibrations in a pressurized water reactor (PWR) core can cause fretting wear in fuel rods. These vibrations can compromise safety of a nuclear reactor. So, it is necessary to know the random fluctuating… read more here.
Keywords: spacer; pressure characteristics; hydrodynamic wall; spacer grid ... See more keywords
Development of a new spacer grid pressure drop model in rod bundle for the post-dryout two-phase flow regime during reflood transients
Sign Up to like & getrecommendations! Published in 2020 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2020.110815
Abstract: Abstract Flow blockages such as the spacer grids play an important role in a two-phase flow system as they modify the flow and heat transfer behavior. Their existence, on the one hand, increase the turbulent… read more here.
Keywords: two phase; flow; phase flow; spacer grid ... See more keywords
Visualization of spacer grid effect on bubble behavior and CHF in a single-rod channel
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2021.111376
Abstract: Abstract The effect of spacer grids on bubble behavior and critical heat flux (CHF) has been investigated through visualization of a heated single-rod channel cooled with refrigerant R-134a over a wide range of conditions. The… read more here.
Keywords: chf; rod; spacer grid; effect ... See more keywords
Implementation of a Spacer Grid Rod Thermal-Hydraulic Reconstruction (ROTHCON) Capability into the Thermal-Hydraulic Subchannel Code CTF
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Technology"
DOI: 10.1080/00295450.2019.1585734
Abstract: Abstract The Consortium for Advanced Simulation of Light Water Reactors is developing a core simulator capability known as the Virtual Environment for Reactor Applications (VERA) to address nuclear industry challenge problems such as crud-induced power… read more here.
Keywords: ctf; thermal hydraulic; capability; hydraulic subchannel ... See more keywords