A review of sub-channel thermal hydraulic codes for nuclear reactor core and future directions
Thermal hydraulic analysis of nuclear reactor core is mainly performed using the sub-
channel analysis codes to estimate different thermal hydraulic safety margins. The safety …
channel analysis codes to estimate different thermal hydraulic safety margins. The safety …
From discovery to recognition of periodic large scale vortices in rod bundles as source of natural mixing between subchannels—a review
L Meyer - Nuclear Engineering and Design, 2010 - Elsevier
The mixing of cooling fluid in rod bundles from one subchannel to another through the gaps
between the rods reduces the temperature differences in the coolant as well as along the …
between the rods reduces the temperature differences in the coolant as well as along the …
Numerical simulation of flows in tight-lattice fuel bundles
E Merzari, H Ninokata, E Baglietto - Nuclear Engineering and Design, 2008 - Elsevier
The flow in tight rod bundles is characterized by long-term, large-scale coherent patterns in
the stream-wise direction. In the present work, the issue of simulating these structures …
the stream-wise direction. In the present work, the issue of simulating these structures …
Direct numerical simulation of fluid flow in a 5x5 square rod bundle
Abstract Characterization of parallel flow through rod bundles is of key importance in
assessing the performance and safety of several engineering systems, including a majority …
assessing the performance and safety of several engineering systems, including a majority …
Periodic large-scale structural characteristics of two-phase flow in tight lattice bundles
X Yan, Y Xiao, H Zhang, H Gu - International Journal of Heat and Mass …, 2023 - Elsevier
This paper investigated the two-phase flow characteristics in a double sub-channel tight
lattice (P/D= 1.06). Compared to the prototype, the test channel was magnified by 2.7 times …
lattice (P/D= 1.06). Compared to the prototype, the test channel was magnified by 2.7 times …
Simulations of turbulence, heat transfer and mixing across narrow gaps between rod-bundle subchannels
D Chang, S Tavoularis - Nuclear Engineering and Design, 2008 - Elsevier
Turbulent flow and temperature fields were determined numerically in a rectangular duct
containing a heated rod. As the spacing δ between the rod and the duct wall decreased from …
containing a heated rod. As the spacing δ between the rod and the duct wall decreased from …
Analysis of low Reynolds number turbulent flow phenomena in nuclear fuel pin subassemblies of tight lattice configuration
This paper focuses on the numerical simulation of low Reynolds (Re) number turbulence
flow phenomena in tightly packed fuel pin subassemblies and in channels of irregular shape …
flow phenomena in tightly packed fuel pin subassemblies and in channels of irregular shape …
Experimental investigation of flow development and gap vortex street in an eccentric annular channel. Part 1. Overview of the flow structure
GH Choueiri, S Tavoularis - Journal of fluid mechanics, 2014 - cambridge.org
Flow visualization, laser Doppler velocimetry and planar and stereoscopic particle image
velocimetry were used to investigate the isothermal velocity field along an eccentric annular …
velocimetry were used to investigate the isothermal velocity field along an eccentric annular …
Proper orthogonal decomposition of the flow in a tight lattice rod-bundle
E Merzari, H Ninokata - Nuclear engineering and design, 2011 - Elsevier
Axial coolant flow inside a tightly packed rod bundle presents a complex behavior;
experimental analysis had clearly shown that when reducing the pitch-to-diameter ratio …
experimental analysis had clearly shown that when reducing the pitch-to-diameter ratio …
Biglobal linear stability analysis for the flow in eccentric annular channels and a related geometry
Recently, it has been observed that simple geometry characterized by a low level of
symmetry present interesting peculiarities in the process of transition from laminar Poiseuille …
symmetry present interesting peculiarities in the process of transition from laminar Poiseuille …