Results 1 to 10 of about 777,065 (243)
Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid [PDF]
Frontiers 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
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Case Studies in Thermal Engineering, 2022 In this study, a numerical model of two-phase flow boiling in a rod bundle channel was developed to investigate the influence of spacer grid's arrangement on thermal-hydraulic characteristics and critical heat flux (CHF).
Xusheng Wang, Yingwen Liu
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Case Studies in Thermal Engineering, 2020 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 the influence of ...
Ting Zhang, YingWen Liu
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Energies, 2020 Experimental investigations on the heat transfer performance of supercritical water flowing in the subchannel of supercritical water-cooled reactor (SCWR) simulated by a triangular channel were conducted at pressures of 23−28 MPa, mass flow rates ...
Weishu Wang +4 more
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A Study of Neutronics Effects of the Spacer Grids in a Typical PWR via Monte Carlo Calculation
Nuclear Engineering and Technology, 2016 Spacer grids play an important role in maintaining the proper form of the fuel assembly structure and ensuring the safety of reactor core design. This study applies the Monte Carlo method to the analysis of the neutronics effects of spacer grids in a ...
Xuan Bach Tran, Nam Zin Cho
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Journal of Radiation Research and Applied Sciences, 2022 One of the principal issues in the phase change heat transfer at the vertical channel that changes the vapour fraction in the two-phase system is the presence of a grid spacer which prompts the temperature and velocity jump.
Mohammad Yaghoub Abdollahzadeh Jamalabadi +1 more
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Numerical simulation to study mixing vane spacer effects on heat transfer performance of supercritic
Journal 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
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5X5 Rod Bundle Flow Field Measurements Downstream a PWR Spacer Grid
Brazilian Journal of Radiation Sciences, 2020 The spacer grids are structures present in nuclear fuel assembly of Pressurized Water Reactors (PWR). They play an important structural role and also assist in heat removal through the assembly by promoting increased turbulence of the flow. Understanding
Higor Fabiano Pereira de Castro +3 more
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Motion of Small Bubbles near a Grid Spacer in a Two by Three Rod Bundle
Journal of Fluid Science and Technology, 2008 Motion of small bubbles upstream of a grid spacer in a two by three rod bundle is experimentally investigated. Trajectories of single bubbles upstream of the grid spacer are recorded by using a high-speed video camera. An image processing method based on
Zheng ZHANG +3 more
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Mechanical robustness of AREVA NP's GAIA fuel design under seismic and LOCA excitations
Nuclear Engineering and Technology, 2018 Recent events in the nuclear industry have resulted in a movement towards increased seismic and LOCA excitations and requirements that challenge current fuel designs.
Brian Painter +4 more
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