Results 51 to 60 of about 648 (179)

Improved Heat Transfer Capabilities of Nanofluids—An Assessment Through CFD Analysis

Chemical Engineering &Technology, Volume 47, Issue 11, November 2024.
Conventional fluids used in fission‐based water‐cooled nuclear reactors have lower heat transfer coefficients and thermal conductivity, prompting researchers to explore high‐performance fluids to enhance heat transfer and prevent core meltdown during accidents. It is crucial to investigate fluids that can improve thermal hydraulic characteristics, such
Rehan Zubair Khalid, Mehmood Iqbal, Aitazaz Hassan, Syed Muhammad Haris, Atta Ullah   +4 more
wiley   +1 more source

Fast Neutron Transport in the Biological Shielding Model and Other Regions of the VVER-1000 Mock-Up on the LR-0 Research Reactor

EPJ Web of Conferences, 2016
A set of benchmark experiments was carried out in the full scale VVER-1000 mock-up on the reactor LR-0 in order to validate neutron transport calculation methodologies and to perform the optimization of the shape and locations of neutron flux operation ...
Košťál Michal, Milčák Ján, Cvachovec František, Jánský Bohumil, Rypar Vojtěch, Juříček Vlastimil, Novák Evžen, Egorov Alexander, Zaritskiy and Sergey   +8 more
doaj   +1 more source

Exploring thermal flow dynamics in pressurized water reactors using hybrid graphene nanoplatelet coolants

Energy Science &Engineering, Volume 12, Issue 11, Page 4894-4903, November 2024.
Exploring thermal flow dynamics in pressurized water reactors using hybrid graphene nanoplatelet coolants. Abstract This study investigates the impact of hybrid nanoparticles on the temperature of nuclear reactor coolant, with a focus on graphene nanoplatelet (GNP)‐based hybrid nanoparticles. Sixteen different hybrid nanofluids were analyzed, and their
Sinem Uzun, Yasin Genç, Adem Acır
wiley   +1 more source

The choice of the fuel assembly for VVER-1000 in a closed fuel cycle based on REMIX-technology

EPJ Nuclear Sciences & Technologies, 2016
This paper shows basic features of different fuel assembly (FA) application for VVER-1000 in a closed fuel cycle based on REMIX-technology. This investigation shows how the change in the water–fuel ratio in the VVER FA affects on the fuel characteristics
Bobrov Evgenii, Alekseev Pavel, Chibinyaev Alexander, Teplov Pavel, Dudnikov Anatoliy   +4 more
doaj   +1 more source

Diagnostics of the critical heat flux state of a VVER reactor based on a channel steaming model [PDF]

Nuclear Energy and Technology, 2019
The purpose of the study is to develop a model for predicting the process of a critical heat flux state with the VVER reactor core channel steaming. The model describes the dynamics of the nuclear reactor behavior in conditions of uncertainty, which are ...
Svetlana A. Kachur
doaj   +3 more sources

Investigating the 17 March 2013 Geomagnetic Storm Impacts on the Wholly Coupled Solar Wind‐Magnetosphere‐Ionosphere‐Thermosphere System‐Of‐Systems

Journal of Geophysical Research: Space Physics, Volume 129, Issue 9, September 2024.
Abstract In this study, we investigate the impacts of the 17 March 2013 strong geomagnetic storm on the wholly coupled Solar Wind‐Magnetosphere‐Ionosphere‐Thermosphere system‐of‐systems. Obtained from multipoint observations, our new results show (1) the solar‐wind Alfven waves propagating antisunward in the sheath region and (2) oscillating solar wind
Ildiko Horvath, Brian C. Lovell
wiley   +1 more source

Vertical Crustal Deformation Due To Viscoelastic Earthquake Cycles at Subduction Zones: Implications for Nankai and Cascadia

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 8, August 2024.
Abstract Despite significant progress in studying subduction earthquake cycles, the vertical deformation is still not well understood. Here, we use a generic viscoelastic earthquake‐cycle model that has recently been validated by horizontal observations to explore the dynamics of vertical earthquake‐cycle deformation.
Shaoyang Li, Ling Chen
wiley   +1 more source

PMK-2, the First Integral Thermal-Hydraulics Tests for the Safety Evaluation of VVER-440/213 Nuclear Power Plants

Science and Technology of Nuclear Installations, 2012
The PMK-2 facility is a full-pressure thermal-hydraulic model of the primary and partly the secondary circuit of the VVER-type units of Paks NPP. The facility was the first integral-type facility for VVERs. The PMK-2 was followed later by the PACTEL (for
Gy. Ézsöl, L. Perneczky, L. Szabados, I. Tóth   +3 more
doaj   +1 more source

Enhancing Resilience through Nuclear Emergency Preparedness at El Dabaa Site

Science and Technology of Nuclear Installations, Volume 2024, Issue 1, 2024.
The research utilized advanced PCTRAN and RASCAL software to evaluate the potential radiological impacts of hypothetical accidents, specifically loss‐of‐coolant accident (LOCA) and long‐term station blackout (LTSBO), at the El Dabaa Nuclear Power Plant. Over a span of ten years, comprehensive meteorological data were meticulously analyzed to assess the
Waad Saleh, Juyoul Kim, Doddy Kastanya
wiley   +1 more source

Minor actinides transmutation in pressurized water reactors. 2. Using uranium and thorium fuel to burn minor actinides in a system with several VVER reactors [PDF]

Nuclear Energy and Technology
There is currently a consensus among the scientific and engineering community regarding the solution to the problem of minor actinides (MAs) formed in the process of nuclear power operation: MAs need to be converted to fission products during burnup in ...
Gleb W. Karpovich, Yuri A. Kazansky, Nikita D. Vasechkin, Kirill A. Bakhantsov   +3 more
doaj   +3 more sources