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| Author | : Alexander Vorobyev |
| Publisher | : |
| Total Pages | : |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
| Author | : Alexander Vorobyev |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 144 |
| Release | : 2014-07-31 |
| Genre | : Science |
| ISBN | : 3866449534 |
The Smoothed Particle Hydrodynamics (SPH) method is proposed for studying hydrodynamic processes related to nuclear engineering problems. A problem of possible recriticality due to the sloshing motions of the molten reactor core is studied with SPH method. The accuracy of the numerical solution obtained in this study with the SPH method is significantly higher than that obtained with the SIMMER-III/IV reactor safety analysis code.
| Author | : Mashy David Green |
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| Total Pages | : |
| Release | : 2016 |
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| Author | : Songbai Cheng |
| Publisher | : Springer Nature |
| Total Pages | : 313 |
| Release | : 2021-09-27 |
| Genre | : Science |
| ISBN | : 9811661162 |
This book highlights the advances and trends in the safety analysis of sodium-cooled fast reactors, especially from the perspective of particle bed-related phenomena during core disruptive accidents. A sodium-cooled fast reactor (SFR) is an optimized candidate of the next-generation nuclear reactor systems. Its safety is a critical issue during its R&D process. The book elaborates on research progresses in particle bed-related phenomena in terms of the molten-pool mobility, the molten-pool sloshing motion, the debris bed formation behavior, and the debris bed self-leveling behavior. The book serves as a good reference for researchers, professionals, and postgraduate students interested in sodium-cooled fast reactors. Knowledge provided is also useful for those who are engaging in severe accident analysis for lead-cooled fast reactors and light water reactors.
| Author | : Songbai Cheng |
| Publisher | : Frontiers Media SA |
| Total Pages | : 244 |
| Release | : 2023-03-03 |
| Genre | : Technology & Engineering |
| ISBN | : 2832516769 |
| Author | : Wookey Lee |
| Publisher | : Springer |
| Total Pages | : 214 |
| Release | : 2018-08-16 |
| Genre | : Technology & Engineering |
| ISBN | : 9811306958 |
This proceedings volume contains selected papers from the Fourth International Conference on Big Data Applications and Services (BigDAS 2017), held in Tashkent, Uzbekistan on August 15-18, 2017. Big data has become a core technology providing innovative solutions in many fields including social media, healthcare and manufacturing. The Fourth International Conference on Big Data Applications and Services (BigDAS 2017) presented innovative results, encouraged academic and industrial interaction, and promoted collaborative research in the field of big data worldwide. The conference was organized by the Korea Big Data Services Society and National University of Uzbekistan.
| Author | : Kristopher S. Field |
| Publisher | : |
| Total Pages | : 136 |
| Release | : 2014 |
| Genre | : Sloshing (Hydrodynamics) |
| ISBN | : |
"The purpose of the research described here is to study the implementation of Smoothed Particle Hydrodynamics (SPH) algorithms as an adequate means for propellant slosh simulations in 1g and 0g environments. The dualSPHysics solver has been adapted for propellant slosh simulations. Simulated sloshing liquid frequency and damping ratio data for 1g cases has been compared to existing experiments for both spherical and prismatic container geometries. The 0g case has been studied to determine what further modifications would be required to obtain realistic simulations results. The findings in this research will be used to create a sloshing simulation to determine torques applied to a cubesat during opeations"--Abstract.
| Author | : Wenxi Tian |
| Publisher | : Frontiers Media SA |
| Total Pages | : 219 |
| Release | : 2023-08-21 |
| Genre | : Technology & Engineering |
| ISBN | : 2832533264 |
High fidelity nuclear reactor thermal hydraulic simulations are a hot research topic in the development of nuclear engineering technology. The three-dimensional Computational Fluid Dynamics (CFD) and Computational Multi-phase Fluid Dynamics (CMFD) methods have attracted significant attention in predicting single-phase and multi-phase flows under steady-state or transient scenarios in the field of nuclear reactor engineering. Compared with three-dimensional thermal hydraulic methods, the traditional one-dimensional system analysis method contains inherent defects in the required accuracy and spatial resolution for a number of important nuclear reactor thermal-hydraulic phenomena. At present the CFD method has been widely adopted in the nuclear industry, across both light water reactors and liquid metal cooled fast reactors, providing an effective solution for complex issues of thermal hydraulic analysis. However, the CFD method employs empirical models for turbulence simulation, heat transfer, multi-phase interaction and chemical reactions. Such models must be validated before they can be used with confidence in nuclear reactor applications. In addition, user practice guidelines play a critical role in achieving reliable results from CFD simulations.
| Author | : Xiangda Cui |
| Publisher | : |
| Total Pages | : |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
In this thesis, a numerical program based on an improved smoothed particle hydrodynamics (SPH) method has been developed to solve the nonlinear fluid-structure interaction problems. The program simulates breaking free-surface flows and evaluates the global and local hydrodynamic loads on structures. In the present SPH method, the fluid domain is discretized into fluid particles which allows the Euler equation to be numerically solved. A kernel function is employed to interpolate the flow field and the approximate Euler equations explicitly. The solid boundaries are modelled using a fixed ghost particle method. A diffusive term was adopted to smooth the noise in the pressure field. A particle shift technique was adopted and improved by introducing a layer of background particles along the free surface to minimize the interpolation error caused by the anisotropic particle distribution. Validation studies were carried out in three two-dimensional cases including dambreak flow impacting against a vertical wall, water entry of a free-fall wedge, and sloshing flow in a rectangular container excited by roll motions. The numerical results were compared with the experimental results and other published numerical solutions.
| Author | : |
| Publisher | : |
| Total Pages | : 11 |
| Release | : 1990 |
| Genre | : |
| ISBN | : |
The smoothed particle hydrodynamics method has been used to simulate several cases of hypervelocity impact. The calculations compare favorably with experimental results and with other numerical simulations. 12 refs., 6 figs.
