Identification of Synergies for CFD Development of Fission and Fusion Reactors
Energy generation by nuclear systems is expected to play an important role to fullfill the demand for energy worldwide. Nuclear energy generation includes both energy generation by fission and by fusion. Although both communities are working in the same organizations, much of the research and development is performed separately, even if in some topics clearly existing or potential synergies have been identified. Thermal-hydraulics is recognized as one of the key scientific subjects of fission and fusion reactors. To solve thermal-hydraulic issues, Computational Fluid Dynamics (CFD) techniques are becoming more and more integrated in the daily practice of the thermal-hydraulics researchers and designers. This paper will identify, discuss and demonstrate various synergies of CFD support to the development of future fission and fusion reactors. Firstly, common issues will be identified and secondly, common development needs will be determined. These will be treated based on examples of applications like e.g. The common issues that can be found in the modeling of a liquid metal flow in sodium and lead cooled fast reactors and spallation targets like in the Megapie project for fission and in the International Fusion Materials Irradiation Facility (IFMIF) target and test modules or in tritium breeder designs for fusion. The working fluids (water, liquid metals, supercritical fluids, gases, and molten salts) used in the different reactors and related facilities already lead to obvious commonalities. Furthermore, common issues are found in cooling systems, heat exchangers, energy conversion systems, hydrogen production units, and free surface flows. These lead to possibilities of shared development of models and modeling approaches. Examples of shared developments for modeling approaches are: · Grid generation strategies · Assessment of thermal loads possibly leading to thermal fatigue · Turbulent heat transfer modeling approaches ·Free surface modeling approaches Examples of shared model developments are: · Turbulent heat transfer models · Multi-phase flow models ·Magneto-hydrodynamics ·Mass transfer modeling ·Coupling of CFD and thermo-mechanics (Finite Element Analysis) ·Coupling of CFD and thermo-mechanics for mechanical behaviour assessment (fatigue analysis) ·Numerical solver algorithms The identified synergies of issues and needs for development, show that fission and fusion communities can profit from each other if they are in close contact. This will enable them to avoid duplication of work, to share the resources, and to accelerate development of modeling approaches and models, validated on basic experiences, within the frame of benchmarks.
CFD Nuclear Fission Nuclear Fusion
Ferry Roelofs Christian Latgé
Westerduinweg 3, Petten, Netherlands CEA Cadarache, DEN-DTN 13108 Saint Paul lez Durance, France
国际会议
上海
英文
25-39
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）