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Memorias de investigación
Communications at congresses:
Sloshing Effects in LFR Systems
Year:2013
Research Areas
  • Mechanical engineering,
  • Civil engineering
Information
Abstract
The effect of sloshing in the LFR reactor vessel supported on seismic isolators is being studied. The approach is to develop and compare the results with three different methodologies. In the first approach, a detailed model has been developed using FLUENT. The methodology is CFD (Computational Fluid Dynamics). The work includes the development of a detailed 3D model for interior surfaces of the reactor vessel in order to define, in as much detail as possible, the volume of the coolant and circulation ways of the fluid. The object is to obtain the evolution of the free surfaces of molten lead in the complex 3D model of the vessel with internals and, additionally, pressure time histories at different internal surfaces. These results will allow for the examination of the structural capability of different metallic elements associated with the vessel and its internal components. A second approach is being using which is based on ABAQUS and ALE methodology (Arbitrary Lagrangian Eulerian). The objective of this work is to obtain the same results, as with FLUENT. However, ABAQUS allows the study of the fluid structure interaction within the same computational model, which is one of the objectives. In a third approach, the same simulation has been performed by a modern Lagrangian numerical method called SPH (Smoothed Particle Hydrodynamics). The weakly compressible version of the SPH methodology uses a discrete form of the mass and momentum conservation equations along with an equation of state linking the density and pressure fields. A specific code has been developed in order to calculate the pressure and velocity fields of the fluid running on GPU (graphic process unit) cards, giving a highly efficient parallel computation. In all cases, models have been processed with the accelerograms associated with a reactor building model supported on a system of seismic isolators. All these results are included in a comparative study in order to identify significant variables, values and critical methodologies.
International
Si
Congress
SILER Workshop 2013
960
Place
Reviewers
Si
ISBN/ISSN
00000000
Start Date
18/06/2013
End Date
19/06/2013
From page
1
To page
12
Proceedings of SILER Workshop 2013
Participants
  • Autor: G. Barrera (CIEMAT)
  • Autor: Pasquale Dinoi . (UPM)
  • Autor: Jose Luis Cercos Pita (UPM)
  • Autor: Leo Miguel Gonzalez Gutierrez (UPM)
  • Autor: A. Guerrero (IDOM)
  • Autor: F. Beltrán (IDOM)
  • Autor: A. Moreno (IDOM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Ciencias Aplicadas a la Ingeniería Naval
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