Quasi-Eulerian formulation for fluid-structure interaction
In this paper, recent developments of a quasi-Eulerian finite element formulation for the treatment of the fluid in fluid-structure interaction problems are described. The present formulation is applicable both to plane two-dimensional and axisymmetric three-dimensional problems. In order to reduce the noise associated with the convection terms, an amplification factor technique is used to implement an up-winding type scheme. The application of the method is illustrated in two problems which are of importance in nuclear reactor safety: (1) a two dimensional model of a cross section of a subassembly configuration, where the quasi-Eulerian formulation is used to model the fluid adjacent to the structures and in the channel between the subassemblies; (2) pressure transients in a straight pipe, where the axisymmetric formulation is used to model the fluid in the pipe. These results are compared to experimental results for these problems and compare quite well.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5853812
- Report Number(s):
- CONF-790802-66
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220900* -- Nuclear Reactor Technology-- Reactor Safety
COOLING SYSTEMS
FINITE ELEMENT METHOD
FLUID MECHANICS
FUEL ASSEMBLIES
FUEL ELEMENT CLUSTERS
HYDRAULICS
MATHEMATICAL MODELS
MECHANICS
NUMERICAL SOLUTION
PRESSURE GRADIENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
STRAINS
STRESS ANALYSIS
TWO-DIMENSIONAL CALCULATIONS