Multi-dimensional arbitrary Lagrangian-Eulerian method for dynamic fluid-structure interaction
A description is given of an arbitrary Lagrangian-Eulerian method for analyzing fluid-structure interactions in fast reactor containment with complex internal structures. In the analysis, the fluid transient can be calculated either implicitly or explicitly, using a finite-difference mesh with vertices that may be moved with the fluid (Lagrangian), held fixed (Eulerian), or moved in any other prescribed manner (hybrid Lagrangian-Eulerian). The structural response is computed explicitly by two nonlinear, elastic-plastic finite element modules formulated in corotational coordinates. Interaction between fluid and structure is accounted for by enforcing the interface boundary conditions. The method has convincing advantages in treating complicated phenomena such as flow through perforated structures, large material distortions, flow around corners and irregularities, and highly contorted fluid boundaries. Several sample problems are given to illustrate the effectiveness of this arbitrary Lagrangian-Eulerian method. 12 refs.
- Research Organization:
- Argonne Natl Lab, IL, USA
- OSTI ID:
- 6458876
- Report Number(s):
- CONF-820601-
- Journal Information:
- Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States), Journal Name: Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States) Vol. 64; ISSN AMPPD
- Country of Publication:
- United States
- Language:
- English
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A CODES
ACCIDENTS
BREEDER REACTORS
CALCULATION METHODS
COMPUTER CODES
CONTAINMENT
CONTAINMENT SYSTEMS
DIFFERENTIAL EQUATIONS
ENGINEERED SAFETY SYSTEMS
EPITHERMAL REACTORS
EQUATIONS
EQUATIONS OF MOTION
FAST REACTORS
FBR TYPE REACTORS
FINITE DIFFERENCE METHOD
FLUID FLOW
FUNCTIONS
I CODES
ITERATIVE METHODS
LAGRANGIAN FUNCTION
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
REACTOR ACCIDENTS
REACTOR CORE DISRUPTION
REACTORS
TRANSIENTS