Description: This paper describes a reactor containment code, ALICE (Arbitrary Lagrangian-Eulerian Implicit-Explicit Containment Excursion code), which uses a hybrid Lagrangian-Eulerian finite-difference method for the treatment of the coolant motions and a Lagrangian finite-element technique for the analysis of the containment vessel and other solid media inside a reactor containment. The advantages of the ALICE code over the conventional Lagrangian or Eulerian method are: (1) the interpolations of the fluid and structural motions can be made very accurate as the cell vertices of the fluid adjacent to the structure moving with the structural nodal points; (2) the cells for the fluid calculation can be made in any quadrilateral shape corresponding to the perforated passageways or the structural deformation to avoid irregular-cell calculations; (3) inlet and outlet boundary conditions can be easily treated; (4) long-duration calculations can be achieved by rezoning the large distortion regions; and (5) a pure Lagrangian approach can be applied to those small distortion regions to treat flow problems with many materials. Two examples are given to illustrate the application of the ALICE code. The first one is a shock tube test in which an initial discontinuity of pressure and density is calculated. The second one is a SRI flexible-vessel test specially designed for the containment code validation. Results are discussed in detail.
Date: January 1, 1979
Creator: Chu, H.Y.
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