Dynamic response analysis of tube array in calandria to rotational vault motion

An efficient procedure has been presented for dynamic response analysis of horizontal tube array in partially filled calandria including hydrodynamic interaction effects (S.P. Joshi, A. Goyal. Dynamic response analysis of tube array in partially filled calandria. Earthquake Eng. Struct. Dyn. 28 (1999) 287-309). The procedure is general enough to consider transfer of energy between the fluid-coupled tubes and effects of moderator sloshing on the magnitude and the distribution of hydrodynamic forces. It can also simulate the added damping effects due to hydrodynamic interaction. In this paper, the procedure, originally developed for translational excitations of the calandria vault, is extended to include the rotational excitations of the vault. The procedure uses semi-analytical approach for the evaluation of hydrodynamic terms that leads to considerable economy in the computation.