Added mass of submerged perforated tubes

There have been many studies on the added mass of submerged vibrating objec ts for common geometrical configurations of structures used in practice. Ho wever, adequate study has not been reported on the mass of surrounding flui d to be added to the vibrating perforated tubes which are common in nuclear reactors. Such a study is presented here based on the experiments conducte d on a few of perforated tubes and an empirical formulation is suggested fo r the added mass which could be useful for undertaking structural dynamics evaluation at design stage. (C) 1999 Elsevier Science S.A. All rights reser ved.