Generalized Hydrodynamic Mass for Beam Mode Vibration of Cylinders Coupled by Fluid Gap

The generalized hydrodynamic mass for the free vibration of two coaxial cylindrical shells coupled by a narrow fluid gap is derived by following a procedure similar to that mentioned in [1]; the end conditions of the shells are arbitrary. The equations are applied to evaluate the generalized hydrodynamic mass for the coupled beam mode vibration of two cylinders. Numerical examples that can be compared with experimental data are given for two specific cases. In both cases, agreement between computed and measured values is excellent. It is intended that the results of this study will be applied to the vibration analysis of nuclear reactor internal components.