Seiche oscillations in a rectangular channel with an abrupt expansion of the cross section

Abstract

The natural frequencies and modes of seiche oscillations in a closed water reservoir consisting of a long narrow channel connected to a wide basin were investigated theoretically and experimentally. Calculations were made using linear shallow-water theory in two-dimensional and one-dimensional formulations. The spectral properties of free-surface oscillations at points lying on the nodal lines of the first four modes of seiche oscillations were studied experimentally. The one-dimensional model adequately predicts lower-mode frequencies, but the data on the positions of the nodal points of seiche oscillations obtained using this model are somewhat different from those obtained experimentally and using the two-dimensional model.

Numerical study of transient harbor resonance induced by solitary waves

“…Over the last two decades, many researchers further studied the various aspects of the steady harbor resonance using different methods. 7,15–21…”

Investigation of Seiche Oscillations in a Free Entrance Bay

“…Experiments show that it is important to take into account two-dimensionality of wave process. Thus, in [13] free waves are studied in a closed rectangular channel of variable cross-section using a laboratory experiment and numerical calculations. It is determined that one-dimensional model provides satisfactory description of the seiche oscillation frequencies.…”