Numerical Investigation of Fluid Energy Evolution Under the Wave-Induced Gap Resonance Between Stationary Floating Rectangular Structures
摘要
This study quantitatively examined the fluid energy evolution and dissipation process near narrow gaps formed between multiple floating rectangular structures under wave-induced gap resonance conditions. Given the limited understanding of gap resonance mechanisms through fluid energy analysis, a numerical wave flume based on the δ-LES-Smoothed Particle Hydrodynamics (SPH) approach was developed to investigate how incident wave and structural parameters influence the temporal evolution of fluid energy components. The findings reveal that for two floating boxes, the fluid energy dissipation within one wave period in the gap region between the boxes constitutes 81% of the total fluid energy dissipation in the fluid domain. This proportion remains consistent across varying incident wave heights under gap resonance conditions. The temporal distribution of fluid energy dissipation rate shows two peak values within one wave period, exhibiting significant waveform asymmetry. Additionally, in three-box configurations, the two narrow gap regions serve as primary zones of fluid energy dissipation, with energy dissipation patterns closely resembling those observed in the single gap region. Through comprehensive analysis of fluid energy evolution, this research advances the fundamental understanding of gap resonance mechanisms.