Numerical modeling of fluid resonance in narrow gaps of fixed rectangular structures

摘要

A two-dimensional numerical model is developed to investigate the phenomenon of resonance in narrow gaps. Insteadof using commonly used Volume of Fluid method to capture the free surface which is sometimes difficult to capture thegeometric properties of the geometrically complicated interface, the free surface is traced by using ArbitraryLagrangian–Eulerian method. The numerical model is based on the two-dimensional Reynolds-Averaged Navier–Stokesequations. The numerical model is validated against wave propagation in wave flume. Comparisons between the numerical results and available theoretical data show satisfactory agreements. Fluid resonance in narrow gaps of fixed rectangular structures are simulated. Numerical results show that resonance wave height and wave frequency for rectangleboxes with sphenoid corners is larger than for rectangle boxes.