Numerical Generation of Solitary Wave and Its Propagation Characteristics in a Step-Type Flume

This work concerns the numerical generation of stable solitary waves by using a piston-type wave maker and propagation characteristics in step-type flume. The was performed solving N-S (Navier–Stokes) equations on open source CFD (computational fluid dynamics) platform OpenFOAM. To this end, new module dynamic boundary conditions programmed can be applied to prescribe horizontal linear motion paddle. Two kinds paddle motions, based both first-order ninth-order solutions waves, were first determined. time history restored file, which then used as an input for virtual maker. water with constant depth generated simulation experiment flume installed piston results show that amplitudes trailing solution are larger than those height decays more quickly. profiles good agreement experimental ones. numerically investigated well. It found part is reflected when passes step due blockage effects, forward main collapses quickly it enters shallow water. presents very successful study reveals phenomena propagates