Algorithmic Design of an FPGA-Based Calculator for Fast Evaluation of Tsunami Wave Danger

Events of a seismic nature followed by catastrophic floods caused tsunami waves (the incidence which has increased in recent decades) have an important impact on the populations littoral regions. On coast Japan and Kamchatka, it takes nearly 20 min for to approach nearest dry land after offshore event. This paper addresses question fast simulation wave propagation mapping algorithms use field-programmable gate arrays (FPGAs) with help high-level synthesis (HLS). Wave is described shallow water system, numerical treatment MacCormack scheme used. The algorithm direct difference at three-point stencil “cross” type; happens be appropriate FPGA-based parallel implementation. A specialized calculator was designed. developed software tested precision performance. Numerical tests computing fronts show very good agreement available exact solutions (for two particular cases sea bed topography) reference code. As result, just 17.06 s simulate 1600 (3200 time steps) using 3000 × 3200 computation grid VC709 board. step length computational chosen display results sufficient detail along coastline. At same time, size data should provide their free placement memory FPGA chips. rather high performance achieved shows that danger could correctly evaluated few minutes events.