Dr. Hitoshi Gotoh is a professor of Civil Engineering at Kyoto University, where he received a Ph.D. degree in Civil Engineering. He is the chair of Urban Coast Design Laboratory (Coastal Engineering) in the Department of Civil and Earth Resources Engineering at Kyoto University. His areas of expertise include computational wave dynamics, computational mechanics of sediment transport, modeling of multi-phase flows, and turbulent flows. For more than 20 years, he has led research studies of Lagrangian particle method, solving incompressible fluid flow with violent free-surface motion. His research team has developed many methods to enhance the accuracy of Lagrangian computations of free-surface flow, some of which play key roles in the numerical wave flume. He won Coastal Engineering Journal Awards in 2005, 2008, and 2011. From 2019 to 2021, he had served as the chair of the Coastal Engineering Committee of the Japan Society of Civil Engineers. Dr. Abbas Khayyer is an associate professor of Civil Engineering at Kyoto University, where he received his Ph.D. degree in 2008. Since then, he has been active in conducting research in the fields of computational fluid dynamics and fluid–structure interactions, developing advanced technology in both fields within the context of particle methods. Dr. Khayyer won the C. H. Kim Award in 2018 from the International Society of Offshore and Polar Engineers (ISOPE), which is awarded annually to one researcher who has made a remarkable contribution to ocean engineering. He acts as a steering and scientific committee member of the SPH rEsearch and engineeRing International Community (SPHERIC), is an associate editor of Applied Ocean Research, Coastal Engineering Journal and International Journal of Offshore and Polar Engineering, and an editorial board member of Ocean Engineering.