抄録
A method for making irregular waves in numerical simulation by a linear wave theory is simple and of great utility in a practical work. It is necessary to modify a horizontal velocity profile, because a total mass of calculated region increases with time by a mass transport. Although several studies have been made on modifying a horizontal velocity in the last few years, it leaves much room for improvement. We also have proposed a method for modifying a horizontal velocity that subtract Stokes drift. In the present study, an improved method for generating irregular waves is proposed. The purpose of this paper is to investigate the validity of the modified method. In the result, the modified method is applicable to a calculation of irregular waves.