Control Signal Optimization For Non-Linear Wave Generation

This paper investigates the use of optimization for numerical-physical wave generation in wave tanks. Control signals for a wedge-shaped plunger-type wave generator are developed to produce stable non-linear, deep-water waves in both numerical and physical wave tanks. A fully non-linear potential flow solver developed at DTU is used for the numerical work. Numerical optimization proceeds by a defect correction scheme, resulting in optimized control signals for wavelengths of 0.7-2 in (corresponding to non-dimensional wave numbers kh = 2 - 5.5) and steepnesses of 3-11%.