Higher Harmonics Induced by Dual-Submerged Structures

Abstract

ABSTRACT Ning, D.-z.; Li, Q.-x.; Chen, L.-f.; Zhao, M., and Teng, B., 2017. Higher harmonics induced by dual-submerged structures. Various types of submerged multibody systems are being inserted into and being devised in the real sea. Nonlinear diffraction of regular waves attributable to dual-submerged cylinders and boxes is investigated both experimentally and numerically in this study. The ultimate objective of the study is to provide best practice guidelines for the engineers in the field leading to the better design of the submerged structures with better hydrodynamic performance and higher survival characteristics. A two-dimensional fully nonlinear numerical wave flume based on a time-domain higher order boundary element method is used, and the comparisons between the numerical and experimental results are carried out for cross-checking both the numerical model and physical experiments. The influence of the submergence, gap distance, size, and geometric shape of the two submerged structures on the h...