Hui Sun

• Doctor of Philosophy
• Senior Researcher at Det Norske Veritas

Earlier investigations indicate that ship responses may significantly increase in steep sea states and a proper prediction of responses due to extreme waves is important for ship safety in extreme sea. The number of model tests investigating ship responses in rogue waves is limited today while the existing numerical codes predicting ship behavior i...

Slamming loads on a two-dimensional wedge elastically suspended on a marine structure are analyzed by using either a combined Wagner and von Karman method (W-vK) or a boundary element method (BEM). Fully nonlinear free surface conditions are satisfied in the BEM. Hydroelasticity effects are considered in both methods. A sinusoidal free surface moti...

Earlier investigations have indicated that proper prediction of non-linear response due to non-linear waves is important for ship safety in extreme seas. Nonlinearities may increase significantly ship response in steep sea-states. The topic has not been sufficiently investigated yet, particularly when rogue waves are considered. A question remains...

Earlier investigations have indicated that proper prediction of nonlinear loads and responses due to nonlinear waves is important for ship safety in extreme seas. However, the nonlinear loads and responses in extreme seas have not been sufficiently investigated yet, particularly when rogue waves are considered. A question remains whether the existi...

An efficient Monte Carlo method is developed to perform the stochastic analysis of slamming loads on marine structures. The probability distribution of the maximum impact force during slamming is established for a given stationary sea state. The method is demonstrated by using a uniform wedge and Wagner’s flat plate theory. Stochastic effects relat...

The inception of porpoising instability can be predicted by a linear stability analysis. However, the hydrodynamic coefficients, i.e. the added mass and damping coefficients as well as restoring force coefficients, in heave and pitch need to be known in advance. In this paper, these coefficients are calculated by using a 2D+t theory and a Boundary...

Efficient and accurate estimation of mat-like VLFS's hydroelastic responses in waves is very important for the design. Within the category of simplified methods, the beam on elastic foundation (BOEF) model seems to be the simplest. A comparative study is carried out to four BOEF models. They are denoted as S_Y_BOEF, T_BOEF, S_BOEF and A_BOEF models...

Very large floating structures (VLFS) have an extremely large size of several kilometers in length, thus, the environment at one end of the platform may be different from that at the other end. The importance of such an inhomogeneous environment to the hydroelastic response of a VLFS is of obvious concern for practical application. Some studies hav...

Variable bottom is a typical example of the inhomogeneous environment. The influence of the variable bottom on the hydroelastic response of very large floating structures (VLFSs) was illustrated by three specific examples with bottoms in three different shapes, i.e. a plane slope, an ellipse-shaped bar and a patch of periodic ripple. Linear long wa...

An eigen-function expansion method based on a new orthogonal inner product is proposed by Sahoo et al. (2000) for the study of the hydroelastic response of mat-type VLFS in head seas. However, their main emphasis is on the effect of edge conditions and they assume that the plate is of a semi-infinite length. In reality, the plate is of finite lengt...