Performance Assessment of a Planing Hull Using the Smoothed Particle Hydrodynamics Method

Abstract

Computational Fluid Dynamics simulations of planing hulls are generally considered less reliable than simulations of displacement hulls. This is due to the flow complexity around planing hulls, especially in the bow region, where the sprays are formed. The recent and constant increasing of computational capabilities allows simulating planing hull features, with more accurate turbulence models and advanced meshing procedures. However, mesh-based approaches based on the finite volume methods have shown to be limited in capturing all the phenomena around a planing hull. As such, the focus of this study is on evaluating the ability of the Smoothed Particle Hydrodynamics mesh-less method to numerically solve the 3-D flow around a planing hull and simulate more accurately the spray structures, which is a rather challenging task to be performed with mesh-based tools. A novel application of the DualSPHysics code for simulating a planing hull resistance test has been proposed and applied to the parent hull of the Naples warped planing hull Systematic Series. The drag and the running attitudes (heave and dynamic trim angle) are computed for a wide range of Froude’s numbers and discussed concerning experimental values.

Numerical Investigation on the Motion of a High-Speed Planning Hull in Calm Water Condition using RANSE Method

“…The finite volume method (FVM) is the most commonly used discretization approach for analysing the hydrodynamic performance of high-speed planning hulls [2]. Studies have shown that the use of unsteady RANSE with the VOF method and FVM, is an effective approach for predicting the hydrodynamic performance of planing vessels [3]. Typically, the spatial discretization is performed using a single mesh, with local refinements in areas of separation and the free surface to accommodate for substantial grid deformations [4,5].…”

Research on oil boom performance based on Smoothed Particle Hydrodynamics method

“…In this study, a fluid-solid interaction model was established, focusing on the undulation of oil booms under the influence of waves [12]. To achieve singularity of variables, a coupled model of Smoothed Particle Hydrodynamics (SPH) and Chrono was designed to restrict the motion of oil booms in the X and Y axes, thus providing a more accurate simulation of the undulation effect of oil booms [11,13]. In order to realistically reflect turbulence phenomena, an improved Sub-Particle Scale (SPS) turbulence model was adopted, which has higher accuracy and reliability in predicting vortex structures and flow characteristics [14,15].…”

Stern Flap Application on Planing Hulls to Improve Resistance

“…Technology development in numerical analysis has been one factor that encourages researchers to conduct numerical analysis-based studies. Numerical analysis of planing hull ships is considered less accurate than displacement hulls [10]. There are methods used in numerical analysis, such as Finite Volume Method (FVM), Finite Element Method (FEM), Finite Difference Method (FDM), and analytic-experiment [11].…”