CFD Simulation of Ship Seakeeping Performance and Slamming Loads in Bi-Directional Cross Wave

Abstract

Accurate prediction of ship seakeeping performance in complex ocean environment is a fundamental requirement for ship design and actual operation in seaways. In this paper, an unsteady Reynolds-averaged Navier–Stokes (RANS) computational fluid dynamics (CFD) solver with overset grid technique was applied to estimate the seakeeping performance of an S175 containership operating in bi-directional cross waves. The cross wave is reproduced by linear superposition of two orthogonal regular waves in a rectangle numerical wave tank. The ship nonlinear motion responses, bow slamming loads, and green water on deck induced by cross wave with different control parameters such as wave length and wave heading angle are systemically analyzed. The results demonstrate that both vertical and transverse motion responses, as well as slamming pressure of ship induced by cross wave, can be quite large, and they are quite different from those in regular wave. Therefore, ship navigational safety when suffering cross waves should be further concerned.

Slamming and green water loads on a ship sailing in regular waves predicted by a coupled CFD–FEA approach

“…As is known, CFD simulations can also predict the slamming and green water pressures along with rigid body ship seakeeping calculation (Huang et al, 2021b;Jiao and Huang, 2020). However, the hydroelasticity may have certain effects on the impact pressures on a flexible hull, which is not much investigated in the existing work.…”

“…Xie et al (2020) provided a hybrid two-step solution by combining linear seakeeping theory and the CFD method to predict asymmetrical slamming loads of a ship in oblique waves. Jiao and Huang (2020) and Huang et al (2021b) calculated the global motion responses and bow flare slamming pressure of the S175 ship operating in multi-directional waves by a RANS method. Lin et al (2021) calculated the asymmetric motion and slamming pressure of a containership due to parametric rolling in head regular waves by CFD and also compared the results with those by potential flow theory and tank model tests.…”

Investigation on Resistance, Squat and Ship-Generated Waves of Inland Convoy Passing Bridge Piers in a Confined Waterway

“…Five outer corrections and two pressure corrections were employed for the velocity-pressure coupling. All equations were solved to the tolerance of ( 8) −  [35,36]. Each case used 52 processors and takes about 12 CPU hours to finish.…”

Development and validation of a numerical wave tank based on the Harmonic Polynomial Cell and Immersed Boundary methods to model nonlinear wave-structure interaction

“…In the last decade, the use of CFD code has become increasingly popular in the scientific community, see for instance the applications of industrial or research codes like OpenFOAM R (Jacobsen et al, 2011;Hu et al, 2016;Higuera et al, 2013;Windt et al, 2019), STAR-CCM+ (Oggiano et al, 2017;Jiao and Huang, 2020), ANSYS-FLUENT (Kim et al, 2016;Feng and Wu, 2019), and REEF3D (Bihs et al, 2016), just to mention few of them.…”