Numerical Simulation of Ship Maneuvers through Self-Propulsion

Abstract

The typical maneuvering of a ship can reflect its maneuvering characteristics, which are closely related to the safety and economy of its navigation. The accurate prediction of a ship’s maneuvering characteristics is essential for its preliminary design. This paper adopts the overset grid method to deal with multibody motion and the body-force method to describe the thrust distribution of the propeller at the model scale, as well as to obtain the changes in the hydrodynamic load and the characteristic parameters in a computational fluid dynamics (CFD) maneuver simulation. Then, the paper compares the results with those of a self-propulsion experiment conducted at the China Ship Scientific Research Center. The numerical results show that the maneuverability characteristics obtained from the CFD simulation are in satisfactory agreement with the experimental values, which demonstrates the applicability and reliability of the combination of the overset grid with the body-force method in the numerical prediction of the typical maneuvering of a ship. This provides an effective pre-evaluation method for the prediction of a ship’s maneuvering through self-propulsion.

Numerical Study on self-propulsion Performance of submarine Based on CFD

“…When the overall modelling method is used, the computational accuracy is high and the interaction between underwater vehicle and propeller can be reflected more accurately, but the computational efficiency is low; whereas the body force method is simple in modelling, high in computational efficiency, and can comprehensively predict flow field information. Zhan et al [14] used overlapping mesh to process the multibody motions of the S175 ship, and simulated the rotation of the propeller based on the body force method. The predicted rotational motion parameters of the propeller were in good agreement with the test data.…”

Numerical Study of Wave Drift Load and Turning Characteristics of KVLCC2 Ship in Regular Waves Based on TEBEM

“…Kim et al [9] used the Reynolds-averaged Navier-Stokes (RANS) solver to numerically simulate PMM maneuvering motion to obtain hydrodynamic derivatives of ship maneuvering. Shang et al [10] used the overlapping grid technology and a propeller volumetric force model to realize numerical prediction of zigzag maneuvers in calm water conditions. Ma et al [11] conducted numerical and physical tank studies on ship PMM movement in regular waves using the URANS (Unsteady RANS) viscous flow solution and overlapping grid technology.…”