Investigation of Sinkage and Trim by Ships in Shallow Water Based on Overset Grid

Abstract:

A study on the navigation behavior for ships in shallow water had been carried out on CFD. The problem of surface ship hulls free of sinkage and trim in shallow water is analyzed numerically by simultaneously solving equations of the Reynolds averaged Navier-Stokes (RANS). The computations, based on the single-phase level set and overset grid, are discretized by finite volume method (FVM). An earth-based reference system is used for the solution to the fluid flow, while a ship-based reference is used to compute the rigid-body equations of motion. A S60 C_B=0.6 ship model is taken as an example to the numerical simulation. Numerical results of the sinkage and trim of the seven Froude Numbers (F_n=0.5~0.8) are compared against experimental data, which have a good agreement.

• Periodical: Applied Mechanics and Materials (Volumes 713-715)
• Pages: 2126-2132
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.713-715.2126
• Online since: January 2015
• Authors: Da Ming Sun*, Ji Yong Liu, Qing Wen Kong
• Keywords: Overset Grid, Shallow Water, Sinkage, TRIM

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