Numerical Study on the Influence of Angles of Repose on the Stability of Cargo in a Cargo Hold

Abstract

Listen

Translate article

In recent years, cargo instability caused by fluidization is one of the main reasons for bulk carrier capsizing. Considering the complexity and diversity of the actual cargo, the mechanism of fluidization has not been fully revealed. Taking a single cargo hold of a 57,000 DWT bulk carrier as an example, a 3D cargo hold scaled model was established, and the movement state of the cargo in the cargo hold under different angles of repose is numerically simulated. Results show that under the precondition of model parameters, angle of repose of the cargo can be further modified by the friction coefficient between particles. The smaller of the angle of repose, the stronger of the fluidity of the cargo becomes. There exists a critical angle of repose, below which the center of gravity offset of the cargo becomes more obvious and the stability of the cargo drops sharply. Simulation model and numerical method involved in this research can provide some references for predicting the stability of the marine transportation of solid bulk cargoes.