Outlier analysis of sloshing impact loads on liquid ship cargo

Abstract

This paper introduces an outlier analysis which can improve the convergence of the statistical analysis results of sloshing model test data. The paper classify possible outliers in the sloshing model test into three categories and present a treatment method for each outlier. The developed outlier analysis is adapted to the model test results for the cargo of the liquefied-natural-gas (LNG) carrier in operation. The results of the present new method are compared with those of the conventional procedure, particularly focusing on long-term sloshing prediction. Through this study, the effectiveness of the present method is observed, and it is found that the present method provides is robust and reliable results in the application of experimental data for load prediction.

A Methodology to Assess the Sloshing Effect of Fluid Storage Tanks on the Global Response of FLNG Vessels

“…However, this sloshing phenomenon should also be studied if the vessel is modified to move other fluid cargo types. For the design and operation of an FLNG vessel, the naval designers must investigate the sloshing effect of the internal fluid in the tanks on the global motion response and the vessel's structural behavior in order to ensure the safe performance of the vessel under different operating and extreme environmental conditions [2][3][4][5].…”