Development of a method for analyzing vibration in large-scale ship models using the structure–fluid interaction, part 2: Application to a large-scale model

Abstract

An initial estimate of vibration phenomena is advantageous for highly accurate prediction of vibration, such as estimating ship vibration during the design stage. However, large-scale models have been difficult to handle due to the computational power required. A conventional accurate method, finite element analysis, requires a large amount of time for large-scale models. To address this, an explicit method of direct time integration using fluid–structure interaction with an outside fluid was developed. Numerical simulations using the proposed method were carried out for a large-scale ship model. The accuracy of the proposed method was verified by comparison between results from the proposed method and the conventional method. The observed results for natural frequency, vibration mode, and velocity were in good agreement with the results from conventional analysis. Therefore, the proposed method represents a feasible method of analyzing vibration analysis in large-scale models.