Abstract
Currently, little information exists on the validity of interface-capturing methods in predicting local ship wave loads in short and steep waves. This study compares computational and experimental results in such a case (kA = 0.24, L wave /L ship = 0.16). The results allow the variation of wave loading between ten locations in the bow area of the ship to be observed. The computations were performed with an unstructured RANS solver that models free-surface flows with a volume-of-fluid method. In the model tests, the wave loads were measured with pressure sensors. The analysis of the results focuses on the wave conditions and on the pressure histories of the local wave loads. The computational and experimental results are in good qualitative agreement and encourage the further use of the computational results.
Highlights
Interface-capturing methods have an increasing role in predicting ship wave loads at present
Currently, little information exists on the validity of interface-capturing methods in predicting local ship wave loads in short and steep waves
The analysis of the results focuses on the wave conditions and on the pressure histories of the local wave loads
Summary
Interface-capturing methods have an increasing role in predicting ship wave loads at present. In the case of predicting ship wave loads with interface-capturing methods, several previous studies have contributed to this task, e.g. One of the reasons is the large number of possible options regarding the characteristics of both waves and hull forms This means that publishing more validation-type studies on different ship wave load cases increases the confidence in the methods. From the theoretical point of view, the interface-capturing methods themselves are not known to set any limitations on the ship wave load cases that are allowed In this regard, the primary purpose of validation-type studies is to learn if the selected way of applying a method to a flow case is correct. The iterative performance of the numerical solutions has been improved by applying another discretisation scheme for the convective term of the volume fraction conservation equation
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