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Publications
Xu, C., Zhou, XQ., Ren, H.L., Sutulo, S. and Guedes Soares, C. (2024), Real-time calculation of ship to ship hydrodynamic interaction in shallow waters with adaptive mesh refinement, Ocean Engineering, Vol. 295, 116943
A cell-based adaptive mesh refinement scheme is implemented in the framework of bottom discretization to realize real-time computation with a discretization of patches with reasonable panel sizes capable of representing the flow characteristics, which vary significantly during the interaction process increasing the difficulty of discretization. Distributing a layer of singularities on a seabed patch beneath the ship is an effective potential flow theory-based approach for fast calculation of ship hydrodynamic interaction forces in shallow waters, and can deal with irregular seabed topology. However, to obtain results of satisfying accuracy, a considerably large part of the seabed beneath the moving ship needs to be modelled as the boundary of concern. In the present study, the local error induced by the constant panel method is evaluated by the interpolation error estimation, and the performance of the improved algorithm is analysed and presented with different error estimators, refinement criteria and subdivision schemes. It is found that the accuracy and efficiency are well balanced, and a relatively small number of panels on the bottom can produce results with sufficient accuracy by the present appropriate adaptive mesh refinement approach.
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