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TIME DOMAIN SOLUTION OF UNSTEADY FLOW AROUND A SHIP

Li、Yile、Liu、Yingzhong、Miao、Guoping

1998Acta Scientiarum Naturalium Universitatis SunyatseniEngineering被引 1

摘要

The unsteady flow around a ship advancing at constant speed is studied in time domain using a higher-order boundary element method. The Rankine source is employed and the ship hull and free surface are discretized into 8-node isoparametric elements. A modified Green formula is used to overcome the numerical difficulty arising from the singular or quasi-singular integrals in the integral equation. In the case of τ> 0. 25, a rigid wall condition is applied to the upstream and a numerical beach is applied downstream to absorb the outgoing waves. The numerical results are satisfactory, compared with the experimental results.

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