Abstract

The first order mation responses of a floating structure and the hydrodynamic forces in regular waves are obtained by means of the linear potential theory. The first order potential is obtained directly from the numerical solution of the improved Green integral equation which is characterized by the combined surface distribution of sources and normal doublets. The mean second order wave drift force is also calculated by means of the near field method. It seems that the present method gives more accurate numerical results than other methods and the agreement between numerical and experimental results appears to be satisfactory.

Keywords

• radiation wave;
• diffraction wave;
• linear wave theory;
• green integral equation;
• wave loads;
• wave drift force

• 방사파;
• 산란파;
• 선형파 이론;
• 적분방정식;
• 파랑하중;
• 파랑표루력;