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A higher order boundary element method (HOBEM) is implemented for wave-current action on structures. The free-term coefficient and Cauchy principal value (CPV) integrals are computed by direct methods. Numerical experiments are carried out to validate the computation of free-term coefficient and CPV integrals. The results show that the computation precision of free-term coefficient is very high for various bodies, even with edges and corners, and the convergence speed is fast for CPV integrals for different meshes. The comparison of the second order mean drift force due to wave-current action on a uniform cylinder is made with an analytic solution. It is found that good agreement exists between the present calculation and the analytic solutions. Finally, the numerical code is applied for computing wave-current action on Snorre TLP.
A higher order boundary element method (HOBEM) is implemented for wave-current action on structures. The free-term coefficient and Cauchy principal value (CPV) integrals are computed by direct methods. Numerical experiments are carried out to validate the computation of free- term results and the CPV integrals. The results show that the computation precision of free-term coefficient is very high for various bodies, even with edges and corners, and the convergence speed is fast for CPV integrals for different meshes. The comparison of the second order mean drift force due to wave-current action on a uniform cylinder is made with an analytic solution. It is found that good agreement exists between the present calculation and the analytic solutions. Finally, the numerical code is applied for computing wave-current action on Snorre TLP.