Nonlinear wave loads on a vertical cylinder

摘要: Abstract Nonlinear contributions due to elevation of the free surface, dynamic head, and second-order velocity potential on wave loads are presented in closed-form expressions. Such nonlinearities resulting from large-amplitude ocean waves associated with irrotational flow interacting a fixed bottom-mounted vertical cylinder piercing surface. These expressed form dynamic, waterline quadratic forces all which depend square amplitude. The appropriate modifications made both classical Morison equation well-known linear diffraction theory MacCamy Fuchs for accounting effects. A limited comparative study is performed verify present theoretical derivations. In general, satisfactory agreements have been obtained test results various laboratory studies by different researchers. However, under certain environmental conditions, some discrepancies still exist measured results.