NUMERICAL STUDY ON THE DEFORMATION OF A NET PANEL IN STEADY AND OSCILLATORY FLOW

摘要

Based on the hydrodynamic coefficients obtained in a series of experiment on a full-scale net panel, numerical simulation is conducted to study the interaction between flow and the flexible net in waves and current. Finite element model was constructed and modified Morison Equation was adopted to estimate the deformation of the net sheet. The deformation of the net sheet was investigated quantitatively by estimating the minimum projected area and comparing the area reduction ratio under each test case. Furthermore, the relationship between the net's area reduction ratio and the nondimensionalized parameters in the model testing, including the structure's Reynolds number, KC number, frequency parameter and reduced velocity was discussed.