Modeling for active fin stabilizers at zero speed

For roll stabilization of ships at zero speed, a kind of active fins based on the reaction force from the fluid is developed, and its working mechanism and mode are proposed after a detailed investigation on the morphology in the nature. A composite method of the analytical approach and numerical simulations with FLUENT is used to analyze the forces on the active fin in the two-dimensional flow field, and the hydrodynamic force model is established using the Zhukovsky fin shape as a prototype. For the further research on the energy optimization control and engineering design for servo systems, mathematical models of the driving torque and energy dissipated are also established. The results from simulations are given to testify the correctness of the established models.