A NUMERICAL STUDY FOR SELF PROPELLED JBC WITH AND WITHOUT ENERGY SAVING DEVICE
Numerical simulations are performed to study the effectiveness of the wake equalizing duct fitted on JBC. Computations of JBC with and without energy saving device are performed by the in house multifunction solver naoe FOAM SJTU, which is based and developed on the open source code OpenFOAM. The solver is also implemented with dynamic overset grid that allows for arbitrary rotational speed of the propeller during the computation. Self propulsion points are obtained in a single computation by using a controller to modify the propeller RPS until the target speed is reached. Self propulsion factors for JBC with and without ESD are analyzed and compared with experimental data.