Numerical simulation of ship model resistance of T-shaped nozzle
The T-shaped nozzle is a model test device attached to the rear of the water-jet propulsion unit that changes the longitudinal jet direction of the water flow to the lateral direction.The device only generates force on the internal flow passage of the ship hull,which not only reflects the influence of the suction effect of the propulsion device on the stern boundary layer under the self-propelled state of the ship model propelled by the conventional nozzle,but also has little influ-ence on the floating state of the shipbody.Only through the ship model resistance test and PIV test in the capture area,com-bined with the momentum flux method conversion,the influence of the propulsion system on the hull resistance in the con-ventional nozzle propulsion ship model self-propelled test can be separated.Through CFD method,the flow boundary condi-tion method is used to numerically simulate the resistance performance of a ship model with a T-shaped nozzle propulsion device,and compare with the model test results.Finally working principle of the T-shaped nozzle propulsion device is ex-plained.
万方数据
维普
