34 results about "Ship hydrodynamics" patented technology

The invention discloses a ship model hydrodynamic performance testing device. The ship model hydrodynamic performance testing device comprises an installation platform, a fixed platform, a movement platform, a six-component balance, universal hinges and six electric cylinders; the upper ends and the lower ends of the six electric cylinders are connected with the fixed platform and the movement platform through the universal hinges; the six-component balance is installed in the center of the equilateral triangle formed by three fulcrums; the six-component balance is in rigid connection with the gravity of a testing ship model; the fixed platform is installed on a trailer beam through the installation platform; the six electric cylinders carry out telescopic movement to enable the movement platform to shift and rotate in different directions, and therefore swaying, surging, heaving, rolling, pitching and yawing movements of the ship model are simulated. The invention further provides a ship model hydrodynamic performance testing method with the ship model hydrodynamic performance testing device utilized. The ship model hydrodynamic performance testing device and method can accurately simulate the multi-degree-of-freedom movements of the ship model, various hydrodynamic parameters of the ship model can be measured under different testing states by combination with the six-component balance, and the hydrodynamic performance of the ship model is represented comprehensively.

The invention provides a ship hydrodynamic comprehensive energy-saving device and an installation method thereof. The ship hydrodynamic comprehensive energy-saving device is characterized in that it includes a propeller-rudder combined vortex-eliminating energy-saving device for dissipating energy of the vortex generated by the propeller, and the propeller-rudder The combined vortex-elimination and energy-saving device is fixedly installed at the tail of the propeller tail shaft and rotates with the rudder blade; it includes a combined energy-saving rectifying fin installed on the rudder blade for vortex elimination and rectification; it includes the double tail fins installed on the ship body, and Front rectifier fin structure located in front of the propeller. This comprehensive energy-saving device aims at the shortcomings of the existing ship energy-saving technology, and adopts corresponding technical solutions to improve it in order to achieve the purpose of energy saving, and after organically and comprehensively utilizing all energy-saving methods, it can achieve the final energy-saving effect .

The invention discloses a ship water power online forecast based ship shake reduction control system, and belongs to the technical field of ship and ocean engineering. Online self-adaption forecast ofship water power can be achieved according to a water power equation on the basis of the ship motion parameter real-time forecast and dynamic balancing idea and can be used as a basis of shake reduction control. A sensor module can measure the ship motion parameter, and a water power online estimation module and a fin angle allocation module can perform real-time self-adaption control on ship motion; and compared with the conventional shake reduction control method, the self-adaption and a water power estimation model are more perfect. The ship shake reduction system can be arranged on shipswith single-pair fins or dual-pair fins, can achieve horizontal shake reduction and vertical shake reduction of the ships with single-pair fins, can achieve horizontal shake reduction and vertical shake reduction, and vertical-horizontal shake reduction of the ships with dual-pair fins, can be widely used for shake reduction control of various water ships, and has good application prospect and good economic benefits in the field of ship shake reduction control.

The invention relates to a simulated experience system for ship hydrodynamic performance, comprising: a virtual simulation test platform, VR equipment and information processing equipment; the information processing equipment is used to receive ship-related information input by users for VR experience, and obtain the operation of the ship Parameters; the virtual simulation test platform is used to carry out collaborative simulation of the marine environment and ship motion model according to the operating parameters output by the information processing equipment, and obtain the ship's motion state parameters; VR equipment is used to carry the experiencer and receive the output of the virtual simulation test platform The parameters of the motion state adjust the carrying device to achieve an immersive experience of the ship's sailing. The system of this embodiment utilizes computer simulation technology to simulate the navigation attitude of ships in different ocean environments, and combines virtual reality technology to create a realistic ship navigation environment from a visual perspective, which is convenient for experiencers to experience.

The present disclosure discloses a ship hydrodynamic prediction method and system based on the wet surface grid of the hull in waves, and reads the model value points of the ship; according to the model value points on each waterline, the cubic B-spline expression of the waterline is back-calculated ; Based on the cubic B-spline expression of the waterline, calculate the generalized section curve of the hull shape; determine the type of wave and the expression of the wave surface, and find the intersection point of the generalized section curve and the instantaneous wave surface according to the type of wave and the expression of the wave surface, Then, the wet surface mesh of the hull in waves is obtained; based on the wet surface mesh of the hull in waves, the hydrodynamic force on the ship in waves is predicted.