Ship manoeuvrability hydrodynamic testing device and method

Abstract

The invention relates to the field of ship performance testing and provides a ship manoeuvrability hydrodynamic testing device and method. The ship manoeuvrability hydrodynamic testing device comprises a ship model, a data acquisition module and a data processing module. The data acquisition module is mounted on the ship model, and the data processing module is connected with the data acquisitionmodule. The data acquisition module comprises two ship hull force sensors, a three-component rudder force sensor and a paddle dynamometer, and the two ship hull force sensors, the three-component rudder force sensor and the paddle dynamometer are used for acquiring ship hull hydrodynamic data, rudder hydrodynamic data and paddle hydrodynamic data respectively. The data processing module receives the hydrodynamic data acquired by the data acquisition module and performs data regression analysis on the hydrodynamic data to obtain a hydrodynamic derivative. The ship manoeuvrability hydrodynamic testing device and the method have advantages that accuracy in ship manoeuvrability hydrodynamic testing is improved, testing time and testing cost are saved, and simple structure, high operability anda promising application prospect are realized.

Description

technical field [0001] The invention belongs to the field of ship performance testing, relates to the field of ship maneuverability, in particular to a ship maneuverability hydrodynamic test device and method. Background technique [0002] Ship maneuverability refers to the performance of a ship to change or maintain its speed of motion, attitude and direction by means of its control devices. As the focus of ship performance research, ship maneuverability is related to the safety of ship operation and is one of the important factors affecting the safe navigation of ships. Accurate performance prediction can reduce the risk of ship collision with each other. [0003] In the ship development stage, numerical calculations or constrained model tests are mainly used at home and abroad to obtain ship maneuverability hydrodynamic derivatives. However, numerical calculation methods have problems such as calculation accuracy and time-consuming. Therefore, at present, constrained mode...

AI Technical Summary

Problems solved by technology

However, the method of this patent cannot obtain the crucial acceleration hydrodynamic derivatives of the hull in the longitudinal, lateral and shaking directions, which reduces the accuracy of the performance prediction of the ship's maneuverability

In addition, the current domestic tow tank trailers only run sideways for the hydrodynamic test of the maneuverability of the ship model, while the tow tank is at least a few hundred meters long, and the test in one direction increases the test time and test cost.

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