Intelligent control system and control method based on bubble drag reduction and M ship form combination

Abstract

The invention discloses an intelligent control system and control method based on bubble drag reduction and M ship form combination. The device comprises a GPS tachometer, a control unit, an air compressor, an air valve and a porous bubble conversion device. The method comprises the following steps: 1, acquiring the real-time speed V of a M ship form; 2, substituting the real-time speed V into an optimal jet quantity and velocity curve model so as to obtain the optimal jet quantity Q; 3, calculating a Froude number Fr according to the optimal jet quantity so as to obtain the optimal bubble diameter; and 4, forming bubbles with the corresponding diameter at the bottom of the M ship form according to the optimal bubble diameter and the optimal jet quantity. A manner of matching the M ship form with a bubble drag reduction hybrid ship form is utilized, real-time response is carried out according to measured velocity, the parameters of a bubble producing device are intelligently and dynamically adjusted, jet states, such as bubble size and unit-time jet quantity, are accordingly changed, an optimal drag reducing effect is finally realized, and the purposes of saving energy and reducing consumption are achieved.

Description

technical field [0001] The invention relates to the field of ships and marine engineering, in particular to an intelligent control system and control method based on air bubble drag reduction and M ship type compounding. Background technique [0002] The M ship type is a ship type with excellent sea resistance that has been researched and developed in the world for more than 10 years. This type of ship is a wave-absorbing ship type developed to reduce and avoid the waves generated by high-speed cruise ships from scouring and damaging the embankment. . It got its name because of its M-shaped bottom. On the basis of this type of ship, San Diego M Shipping Company of the United States developed it into an M-shaped channel planing boat through linear optimization and further improvement of the wave-absorbing effect. However, due to technical secrets, the literature on the M-type high-speed channel planing boat is relatively scarce, and the core technology of the design has not...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of the poor resistance performance of the M ship type when the ship sails under multiple working conditions, and propose a kind of air bubble drag reduction and M The intelligent control system and control method of the ship type compound, using the combination of the M ship type and the bubble drag reduction composite ship type, through the real-time response of the measurement speed, intelligently and dynamically adjust the parameters of the bubble generating device, and then change the jet state, such as the size of the bubble, the unit Time injection amount, etc., finally achieve the optimal drag reduction effect, and achieve the goal of energy saving and low consumption

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