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Method for measuring hydrodynamic interference coefficient of rudders of double-rudder ship to ship body

A technology of interference coefficient and hydrodynamics, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as increment and interference, and achieve reduced experimental workload, good engineering results, and high data correlation Effect

Pending Publication Date: 2020-11-03
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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Problems solved by technology

The physical reason for the interference of the rudder to the hull is mainly due to the change of the stern flow field caused by the rudder, which leads to the increase of the force acting on the hull in three directions. At present, there is no method to measure the interference of the rudder to the hull.

Method used

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  • Method for measuring hydrodynamic interference coefficient of rudders of double-rudder ship to ship body
  • Method for measuring hydrodynamic interference coefficient of rudders of double-rudder ship to ship body
  • Method for measuring hydrodynamic interference coefficient of rudders of double-rudder ship to ship body

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Embodiment Construction

[0036] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] This application discloses a method for measuring the hydrodynamic interference coefficient of the rudder of a double rudder ship to the hull, please refer to figure 1 Shown in the flow chart, the method comprises the steps:

[0038] In step S1, a ship model of a ship with twin rudders is made, and the ship model is tested under different test conditions without propellers, and the ship model is subjected to a manipulative rotary motion constraint model test. During the ship model test of the present application, the propeller model on the ship model was dismantled, and there were only the hull model and the rudder model, that is, the ship model in the present application was composed of the hull model and the rudder model. There is at least one difference in the rudder angle δ, drift angle β, and angular velocity r in different test...

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Abstract

The invention discloses a method for measuring the hydrodynamic interference coefficient of rudders of a double-rudder ship to a ship body, relates to the technical field of hydrodynamic force, and aims to obtain corresponding test data by carrying out a maneuverable rotary motion constraint model test on a ship model in a laboratory pool environment of the double-rudder ship. The hydrodynamic interference coefficient of the rudders to the ship body can be obtained by performing data interpolation, regression analysis and other data processing methods on the ship body strength, the left rudderforce and the right rudder force in the test data, the technical vacancy in the field is filled, the invention only needs to perform test through one ship model, the test workload is reduced, all thedata are integrated, and the test efficiency is improved. Data correlation is high, and good engineering effect is achieved.

Description

technical field [0001] The invention relates to the field of hydrodynamic technology, in particular to a method for measuring the hydrodynamic interference coefficient of the rudder of a double-rudder ship to the hull. Background technique [0002] Ship restraint model test is currently the most widely used method to obtain ship hydrodynamic derivatives, that is, mechanical constraints are used to force the ship model to perform prescribed motions, such as linear motion, rotary motion, etc. During the model test, by systematically changing the ship model The motion parameters of the model are measured, and the hydrodynamic force acting on the ship model is measured, so as to obtain the hydrodynamic coefficients. During the constrained model test of the rotary motion in the ship restraint model test, the ship model is forced to perform a steady rotary motion at a certain radius of gyration, a certain attitude angle, and a certain angular velocity, and the hydrodynamic force a...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/28G06F119/14
CPCG06F30/15G06F30/28G06F2119/14Y02T90/00
Inventor 赵桥生国威李永成方田王习建徐令令
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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