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Ship propeller noise forecasting method considering fluid-structure interaction

A technology of fluid-solid coupling and propeller, which is applied in the direction of instruments, electrical digital data processing, computer-aided design, etc., can solve the problem of far distance between noises, and achieve the effect of simple method, high noise prediction effect and small noise prediction error

Pending Publication Date: 2020-05-19
WEIHAI ZHONGFU XIGANG SHIP +1
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Problems solved by technology

This noise prediction method that only considers the excitation of the main engine is far from the noise generated by the actual work of the ship.

Method used

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  • Ship propeller noise forecasting method considering fluid-structure interaction
  • Ship propeller noise forecasting method considering fluid-structure interaction
  • Ship propeller noise forecasting method considering fluid-structure interaction

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and examples. In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0022] The present invention takes a steel riverboat as an example for illustration. The steel ship is a transverse skeleton hull structure designed in accordance with the steel ship construction code. The main dimensions of the steel ship and its propeller are shown in Table 1.

[0023] 1. Establish a propeller model and a hull shape model setting model according to the hull design drawing, type line diagram, and propeller type value table;

[0024] Table 1 ...

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Abstract

The invention relates to the technical field of ship noise forecasting methods, and concretely relates to a ship propeller noise forecasting method considering fluid-structure interaction. The noise forecasting method is characterized by comprising the following steps: 1, establishing a propeller model and a ship appearance model according to a ship body design drawing, a profile drawing and a propeller profile value table; 2, combining the propeller model and the ship body shape model, and performing non-fluid-structure interaction transient flow field calculation; 3, performing mesh generation, material attribute endowing and boundary condition setting on the ship body structure model; 4, calculating a fluid-structure interaction transient structure of the ship body and the propeller; and 5, considering the noise forecasting under the fluid-structure interaction condition. The noise forecasting method is adopted to achieve the advantages of being simple, small in noise forecasting error, high in noise forecasting effect and the like.

Description

technical field [0001] The invention relates to the technical field of ship noise forecasting methods, in particular to a ship propeller noise forecasting method that considers fluid-solid coupling, has simple methods, small noise forecast errors, and high noise forecast effects. Background technique [0002] As we all know, the mechanical noise caused by equipment vibration is the main source of ship vibration and noise, which seriously restricts the realization of the goal of ship quietness and comfort, and has always been the focus of ship vibration and noise control. The pulsating force received by the marine propeller during operation is transmitted to the hull through the shafting, which aggravates the vibration of the main engine room of the ship and seriously reduces the comfort of the ship. In addition, for high-speed ships, the torrent will generate low-frequency vibrations on the hull plate, which will have a certain impact on the safety of the hull and the quietn...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F119/12G06F119/14
Inventor 姜仁威王仁智于昌利谭军波郭志慧
Owner WEIHAI ZHONGFU XIGANG SHIP
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