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Test model of flow-induced pulsation pressure for bow sonar dome

A technology of pulsating pressure and test model, applied in fluid dynamics test, testing of machine/structural components, measurement device, etc. Effect

Active Publication Date: 2019-03-08
CHINA SHIP DEV & DESIGN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the connection between the shroud and the hull structure, the turbulent environment of its own work is greatly affected by the hull structure

Method used

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  • Test model of flow-induced pulsation pressure for bow sonar dome
  • Test model of flow-induced pulsation pressure for bow sonar dome
  • Test model of flow-induced pulsation pressure for bow sonar dome

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Embodiment Construction

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like figure 1 Shown is the flow-induced pulsation pressure test model of the bow sonar dome of a preferred embodiment of the present invention, including the sound-permeable window 10, the sound-permeable window 10 adopts rigidity to meet the requirements of the equivalent rigid body surface, and has good sound-permeable performance made of composite materials. Preferably, the sound-permeable window 10 is made of fiberglass, and the thickness of the fiberglass is not less than 6mm. A top steel box 20 is installed on the top of the sound-transmitting window 10 , and a rear steel box 30 is installed at the rear of the sound-transmitting window 10 . In view of the fact that the external line shape of the acoustic ...

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Abstract

The invention relates to a prow sonar fairwater flow-induced pulsating pressure testing model, and the model comprises an acoustic window which is made of glass fiber reinforced plastics. The top of the acoustic window is provided with a top steel box, and the rear part of the acoustic window is provided with a rear steel box. The shape line of the acoustic window is determined in a manner of scale reducing according to the shape line of an actual fairwater acoustic window. The top steel box and the rear steel box are used for simulating a ship body structure which is connected with the actual fairwater acoustic window. The shape line of the top steel box is determined in a manner of scale reducing according to the shape line plan of an actual ship body structure. The smooth transition of the shape line of the rear steel box is achieved. The external surface of an acoustic window housing is provided with a pressure sensor. The model can meet the testing demands of the turbulent flow excitation characteristics of a fairwater, and provides data support for the calculation of the flow-induced noise of the ship fairwater. The model successfully solves an obtaining problem of the surface pulsating pressure of the fairwater, can greatly reduce the construction cost and test cost of scale-reduction prototype testing, and is greater in economic benefits.

Description

technical field [0001] The invention relates to the technical field of ship model design, in particular to a bow sonar dome flow-induced pulsation pressure test model. Background technique [0002] The bottom of the bow of modern large and medium-sized surface ships is mostly equipped with a bow detection integrated sonar array. Configure the shroud. [0003] For ships, the optimization of the dome profile of the bow sonar is not only the focus of the overall rapid design, but also an important direction of self-noise control in the dome. In order to meet the requirements of self-noise control in the working area of ​​acoustic instruments, the control of the radiated noise of the dome structure excited by turbulent flow is usually considered in the optimization design of the dome profile when the ship is sailing. Different dome profiles correspond to different turbulence excitations. In the early stages of design, surface turbulence-induced pulsating pressures must be red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 张大海魏强郑超凡邢军华王汝夯张成
Owner CHINA SHIP DEV & DESIGN CENT