Flexible wall surface resistance reduction and pulsating pressure reduction effect testing device and use method

A pulsating pressure and effect testing technology, applied in measuring devices, fluid dynamics testing, testing of machine/structural components, etc., can solve the problems of low reliability of numerical simulation, and achieve compact structure, convenient operation and small size. Effect

Pending Publication Date: 2022-07-12
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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  • Abstract
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Problems solved by technology

However, numerical simulation needs to simplify the boundary conditions, materials, etc., and the reliability of numerical simulation alone is low, and the correctness of numerical calculation needs to be verified by experiments.

Method used

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  • Flexible wall surface resistance reduction and pulsating pressure reduction effect testing device and use method
  • Flexible wall surface resistance reduction and pulsating pressure reduction effect testing device and use method
  • Flexible wall surface resistance reduction and pulsating pressure reduction effect testing device and use method

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Embodiment Construction

[0039] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0040] like Figure 1-Figure 6 As shown, the device for testing the effect of drag reduction and pulsation pressure reduction on the flexible moving wall surface in this embodiment includes a water channel module, a flexible moving wall surface sensing actuation unit 4 and a measurement module,

[0041] The water circuit module includes a test section 3, an inflow channel, an outflow channel, and a return channel that are connected to each other;

[0042] The flexible motion wall sensing actuating unit 4 includes a substrate 404 and a skin 405 disposed on the base 404, and a plurality of single dielectric elastomer actuators are provided on the side of the substrate 404 away from the skin 405; the flexible motion wall sensing actuating unit 4 Set at test section 3,

[0043] The measuring device includes several sensors, the sensors are arranged upst...

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PUM

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Abstract

The invention relates to a flexible wall surface resistance reduction and pulsating pressure reduction effect testing device and a using method, the flexible wall surface resistance reduction and pulsating pressure reduction effect testing device comprises a water path module, a flexible movement wall surface sensing actuating unit and a measuring module, and a backflow channel of the water path module comprises a water inlet tank, a water outlet tank, a water pump and a backflow pipeline which are communicated with one another; the flexible movement wall surface sensing actuating unit comprises a base plate and a skin arranged on the base plate, and a plurality of single dielectric elastomer drivers are arranged on the side, away from the skin, of the base plate; the flexible movement wall surface sensing actuating unit is arranged at the test section, the measuring device comprises a plurality of sensors, the sensors are arranged at the upstream and downstream of the flexible movement wall surface sensing actuating unit, a laser displacement scanning system is arranged above the test section, and a camera is arranged on the side surface of the test section. The one-way dielectric elastomer driver is used for driving the thin metal plate to achieve flexible active deformation, and the defect that passive flexible wall face flow control is only suitable for a certain specific working condition is overcome.

Description

technical field [0001] The invention relates to the technical field of turbulence control deformation wall surface testing devices, in particular to a flexible wall surface drag reduction and pulsation pressure reduction effect testing device and a use method. Background technique [0002] Large marine fish have extraordinary low-resistance, low-noise and high-efficiency swimming capabilities. Experts and scholars at home and abroad have conducted in-depth research on the drag reduction and noise reduction effect of fish skin, including the use of theoretical analysis, numerical calculation, model tests and other means to study cetaceans. The bio-like epidermis function has initially obtained the drag reduction and noise reduction mechanism of the flexible epidermis. The skin of the dolphin can be abstracted as a flexible adaptive epidermis-turbulence control wall, which has drag reduction and noise reduction functions such as delaying transition and reducing the intensity o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00G01D21/02
CPCG01M10/00G01D21/02Y02T70/10
Inventor 张璇宋长友田于逵郑文涛孙海浪李永成崔城诚陈默
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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