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A test method for flow field or air bubble field in cross-section of ship model

A cross-section and air bubble technology, applied in the field of ships and ocean engineering, can solve the problem of not being able to photograph the transverse flow field or bubble field of the ship model, and achieve the effect of simple structure and reasonable layout

Active Publication Date: 2021-05-28
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The flow field measurement equipment currently used in the market can capture the longitudinal flow field of the ship model, but cannot capture the transverse flow field or bubble field of the ship model

Method used

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  • A test method for flow field or air bubble field in cross-section of ship model
  • A test method for flow field or air bubble field in cross-section of ship model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown in , a black and white square grid is drawn on one side of the target plate, and the size of the target plate is determined according to the cross-sectional size of the ship model.

[0024] Such as figure 2 As shown, the target plate is placed in the circulating water tank 2 perpendicular to the water surface, and its plane is plane 3; then the high-speed camera 5 is placed, and its shooting angle and elevation angle are adjusted so that the target plate is completely displayed in the photo; after the high-speed camera 5 is fixed Place the constant-bright laser sheet light source 1, adjust its spatial position and focus position, so that the sheet light source 1 coincides with the plane 3, and remove the target plate in the water tank after the sheet light source 1 is fixed; Paint the outer surface of the hull with black matte paint within the range to avoid reflections when the laser irradiates the hull and affect the shooting results; after...

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Abstract

The invention belongs to the technical field of ships and ocean engineering, and in particular relates to a test method for a cross-sectional flow field or bubble field of a ship model. The invention realizes the measurement of the space-time distribution of the air bubbles in the hull, and can be used to study the distribution law of the air bubbles generated in the hull along the bottom of the ship. The invention has simple structure and reasonable layout, can convert the distribution of air bubbles on the cross section into a mathematical model available for analysis, and provides an effective technical solution for studying the distribution law of air bubbles along the bottom of a ship.

Description

technical field [0001] The invention belongs to the technical field of ships and ocean engineering, and in particular relates to a test method for a cross-sectional flow field or bubble field of a ship model. Background technique [0002] The flow field measurement equipment currently used in the market can capture the longitudinal flow field of the ship model, but cannot capture the transverse flow field or bubble field of the ship model. However, information on the transverse flow field and bubble field in the cross-section of the ship model is extremely important for the line design of the ship model, so there is an urgent need for a device that can photograph the transverse flow field of the ship model. Contents of the invention [0003] The purpose of the present invention is to provide a test method for the cross-sectional flow field or air bubble field of a ship model that can realize the measurement of the space-time distribution of the hull air bubbles, and then s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B71/10
CPCB63B71/10
Inventor 姚熊亮马贵辉黄祥宏栾景雷戴捷王志凯秦再白孙龙泉陈锦李文朋
Owner HARBIN ENG UNIV
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