Analysis method for calculating hydrodynamic characteristics of submerged net cage

An analysis method and characteristic calculation technology, which is applied in the field of analysis of the hydrodynamic characteristics calculation of submerged net cages, can solve problems such as complex coupling effects and loss of production in cage culture

Active Publication Date: 2021-07-09
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

At the same time, the net structure is equipped around the truss-type steel structure. The coupling effect betwee...

Method used

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  • Analysis method for calculating hydrodynamic characteristics of submerged net cage
  • Analysis method for calculating hydrodynamic characteristics of submerged net cage
  • Analysis method for calculating hydrodynamic characteristics of submerged net cage

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Embodiment 1

[0060] The present invention a kind of analytical method of submerged net cage hydrodynamic characteristic calculation, mainly comprises the following steps:

[0061] (1) Submersible net cage components include the main frame, net clothing, buoys and mooring system; when the submersible net cage performs six-degree-of-freedom swaying motion on the free surface of still water, the first-order unsteady velocity potential Φ satisfies the following conditions This leads to a definite solution to the simultaneous equations:

[0062] On a free surface:

[0063] Wet Surface Conditions:

[0064] Seabed boundary conditions:

[0065] Boundary conditions at infinity:

[0066] In the formula, g is the acceleration of gravity, t is time; U is the velocity of a certain place on the wet surface, n is the normal direction of a certain place on the wet surface; H is the distance from the sea bottom to the horizontal plane; R is the distance from a point in space to the analysis poin...

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Abstract

The invention relates to an analysis method for calculating hydrodynamic characteristics of a submerged net cage. The analysis method comprises the following steps: determining overall modeling parameters of a submerged net cage structure; dividing grids; simulating a netting unit; determining constraint conditions; carrying out wave current load calculation; and carrying out dynamic analysis on the submerged net cage structure at different diving depths. The analysis method can be used for ensuring the safety and the stability of the submerged net cage culture facility.

Description

technical field [0001] The invention relates to the field of deep-sea aquaculture equipment engineering, in particular to an analysis method for calculating the hydrodynamic characteristics of submerged net cages Background technique [0002] It is the strategic demand and future trend of China's aquaculture development to open up the space for offshore deep-sea aquaculture and develop large-scale base station-type deep-sea aquaculture equipment technology. It can be predicted that deep-sea aquaculture, as an important support for fish industrialized aquaculture and sustainable development, is facing unprecedented opportunities for development. Among them, the research and development of deep-sea aquaculture net cages will greatly promote the expansion of aquaculture space and the transformation of production methods in China, and enhance the utilization capacity of my country's deep-sea waters and fishery resources. [0003] Unlike traditional deep-water cages, these large...

Claims

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 崔勇关长涛贾玉东公丕海
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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