A fishway design method based on the behavior of fish swarms
A design method and fish technology, applied in sea area engineering, architecture, climate change adaptation, etc., to improve the effect of passing fish, improving swimming efficiency, and increasing kinetic energy
Active Publication Date: 2022-05-10
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0017] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and provide a fishway design method based on the behavior of fish swarms to solve or improve the above-mentioned problems
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0045] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0046] According to an embodiment of the present application, refer to Figure 2-Figure 3 , the fishway design method based on the behavior of fish clusters in this program, including:
[0047] S1, arranging the D-shaped cross-section cylinders in the form of rectangles and rhombuses;
[0048] S2. According to the length of the target fish species crossing the dam and the Reynolds number R of the water flow ed , to set th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fishway design method based on fish swarming behavior habits, S1, arranging D-shaped cross-section cylinders in the form of rectangles and rhombuses; S2, according to the length of the dam target fish species and the Reynolds number R of the water flow ed , set the vertical distance between the D-shaped cross-section cylinders; S3, set the distance between two adjacent D-shaped cross-section cylinders in the horizontal direction according to the length of the target fish species crossing the dam and the water flow velocity; S4, set according to the wagging amplitude of the target fish species crossing the dam The width of the D-shaped section cylinder is d; S5. Set the height of the D-shaped section cylinder according to the operating water depth of the fishway. Based on the behavior characteristics of fish clusters, the present invention proposes a fishway layout design method of a D-shaped cross-section cylinder that can generate wake vortices, and the downstream fish can obtain energy from the vortex street generated by the D-shaped cross-section cylinder. It is used to increase the kinetic energy of fish and improve swimming efficiency, that is, fish use Karman vortex and "channel effect" to improve their own swimming efficiency, so as to achieve the purpose of improving the fish passing effect of the fishway.
Description
technical field [0001] The invention belongs to the technical field of fishway structures, and in particular relates to a method for designing fishways based on fish swarming behavior habits. Background technique [0002] As an important facility for migratory fish and other aquatic animals to pass through artificial dams, fishways play an important role in coordinating the contradiction between dam construction and the ecological environment. Fishways are set on water retaining structures to meet the needs of migratory fish Requirements for upstream or downstream. On the basis of a large number of studies and observations, researchers at home and abroad have proposed various forms of fishways such as pool type, vertical slit type, baffle type, simple type, fish ladder and fish gate, and each type of fishway forms different water flows. Conditions to adapt to the smooth passage of different fish through water retaining structures such as sluices and dams. [0003] At prese...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/08
CPCE02B8/08E02B8/085Y02A40/60
Inventor 白音包力皋吴海涛刘丰穆祥鹏武哲如周瑾曹平李晓晨
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES