Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River
Abstract
:Highlights
- To study the hydraulic characteristics of natural continuous curved river flows;
- To study the influence of the hydraulic characteristics of natural continuous curved river flows on fish habitats;
- To evaluate the impact of channel regulation on the construction of ecological waterways.
Abstract
1. Introduction
2. Materials and Methods
2.1. Mathematical Model
2.1.1. Hydrodynamic Control Equations
2.1.2. Boundary Conditions and Model Parameter Settings
2.1.3. Grid Division
2.2. The Shannon Diversity Index
2.3. Experimental Parameter Selection
2.4. Experimental Conditions
3. Results
3.1. Feasibility Analysis of the Mathematical Model
3.2. Numerical Simulation of Natural Rivers
3.2.1. Flow Velocity
3.2.2. Water Level and Depth
3.2.3. Flow Pattern
3.2.4. Fish Living Environment
3.3. Numerical Simulation Analysis after River Regulation
3.3.1. Flow Velocity
3.3.2. Water Level and Depth
3.3.3. Flow Pattern
3.3.4. Fish Living Environment
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Prototype Condition | Mathematical Model Test Conditions | ||||
---|---|---|---|---|---|
Natural Conditions | Natural Conditions | After Remediation | |||
Working Condition | Flow (m3/s) | Working Condition | Flow (m3/s) | Working Condition | Flow (m3/s) |
- | - | L1 | 374 | M1 | 374 |
A1 | 1520 | L2 | 1520 | M2 | 1520 |
- | - | L3 | 3410 | M3 | 3410 |
Gradient (‰) | 1.5 | 2 | 3 | 4 | 5 | 6 | 7 |
Velocity (m/s) | 4 | 3.8 | 3.5 | 3.2 | 2.9 | 2.5 | 2.1 |
Location | Error Value | Location | Error Value |
---|---|---|---|
C1 | −0.5% | C6 | 1.2% |
C2 | 0.1% | C7 | 1.8% |
C3 | 0.2% | C8 | 0.6% |
C4 | 0.3% | C9 | 0.9% |
C5 | 3.1% |
H (m) | Error Value | H (m) | Error Value | H (m) | Error Value |
---|---|---|---|---|---|
0 | −3.73% | 876.6821 | 3.69% | 1667.3218 | −5.16% |
101.8836 | −2.96% | 952.0129 | 9.00% | 1709.6348 | 2.45% |
166.9831 | −4.83% | 1022.0596 | 0.28% | 1747.4577 | 4.35% |
237.3158 | −4.38% | 1100.1048 | 13.22% | 1825.6284 | 6.17% |
311.4188 | −6.02% | 1159.6542 | 7.08% | 1868.7288 | 3.21% |
381.3038 | −8.39% | 1210.8155 | 6.25% | 1903.3225 | 3.61% |
420.921 | −8.94% | 1258.7356 | −5.78% | 1973.2406 | −0.97% |
500.7897 | −12.32% | 1337.7123 | −5.63% | 2056.0031 | 0.72% |
569.4314 | 5.71% | 1472.2932 | −8.39% | 2148.2125 | −6.63% |
658.2227 | 5.11% | 1513.4778 | −1.80% | 2210.2138 | 3.66% |
706.4791 | 5.62% | 1552.1245 | −8.57% | 2328.5594 | 7.02% |
785.4862 | −11.08% | 1593.023 | −12.25% | 2394.4765 | 3.48% |
826.5563 | −5.36% | 1632.6447 | 10.85% | 2606.0386 | 6.09% |
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Wang, P.; Li, J.; Wang, M.; Hu, J.; Zhang, F. Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River. Sustainability 2022, 14, 9798. https://doi.org/10.3390/su14169798
Wang P, Li J, Wang M, Hu J, Zhang F. Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River. Sustainability. 2022; 14(16):9798. https://doi.org/10.3390/su14169798
Chicago/Turabian StyleWang, Pingyi, Jian Li, Meili Wang, Jielong Hu, and Fan Zhang. 2022. "Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River" Sustainability 14, no. 16: 9798. https://doi.org/10.3390/su14169798