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To investigate the impact of vegetation on the motion characteristics of porous jet flow, the Realizable κ-ε turbulence model was adopted to analyze the influence laws of the jet-cross-flow velocity ratio and jet spacing on the motion characteristics of the momentum jets arranged in series in vegetated river channels from the aspects of flow velocity distribution, vortex morphology and jet trajectory, respectively. The results show that vegetation inhibits the horizontal expansion of the jets and promotes their vertical spread. At low jet-to-crossflow velocity ratios, the front jet suppresses the vertical diffusion of the rear jet, while at high jet-to-crossflow velocity ratios, the shading effect of the front jet on the rear jet is significant, allowing the rear jet to diffuse to higher positions. This study can provide theoretical guidance for the design and optimization of wastewater discharge in vegetated channels.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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