Pan, L.; Zhao, L.; Zhang, M.; Lai, Z. Experimental Study of the Hydrodynamics of an Open Channel with Algae Attached to the Side Wall. Water2023, 15, 2921.
Pan, L.; Zhao, L.; Zhang, M.; Lai, Z. Experimental Study of the Hydrodynamics of an Open Channel with Algae Attached to the Side Wall. Water 2023, 15, 2921.
Pan, L.; Zhao, L.; Zhang, M.; Lai, Z. Experimental Study of the Hydrodynamics of an Open Channel with Algae Attached to the Side Wall. Water2023, 15, 2921.
Pan, L.; Zhao, L.; Zhang, M.; Lai, Z. Experimental Study of the Hydrodynamics of an Open Channel with Algae Attached to the Side Wall. Water 2023, 15, 2921.
Abstract
The construction of large-scale water diversion projects alleviated effectively the current situa-tion of uneven distribution of water resources in China. However, due to the siltation of very fine sediment and organic matter on the side wall of the open channel, and the slow velocity of the side wall flow field, it is easy to produce epipelic algae, which affects water quality. For the prototype observation cannot be used to predict the series of flow in real time, and the mathe-matical model calculation is affected by parameter limitations, these two methods often cannot truly reflect the hydrodynamic characteristics of open channel with epipelic algae. Therefore, by referring to the design parameters of the water diversion project channel, this paper takes the epipelic algae growing on the side wall of the open channel as the research object, and uses the scale of 1:30 to carry out the generalized flume experiment. Through the analysis of the physical characteristics of the prototype sample, and the simulation of the cohesive force between the oblique side wall and the epipelic algae, the multi-group and multi-series hydrodynamic tests are carried out. The flow velocity distribution law and the development and change of the tur-bulent vortex on the side wall are analyzed. It has important scientific guiding significance and practical value for water quantity regulation water regulation and water quality safety protec-tion of long-distance projects.
Keywords
oblique side wall of open channel; epipelic algae; flume experiment; prototype observation
Subject
Environmental and Earth Sciences, Water Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
