Apparatus and method for simulating and measuring drag forces on aquatic plants at different flow rates

Abstract

The invention provides an apparatus and method for simulating and measuring drag forces on aquatic plants at different flow rates. The apparatus comprises a speed regulating motor, a fixed rod, a traction rope and a pair of rails. The rails are arranged oppositely in parallel along the upper end of a water tank. Rollers matching the rails are arranged at the two ends of the fixed rod respectivelyand the fixed rod is erected between the rails vertically; the fixed rod and the speed regulating motor are connected by the traction rope parallel with the rails. A dynamometer is fixedly connected to the fixed rod; and a force-transmitting rod is fixedly connected to a measuring end below the dynamometer and is fixedly connected with a fixture. According to the apparatus, the influences of the hydrodynamic factors of the ecological restoration project can be determined well based on the calculated drag force parameter of the plant and thus the plant community configuration is optimized, so that the ecological restoration effect is improved. The apparatus is suitable for the aquatic plant ecology research and aquatic plant maintenance management practice. The apparatus has advantages of simple manufacturing method, great easiness in operation, high measurement precision and reliable data.

Description

technical field [0001] The invention belongs to the technical field of aquatic plant ecology research and aquatic plant ecological restoration, and specifically relates to a device and method capable of simulating and measuring the drag force borne by aquatic plants at different flow rates. Background technique [0002] Aquatic plants are an important part of the lake ecosystem and play an important role in maintaining the balance of the ecosystem and improving the water environment. The protection and reconstruction of aquatic plant communities is not only the key to maintaining "clear water" lakes, but also an important means to control lake eutrophication and improve water quality. Hydrodynamics is one of the limiting factors for plant restoration. After artificially restored plants are subjected to one or several strong winds and waves, the biomass of some species often decreases or even disappears (Gulati et al, 2008). Hydrodynamic damage to aquatic plants often occurs...

AI Technical Summary

Problems solved by technology

Correspondingly, plants with fluffy canopies and low toughness are difficult to form when they are scoured by water flow, so the hydrodynamic force forms a large drag on the plant body, which often leads to the loss of biomass of the plant body, or the loss of the whole plant. float upside down

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