System and method for measuring turbulent long structure of open channel using river engineering model

Abstract

The invention discloses a system for using a river model to measure an open channel turbulence long structure. The system comprises a laser source transmitted by a laser transmitter, a reflector, a water supply and return device, tracer particle adding equipment, an image acquisition device, and a calculating and processing device. The laser transmitter is disposed on the outer side of a left river band sub-model or a right river bank sub-model. The laser transmitter is used for horizontally transmitting the laser source into a to-be-measured position of the river model. The reflector attaches to the outer wall of the one river bank sub-model opposite to the laser source. The reflector is used for allowing the reflected light plane and the incident light plane of the laser source to coincide. The water supply and return device is located at the inlet end of the river model. The tracer particle adding equipment is located at the inlet end of the water source of the river model and adds tracer particles into flowing water at a constant speed. The image acquisition device is disposed at the lower end of a river bed sub-model. The calculating and processing device is connected with the image acquisition device and used for analyzing and processing acquired images to obtain the open channel turbulence long structure. The invention further discloses a method for using the river model to measure the open channel turbulence long structure.

Description

technical field [0001] The invention relates to a measurement system and method, in particular to a system and method for measuring the turbulent long structure of an open channel by using a river engineering model. Background technique [0002] The river engineering model test is an important means of river research. It takes a representative section of the river as a prototype and scales it down to a certain scale to make a river model. Different river engineering models are used for different characteristics of the river, and then according to the actual river flow and sediment conditions, the water flow movement and sediment movement are reproduced on the river engineering model, thereby realizing the simulation of the actual river. Similar to the composition and structure of the actual river channel, the specific structure of the river engineering model can include a river bank sub-model and a river bed sub-model; It is usually located between two model side walls. At...

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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a system and method for measuring the turbulent long structure of an open channel by using a river engineering model, which can solve the problem of insufficient laser intensity and unfavorable tracking of water bodies due to the sinking of tracer particles. The problem

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