A rotating platform estuary plume test device and method

Abstract

The invention discloses a rotating platform estuary plume test device and method. The rotating platform estuary plume test device comprises a rotating platform, a first water supply system, a second water supply system and a PIV-PLIF synchronous measurement system, wherein the first water supply system, the second water supply system and the PIV-PLIF synchronous measurement system are carried on the rotating platform. The first water supply system comprises a top water tank and an experiment water tank, and saline water in the top water tank enters the experiment water tank through a drainagepipe; the second water supply system comprises an estuary assembly and multiple groups of fresh water supply devices, the estuary assembly is arranged in the experimental water tank, and the multiplegroups of fresh water supply devices pump fresh water containing PIV particles into the estuary assembly; and the PIV-PLIF synchronous measurement system is used for measuring a flow velocity field and a concentration field of the fluid in the experimental water tank. The device is novel in design, simple in structure, high in integrity, wide in applicable working condition and high in test precision; and the evolution process of the plume interaction of the estuary of the rotating platform under influence of different inflow speeds, inflow densities, Coriolis forces and estuary distances canbe simulated.

Description

technical field [0001] The embodiments of the present application relate to the field of offshore engineering fluid mechanics experiments, and in particular to a rotating platform estuary plume test device and method. Background technique [0002] The estuary plume (River Plume) is a water body with low salinity formed in the nearshore area after the river freshwater flows out of the estuary, and develops a unique nearshore flow field. It generally forms a seaward protruding bulge near the mouth of the river, and forms a coastal current downstream (relative to the propagation direction of the Kelvin wave). Estuarine plume plays a key role in the flow field in the offshore area, and the transport of nutrients, pollutants and sediment from land to sea, so it has become a research hotspot in recent decades. [0003] The estuary ecosystem is an important part of the marine ecosystem, with high productivity and rich resources, which provide a living place for aquatic organisms a...

AI Technical Summary

Problems solved by technology

Most of the rotating platform plume tests that have been carried out have the limitation of only considering the plume structure of a single estuary type, and the device model has many components and complex structures. Each test process needs to repeat experiments at different angles to scan the plume in different regions. The test cost is too high caused by the structure; at the same time, in the existing model test design, there is little consideration of the technical scheme of the plume flow process device under the coupling effect of the inflow velocity, inflow density, Coriolis force, and estuary distance.

Images