Slip boundary condition density flow and saline wedge generation experiment device and method

Abstract

The invention discloses a slip boundary condition density flow and saline wedge generation experiment device. The slip boundary condition density flow and saline wedge generation experiment device comprises an experimental water tank, a conveying floor, a fixing floor, a water guide tank, a low-density water storage tank, a high-density water storage tank, a removable rectifying device, a diversion device, a water inlet tank, an external drainage pipe, a level baffle, a water outlet, a scale, a cross calibration line, a control valve, a flowmeter, a filter, a small water pump and a mixer. Theslip boundary condition density flow and saline wedge generation experiment device can be applied to slip boundary condition density condition experiment, saline wedge generation experiment and traditional continuous inflow density flow experiment, can eliminate lobe-and-cleft phenomena in the head area during density flow diffusion to simplify three-dimensional motion into two-dimensional motionand facilitate phenomenon mechanism analysis, and meanwhile, lay an experimental foundation for complicated three-dimensional analysis and allow conversion to saline wedge conditions through simple operation. Besides, the slip boundary condition density flow and saline wedge generation experiment device is flexible in component combination design and wide in applicable condition range.

Description

technical field [0001] The invention relates to the field of hydraulic model tests of water conservancy projects, in particular to an experimental device and method for slip boundary condition density flow and salt water wedge generation. Background technique [0002] Density flow, also known as density flow, usually refers to the relative motion of two fluids with different densities due to the difference in density. There are many reasons for fluid density differences, such as fluid temperature differences, density differences caused by higher concentrations of soluble substances (salt, sugar, etc.) or suspended substances (mud, sand, etc.). The phenomenon of density flow exists widely in nature and in practical engineering. Since the 1930s and 1940s, density flow has gradually attracted attention. Scholars in different disciplines have carried out related research work, such as in fluid mechanics, meteorology, geology , environmental engineering, hydraulic engineering, e...

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Problems solved by technology

[0003] Among the published patent schemes, a variety of technical schemes of gate-opening and continuous inflow density flow test devices have been given at home and abroad; because the density flow diffusion process will form a distinct head area and tail area, but the head area It is the main area for mixing with environmental fluids (lobe-and-cleft and K-H billows phenomena), showing complex three-dimensional motion forms, which brings difficulties to experimental data processing and phenomenon analysis; at the same time, in the existing model test design, Few experimental setups have considered brine wedge generation

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