Method for preparing fluid with layered density

Abstract

The invention discloses a method for preparing fluid with a layered density. The method for preparing the fluid with the layered density can provide a simple and effective layering technology for ocean layered environmental laboratory simulation. According to the method for preparing the fluid with the layered density, the water outlet flow of a fresh water tank and the water outlet flow of a brine tank are controlled with an automatic control method; a mixer is arranged to enable brine and fresh water to be fully mixed; a booster pump is arranged to enable the brine and the fresh water to flow into a layered water pool at a controllable speed, so that layered fluid is formed; the opening degree of an electrically-operated valve is regulated with the PID technology, the rotating speed of the booster pump is regulated through a frequency converter, a dual-regulation method is formed, the flow of the brine and the flow of the fresh water are accurately controlled and are regulated according to a preset flow change rule, and thus a density layered section containing either a jumping layering curve or a linear layering curve is obtained. According to the method for preparing the fluid with the layered density, the layering time is controllable, equipment can be arranged easily, operation is convenient, and the application flexibility is high.

Description

technical field [0001] The invention relates to a method for simulating an ocean stratified environment, in particular to a method for simulating an ocean density stratified environment by using salinity distribution. Background technique [0002] Density vertical stratification due to temperature and salinity is a common phenomenon in the ocean. When the stratified ocean is disturbed, large-amplitude intra-ocean fluctuations, referred to as internal waves, are generated. Internal waves play an important dynamic role in the ocean and are an important carrier of energy and momentum vertical transmission. Internal waves can also affect or even destroy the performance of marine structures. Experimental research is an important basic research method of internal waves, and the simulation of ocean stratified environment is a prerequisite for internal wave experimental research. [0003] Because salt (NaCl) is soluble in water, cheap, slow to diffuse, and non-toxic, it is widely ...

AI Technical Summary

Problems solved by technology

The standard double-cylinder method is generally used to prepare stratified fluid. Because this method can obtain linear stratification, it has been widely used. However, the flow rate of this method depends on gravity, and the system configuration takes up a lot of space. If the stratified pool is large , requires two large water tanks with large volume (one salt water tank and one stirring water tank), and the stirring water tank should be flushed with fresh water in advance according to the linear stratification, and the stirring process should be kept stirring

In addition, any layered form that simulates the real ocean cannot be produced

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