Method for preparing fluid with layered density

A density layered, fluid technology, applied in fluid dynamics test, machine/structural component testing, instrument, etc., can solve the problem of occupying space, inability to obtain layered form, etc., to achieve high application flexibility, layered Time-controllable and easy-to-operate effects

Active Publication Date: 2014-06-18
中国船舶重工集团公司第七〇二研究所
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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 la

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  • Method for preparing fluid with layered density
  • Method for preparing fluid with layered density
  • Method for preparing fluid with layered density

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Embodiment Construction

[0018] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the density stratification system of the present invention consists of a salt water tank, a fresh water tank, a flow meter, an electric valve, a PID control device, a booster pump, a frequency converter, a mixer, a water injection device, a stratified water tank and connecting pipes. Flow meters are used to measure the flow of salt water and fresh water, and feed back to the PID control device in real time. The electric valve accepts the instruction of the PID control device, maintains a certain opening degree, and maintains a certain flow rate. The PID control device adjusts the opening of the electric valve in real time. The booster pump is the power source for fluid delivery, and the speed can be controlled by a frequency converter to adjust the flow. The frequency converter controls the speed of the b...

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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 ...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 姚明珠姚志崇赵文峰张军曹耀初施小勇张建华
Owner 中国船舶重工集团公司第七〇二研究所
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