Method for controlling free rising track and speed of bubble by using empennage

Abstract

The invention discloses a method for controlling the free rising track and speed of bubbles through an empennage. According to the invention, the empennage is composed of a main wing and a bubble attachment side wing, the included angle between the main wing and the bubble attachment side wing is theta, after bubbles are attached to the side wing, the empennage is driven to obliquely move upwards along a certain angle, and the ascending movement track form and the ascending speed of the bubbles are regulated and controlled by controlling the diameter of the bubbles, the shape of the empennage, the material of the empennage, the empennage aspect ratio k and the included angle theta; the empennage is easy and convenient to manufacture and low in cost, external energy input is not needed in practical application, and large-amplitude spontaneous transverse migration of the bubbles and control over the rising speed can be achieved only by means of buoyancy of the bubbles and the wall surface adhesive force of the side wing coating through empennage control; and different from a super-hydrophobic plane and a silk track, the degree of freedom of the bubbles is reserved to a certain extent by controlling bubble transportation through the empennage.

Description

technical field [0001] The invention relates to the fields of multiphase flow and hydrodynamics, in particular to a method for controlling the free rising trajectory and speed of air bubbles by using an empennage. Background technique [0002] The manipulation of air bubbles in liquid fluids plays an important role in mineral froth flotation, bubble reactors, sewage treatment, hydraulic drag reduction, microfluidics, microreactor technology, and biological cell incubation. For example, in froth flotation, the longer the residence time and movement history of the bubbles in the liquid phase are, the more favorable it is for mineral attachment and flotation; on the contrary, in microfluidic and heat exchange systems, the bubbles need to leave the liquid phase faster. Most of the bubble ships developed by using bubble technology are planing ships, which are a type of high-performance ship. Air and exhaust are introduced between the outer surface of the ship's hull and the water...

AI Technical Summary

Problems solved by technology

[0004] At present, in order to meet the stable control of the trajectory of the bubble, there have been studies on making super-aerophilic tracks on the plane and silk to control the rise of the bubbles, but the use of plane and silk tracks greatly limits the freedom of bubble movement, so in It is particularly important to realize the spontaneous transport of bubbles while controlling the trajectory of the bubbles

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