A method to control the adhesion of bubbles to superaerophilic orbitals on vertical or inclined upper surfaces

Abstract

The invention discloses a method for controlling the adhesion of bubbles to a super-aerophilic orbit on a vertical or inclined upper surface. Under the condition of no energy input, the bubbles can be adhered to the super-aerophilic orbit as needed, specifically, in the super-aerophilic orbit. In the area near the wall of the gas track, arrange a certain angle α A superhydrophilic deflector inclined to the direction of gravity; when the bubble contacts the superhydrophilic deflector under the action of its own buoyancy or upward drag force, due to the superhydrophobicity of the superhydrophilic deflector, the bubble will move along the The super-hydrophilic deflector guides the movement until the bubbles are smoothly adsorbed on the super-aerophilic track and move along the super-aerophilic track; in the present invention, the bubbles are controlled to float along a straight line and the floating speed has no energy input, and only relies on the buoyancy of the bubbles itself. The drag force and the wall adhesion force are used to control the floating trajectory of the bubbles. The invention has strong applicability, and adjusting the curvature of the super-hydrophilic baffle can be used for bubbles of different sizes, so as to achieve the purpose of controlling the floating of different bubbles.

Description

technical field [0001] The invention relates to the control of bubble movement in water or an aqueous solution, and belongs to the technical field of multiphase flow and energy saving. Background technique [0002] The movement of bubbles in liquid is a typical problem in gas-liquid two-phase flow, and gas-liquid two-phase flow is a research hotspot in current multiphase flow research and engineering applications. When the bubbles move in the liquid, they will be affected by buoyancy, gravity and other forces. These forces make the bubbles move in the liquid and disturb the flow field, which in turn acts on the bubbles. The movement in the liquid is very complex, which makes the upward trajectory of the bubble in the liquid difficult to control. [0003] Discrete bubble two-phase flow is widely used in engineering equipment and technical fields such as petrochemical, energy, shipbuilding, sewage treatment, etc. The manipulation of rising bubbles in liquid fluids has importa...

AI Technical Summary

Problems solved by technology

When the bubbles move in the liquid, they will be affected by buoyancy, gravity and other forces. These forces make the bubbles move in the liquid and disturb the flow field, and the flow field reacts on the bubbles. The bubbles are disturbed by the flow field, making them flow in the liquid The movement in is very complicated, which makes it difficult to control the rising trajectory of the bubble in the liquid

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