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  5. NFLUENCING OF HYDROPHYSICAL FACTORS ON THE FORMATION OF BUBBLES IN THE PROCESS OF WATER AERATION

NFLUENCING OF HYDROPHYSICAL FACTORS ON THE FORMATION OF BUBBLES IN THE PROCESS OF WATER AERATION

Section

Environmental Safety Construction and Town Economy

Title

INFLUENCING OF HYDROPHYSICAL FACTORS ON THE FORMATION OF BUBBLES IN THE PROCESS OF WATER AERATION

Сontributors

V. S. Borovkov, D. of Tech. Sc., Professor at the National Research Moscow State University

of Civil Engineering, This email address is being protected from spambots. You need JavaScript enabled to view it.,

I. E. Karaichev, Graduate Student at the National Research Moscow State University of Civil

Engineering, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

In the article discussed hydrophysical factors affecting the size of the formed bubbles in water when blowing air from a submerged nozzle. An attempt was made to determine the main forces acting on the bubble at the time of it separation from the nozzle. The problem solves in a dynamic formulation and includes the determination of the main acting forces, including the force of inertia of the “connected” mass of driven fluid, and the force of the hydrodynamic resistance during bubble growth. A comparative analysis is performed and an equation of the balance of the acting forces is compiled. A theoretical model is proposed for calculating the size of a bubble. A technique of determination describ and a demonstration calculating of bubbles size formed during the injection of air into the liquid from a flooded nozzle is made.

Keywords

injection of air into the liquid, air bubble, mass transfer, oxygen balance, bubble size, water- air mixture, aerator.

References

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