THE GROWTH AND DISSOLUTION PROCESS OF AIR BUBBLES IN THE LAMINAR-FLOW OF THE OPERATING LIQUID IN HYDRAULIC SYSTEMS

A survey of the methods for degasification of hydraulic fluids from hydraulic systems is given. Air bubbles may be generated in stationary fluids causing losses in hydraulic drives. When considering the development and liberation of air bubbles from a stationary liquid the equation for the convective diffusion in spherical co-ordinates is used for the distribution of the concentration of dissolved gas, assuming that the diffusion is a steady state process and that the gas concentration at the surface of the bubble is equal to an equilibrium concentration associated with a given pressure.