FIELD: transport engineering. SUBSTANCE: method involves pumping liquid under pressure on a sublayer of low-viscous medium with intermittent supply of compressed air into the beginning of the flow, and its periodical discharge throughout the path of the flow. The low-viscous liquid whose density is higher than that of the high-viscous liquid is injected periodically into the beginning of the flow. The flow rate of air in the low-viscous liquid has constant and pulsating components. The supply pulses of air and viscous liquid are synchronous and follow at the same frequency. EFFECT: higher efficiency. 2 dwg
