| Abstract: | Conclusions 1. A decrease in flow rate is observed upon increase in the pressure drop between the ends of a capillary at large pressure drops in the unstable flow region.2. It has been ascertained that the radial distribution of mean lengthwise velocity has an inflection close to the capillary wall.3. Wall slippage of the polymer has been observed and measured.4. A correlation of velocity pulsations in the channel with disturbances in the jet has been established.Institute of Problems of Mechanics, Academy of Sciences of the USSR, Moscow. Moscow Power Institute. Translated from Mekhanika Polimerov, No. 4, pp. 724–730, July–August, 1976. |
