Slug flow is a liquid–gas two-phase flow in which the gas phase exists as large bubbles separated by liquid "slugs". Pressure oscillations within piping can be caused by slug flow.
References
Slug flow Wikipedia(Text) CC BY-SA
Slug flow is a liquid–gas two-phase flow in which the gas phase exists as large bubbles separated by liquid "slugs". Pressure oscillations within piping can be caused by slug flow.