Experimental study on the mechanisms of every phase of the Chugging cycle in direct contact condensation.

Pressure pulses measured at two positions inside the pipe and synchronized with images from a high speed video camera.

Low pressure condition inside the bubble might be the cause of interfacial instability which generates the bubble collapse.

High pressure peaks characteristics of Chugging are caused by the condensation induced water hammer phenomena inside the pipe.

Creation of a chugging regime map based on collected data.