4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Tracking Of Swirl Bubbles Using High Speed Camera
Gas-liquid bubbly flow reactors are commonly used in chemical and bioprocess industries to enhance the mass transfer between the gas and liquid phases [1-3]. The gas-liquid bubble column has gained huge attention in research studies in recent years due to its complex hydrodynamics and its impact on transport process characteristics [4]. Gas-liquid bubbly flow forms when the gas is dispersed into the liquid phases. Generation of small bubbles and disseminating them consistently is essential to maximize the intensity of the mass transfer. Here an attempt has been made to determine the effect of swirl bubble injection on the hydrodynamics (bubble size, shape and velocity etc.) of air-water bubbly flow. The setup involves a 2D column, ring-type sparger and a digital high-speed camera. An image analysis software has been used to track multiple bubbles traveling in the column. To track each bubble for its shape, size and velocity, bubble’s initial position and others criterion are applied on the consecutive pictures. The results involve bubble properties with and without swirl gas injection and it has been inferred that by increasing the sparger rotation speed, bubble size is reduced due to increased shear and the bubble population has increased.
Keywords: bubbly flow, bubble, swirl flow

Ariny Demong, Ahmad Salam Farooqi, Khairuddin Sanaullah, Andrew Ragai Henry Rigit, Afrasyab Khan,