Role of horizontal crossflow on rotational induced-occurrences

Title : Role of horizontal crossflow on rotational induced-occurrences

Abstract:

Fluid entrainment is an intriguing and intricate phenomenon that is frequently seen in industrial operations and biological systems. Entrainment occurs when one fluid penetrates another, creating intriguing interfacial patterns. The Volume of Fluid (VOF) methodology is one of the most successful ways to precisely capture and analyse these interfacial dynamics. Within the framework of this study, we have concentrated on how the revolving solid roller and the additional effect of horizontal crossflow of the lighter medium affect the behaviour of film coating and air cusp entrainment dynamics in a viscous liquid pool. The Capillary number (Ca), the submergence ratio (S/D), the strength of horizontal crossflow (Reflow), the Archimedes number (Ar), the viscous drag (Morton number, Mo), and the roller speed (represented by the Capillary number, Ca) are some of the important parameters that are taken into consideration in this study when analysing the entrainment process. The characterization of key variables such as the liquid film thickness (h*), liquid cusp height (Ys*), air cusp width (H*), and depth of entrainment (θ*) is aided by these factors taken together. With the help of different combinations of Ca, and Reflow, we have examined the time development of the liquid tip movement in greater detail in this study and understand the transition from a receding to an advancing junction of the solid revolving roller. Additionally, the structure and dynamics of the cusp-shaped entrainment profile at the advancing junction, especially under the influence of horizontal crossflow, have been explored in detail. The underlying bubble dynamics have been clarified by investigating the disintegration bubbles from the parent steady entrained air filament into circular gas bubbles. The objective of this research is to give a thorough grasp of these phenomena, shedding light on the mechanics underlying fluid entrainment and their useful applications across a range of industries.

Biography:

Dr. Santosh Kumar Panda is an Assistant Professor in the Department of Mechanical Engineering at Atria Institute of Technology, an Autonomous Institution located in Hebbal, Bengaluru, Karnataka, India. He recently earned his Ph.D. from Kalinga Institute of Industrial Technology (KIIT) Deemed to be University (An Institute of Eminence), Bhubaneswar, Odisha, one of the leading universities in Asia. The primary research interests of Dr. Panda encompass Computational Fluid Dynamics (CFD), Multiphase Flow Dynamics, Interfacial flows, and Bubble Dynamics. His research in multiphase flow dynamics examines complex interactions between different phases in fluid systems. In bubble dynamics, he explores the behavior of bubbles in various mediums due to entrainment and its implications in industrial processes. His work in CFD focuses on simulating fluid behavior in gas-liquid interactions. Dr. Panda has published 11 prestigious research articles in SCI journals, including Physics of Fluids, ASME Journal of Fluid Engineering, Industrial & Engineering Chemistry Research, European Journal of Mechanics-B/Fluids, and 4 conference proceedings.