113 citations · 454 across the 19 of their papers we have counts for
20 papers
Numerical Insights on Controlled Droplet Formation in a Microfluidic Flow-Focusing Device
Somasekhara Goud Sontti, Arnab Atta
In this article, we have developed a computational model to determine the droplet formation regime and its transition in a square microfluidic flow-focusing device that eventually…
Formation characteristics of Taylor bubbles in power-law liquids flowing through a microfluidic co-flow device
Somasekhara Goud Sontti, Arnab Atta
Formation and dynamics of Taylor bubble in power-law liquids flowing through a circular co-flow microchannel are numerically investigated using coupled level set and volume-of-flui…
CFD study on Taylor bubble characteristics in Carreau-Yasuda shear thinning liquids
Somasekhara Goud Sontti, Arnab Atta
In the present study, Taylor bubble formation in two-phase gas-non-Newtonian Carreau liquid flowing through a confined co-flow microchannel is investigated. Systematic analysis are…
Enhanced accumulation of bitumen residue in a highly concentrated tailings flow by microbubbles from in-situ catalytic decomposition of hydrogen peroxide
Kaiyu Zhou, Somasekhara Goud Sontti, Joe Zhou +1
The massive volume of oil sands tailings has been one of the most challenging environmental issues. In this work, we experimentally explore a simple and effective approach to bitum…
Effects of Coal Particles on Microbubble-Enhanced Bitumen Separation in the Concentrated Slurry Flow of Oil Sands Tailings
Yiyi Huo, Mohammadhossein Golchin, Kaiyu Zhou +3
Our study investigates the segregation of bitumen residues within the transport pipeline before disposal in the presence of coal particles in carriers and microbubbles. Coal partic…
Understanding the Influence of Rheological Properties of Shear-Thinning Liquids on Segmented Flow in Microchannel using CLSVOF Based CFD Model
Somasekhara Goud Sontti, Pankaj G. Pallewar, Amritendu Bhuson Ghosh +1
In this study, two phase gas-shear-thinning liquid flow in a square microchannel is numerically investigated using the coupled level set and volume of fluid (CLSVOF) methods. A sys…
Regulation of droplet size and flow regime by geometrical confinement in a microfluidic flow-focusing device
Somasekhara Goud Sontti, Arnab Atta
We have developed a coupled level set and volume of fluid-based computational fluid dynamics model to analyze the droplet formation mechanism in a square flow-focusing microchannel…
CFD analysis of microfluidic droplet formation in non-Newtonian liquid
Somasekhara Goud Sontti, Arnab Atta
A three-dimensional, volume-of-fluid (VOF) based CFD model is presented to investigate droplet formation in a microfluidic T-junction. Genesis of Newtonian droplets in non-Newtonia…
CFD Analysis of Taylor Bubble in a Co-Flow Microchannel with Newtonian and Non-Newtonian Liquid
Somasekhara Goud Sontti, Arnab Atta
We present a CFD based model to understand the Taylor bubble behavior in Newtonian and non-Newtonian liquids flowing through a confined co-flow microchannel. Systematic investigati…
High-throughput controlled droplets generation through a flow-focusing microchannel in shear-thinning fluids
Manohar Jammula, Somasekhara Goud Sontti
This study presents a three-dimensional transient computational fluid dynamics simulation of droplet generation in a flow-focusing microfluidic device using the Coupled Level Set a…
Numerical analysis of controlled droplet formation surrounded by shear-thinning fluid in a co-flow microfluidic device
Manohar Jammula, Somasekhara Goud Sontti
In this work, we used a coupled level set and volume of fluid (CLSVOF) computational method for studying the generation of microdroplets in a two dimensional circular co-flow micro…
Numerical investigation on solids settling in a non-Newtonian slurry inside a horizontal flume
Shubham Sharma, Somasekhara Goud Sontti, Wenming Zhang +2
Slurry transportation is always crucial for many industrial processes. This study numerically investigates the settling behavior of multisize solid particles in a non-newtonian slu…
Impacts of flow velocity and microbubbles on water flushing in a horizontal pipeline
Mohammadhossein Golchin, Siyu Chen, Shubham Sharma +5
Water flushing to remove particle sediment is essential for safe and continuous transport of many industrial slurries through pipelines. An efficient flushing strategy may reduce w…
Numerical insights from population balance model into the distribution of bitumen residues in industrial horizontal pipes during the hydrotransport of oil sands tailings
Somasekhara Goud Sontti, Xuehua Zhang
Pipeline transportation is a vital method for conveying crushed oil sand ores and tailings in the oil sands industry. This study focuses on enhancing economic benefits by exploring…
Review of microscale dynamics of dilution-induced asphaltene precipitation under controlled mixing conditions
Jia Meng, Somasekhara Goud Sontti, Xuehua Zhang
As the most complex and heaviest component in bitumen, asphaltene precipitation induced by solvent dilution is important in oil sands extraction to remove solids and water from bit…
Ultrasensitive Surface-Enhanced Raman Spectroscopy Detection by Porous Silver Supraparticles from Self-Lubricating Drop Evaporation
Tulsi Satyavir Dabodiya, Somasekhara Goud Sontti, Zixiang Wei +4
This work demonstrates an original and ultrasensitive approach for surface-enhanced Raman spectroscopy (SERS) detection based on evaporation of self-lubricating drops containing si…
Computational fluid dynamics investigation of bitumen residues in oil sands tailings transport in an industrial horizontal pipe
Somasekhara Goud Sontti, Mohsen Sadeghi, Kaiyu Zhou +2
Bitumen residues in the oil sand tailings can be a threat to the environment that separating them from tailings before disposal is crucial. However, low bitumen concentration in th…
Asphaltene precipitation under controlled mixing conditions in a microchamber
Jia Meng, Chiranjeevi Kanike, Somasekhara Goud Sontti +3
Solvent exchange is a controlled process for dilution-induced phase separation. This work utilizes the solvent exchange method to reveal the effect of the mixing dynamics on the as…
Computational fluid dynamics (CFD) simulation of three-phase non-Newtonian slurry flows in industrial horizontal pipelines
Mohsen Sadeghi, Somasekhara Goud Sontti, Enzu Zheng +1
Understanding the flow behavior of complex concentrated slurries is of tremendous importance for industrial waste management. In this study, the transport of three-phase oil sands…
Size distribution of primary submicron particles and larger aggregates in solvent induced asphaltene precipitation
Jia Meng, Somasekhara Goud Sontti, Mohsen Sadeghi +4
Asphaltene precipitation is a crucial phase separation phenomenon in the oil industry, especially in paraffinic froth treatment to extract bitumen from oil sands ores. This work re…