C. Sasmal
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Electro-Elastic Instability and Turbulence in Electro-osmotic Flows of Viscoelastic Fluids: Current Status and Future Directions Open
The addition of even minute amounts of solid polymers, measured in parts per million (ppm), into a simple Newtonian fluid like water significantly alters the flow behavior of the resulting polymer solutions due to the introduction of fluid…
The influence of non-Newtonian behaviors of blood on the hemodynamics past a bileaflet mechanical heart valve Open
This study employs extensive three-dimensional direct numerical simulations (DNS) to investigate the influence of blood non-Newtonian behaviors on the hemodynamics around a bileaflet mechanical heart valve under both steady inflow and phys…
Thermal convection of viscoelastic fluids in concentric rotating cylinders: Elastic turbulence and kinetic energy budget analysis Open
The introduction of solid polymers into a Newtonian solvent induces significant modifications in the flow behavior and heat transfer characteristics of resulting viscoelastic fluids. This study performs a comprehensive numerical investigat…
Strong effect of fluid rheology on electrokinetic instability and subsequent mixing phenomena in a microfluidic T-junction Open
When two fluids of different electrical conductivities are transported under the influence of an electric field, the electrokinetic instability (EKI) phenomenon often triggers in a microfluidic device once the electric field strength and c…
A detailed and systematic study on rheological and physicochemical properties of rhamnolipid biosurfactant solutions Open
Biosurfactants are widely used in many industrial settings ranging from cosmetic to petroleum industries. Among various biosurfactants available in the market, rhamnolipid is a well-known bacterial biosurfactant produced by the Pseudomonas…
Effect of geometric disorder on chaotic viscoelastic porous media flows Open
Many practical applications, such as enhanced oil recovery or groundwater remediation, encounter the flow of viscoelastic fluids in porous media. Once the flow rate exceeds a critical value in such flows, an elastic instability with a fluc…
Fluid viscoelasticity suppresses chaotic convection and mixing due to electrokinetic instability Open
When two fluids of different electrical conductivities are transported side by side in a microfluidic device under the influence of an electric field, an electrokinetic instability (EKI) is often generated after some critical values of the…
Flow dynamics of wormlike micellar solutions through a model porous media Open
The flow of viscoelastic wormlike micellar solutions (WLMs) in porous media is encountered in many practical applications like enhanced oil recovery or groundwater remediation. To understand the flow dynamics of these complex fluids in por…
Flow dynamics of wormlike micellar solutions through a model porous\n media Open
The flow of viscoelastic wormlike micellar solutions (WLMs) in porous media\nis encountered in many practical applications like enhanced oil recovery or\ngroundwater remediation. To understand the flow dynamics of these complex\nfluids in …
Effect of micelle breaking rate and wall slip on unsteady motion past a sphere translating in wormlike micellar solutions Open
In a recent numerical study, we have shown that the unsteady motion past a sphere translating steadily in a wormlike micellar solution is caused due to the breakage of long micelles downstream of the sphere once the Weissenberg number exce…
Unsteady motion past a sphere translating steadily in wormlike micellar solutions: a numerical analysis Open
Elastic instabilities and bifurcations in flows of wormlike micellar solutions past single and two vertically aligned microcylinders: Effect of blockage and gap ratios Open
This study presents an extensive numerical investigation on the flow characteristics of wormlike micellar solutions past a single and vertically aligned two microcylinders placed in a microchannel in the creeping flow regime on the two-spe…
Simulating the flow of semidilute polymer solutions Open
There are a number of contexts involving polymer solutions, such as in the spinning of nano-fibres or in inkjet printing, where in order to achieve the most optimal outcome, the concentration of polymers must not be too dilute or too conce…
Direct observation of DNA dynamics in semidilute solutions in extensional flow Open
The dynamic behavior of semidilute polymer solutions is governed by an interplay between solvent quality, concentration, molecular weight, and flow type. Semidilute solutions are characterized by large fluctuations in polymer concentration…