112 citations · 422 across the 25 of their papers we have counts for
21 papers · 1 filter
Alterations in electroosmotic slip velocity: combined effect of viscoelasticity and surface potential undulation
Bimalendu Mahapatra, Aditya Bandopadhyay
In computational models of microchannel flows, the Helmholtz-Smoluchowski slip velocity boundary condition is often used because it approximates the motion of the electric double l…
Experimental investigations on geometry modulated solute mixing in viscoelastic media
Bimalendu Mahapatra, Aditya Bandopadhyay
In this study, geometrically modified microchannels fabricated using stereolithography technique are employed to analyze micromixing of polymeric solutions. Experimental and numeri…
Controlling the electrostatic Faraday instability using superposed electric fields
Sebastian Dehe, Maximilian Hartmann, Aditya Bandopadhyay +1
When the interface between a dielectric and a conducting liquid is excited by an oscillatory electric field, electrostatic Faraday waves can be induced. Here, we study the response…
The spatial structure of electrostatically forced Faraday waves
S. Dehe, M. Hartmann, A. Bandopadhyay +1
The instability of the interface between a dielectric and a conducting liquid, excited by a spatially homogeneous interface-normal time-periodic electric field, is studied based on…
Steering a thermally activated micromotor with a nearby isothermal wall
Antarip Poddar, Aditya Bandopadhyay, Suman Chakraborty
Selective heating of a microparticle surface had been observed to cause its autonomous movement in a fluid medium due to self-generated temperature gradients. In this work, we theo…
Signature of coalescence during scalar mixing in a Rankine vortex
Sabyasachi Sen, Prajwal, Joris Heyman +2
We analyze the dynamics of solute mixing in a vortex flow. The transport of a passive tracer is considered in a Rankine vortex. The action of a shear flow, in general, is to achiev…
Universality in coalescence of polymeric fluid drops
Sarath Chandra Varma, Siddhartha Mukherjee, Aniruddha Saha +3
Coalescence of liquid droplets involves an interplay between capillary forces, viscous forces and inertial forces. Here, we unveil a universal temporal evolution of the neck radius…
Electrorheology of a dilute emulsion of surfactant-covered drops
Antarip Poddar, Shubhadeep Mandal, Aditya Bandopadhyay +1
The effects of surfactant coating on a deformable viscous drop under the combined action of a shear flow and a uniform electric field, are investigated by solving the coupled equat…
Auto-electrophoresis in non-Newtonian media: interaction of rheology and electrocatalytic parameters
Antarip Poddar, Aditya Bandopadhyay, Suman Chakraborty
Recent findings of possible applications of bio-friendly synthetic self-phoretic swimmers, have motivated the researchers in investigating the various motion-generating mechanisms…
Electrohydrodynamic migration of a surfactant-coated deformable drop in Poiseuielle flow
Antarip Poddar, Shubhadeep Mandal, Aditya Bandopadhyay +1
In this study we attempt to explore the consequences of surfactant coating on the electrohydrodynamic manipulation of a drop motion in a plane Poiseuielle flow. In addition we cons…
Electric field-induced droplet deflection in microconfined flow
Somnath Santra, Shubhadeep Mandal, Aditya Bandopadhyay +1
The deflection of liquid droplet driven through a liquid medium under the combined action of transverse electric field and pressure driven flow has been studied in the present anal…
Sedimentation of a surfactant-laden drop under the influence of an electric field
Antarip Poddar, Shubhadeep Mandal, Aditya Bandopadhyay +1
The sedimentation of a surfactant-laden deformable viscous drop acted upon by an electric field is considered theoretically. The convection of surfactants in conjunction with the t…
Stability of a horizontal viscous fluid layer in a vertical time periodic electric field
Aditya Bandopadhyay, Steffen Hardt
The stability of a horizontal interface between two viscous fluids, one of which is conducting and the other is dielectric, acted upon by a vertical time-periodic electric field is…
Oscillations in a flexible channel flow of a generalized Newtonian fluid
Prakash Goswami, Aditya Bandopadhyay, Suman Chakraborty
We study the flow of a generalized Newtonian fluid, characterized by a power-law model, through a channel consisting of a wall with a flexible membrane under longitudinal tension.…
Reactive strip method for mixing and reaction in two dimensions
Aditya Bandopadhyay, Tanguy Le Borgne, Yves Méheust
A numerical method to efficiently solve for mixing and reaction of scalars in a two-dimensional flow field at large Péclet numbers but otherwise arbitrary Damköhler numbers is repo…
Enhanced reaction kinetics and reactive mixing scale dynamics in mixing fronts under shear flow for arbitrary Damköhler numbers
Aditya Bandopadhyay, Tanguy Le Borgne, Yves Méheust +1
Mixing fronts, where fluids of different chemical compositions mix with each other, are typically subjected to velocity gradients, ranging from the pore scale to the catchment scal…
Rheology modulated non-equilibrium fluctuations in time-dependent diffusion processes
Debonil Maity, Aditya Bandopadhyay, Suman Chakraborty
The effect of non-Newtonian rheology, manifested through a viscoelastic linearized Maxwell model, on the time-dependent non-equilibrium concentration fluctuations due to free diffu…
Wettability Modulated Charge Inversion and Ionic Transport in Nanofuidic Channels
Vaseem Akram Shaik, Aditya Bandopadhyay, Syed Sahil Hossain +1
We unveil the role of substrate wettability on the reversal in the sign of the interfacial charge distribution in a nanochannel in presence of multivalent ions. In sharp contrast t…
Electrohydrodynamic migration of a spherical drop in a general quadratic flow
Shubhadeep Mandal, Aditya Bandopadhyay, Suman Chakraborty
We investigate the motion of a spherical drop in a general quadratic flow acted upon by an arbitrarily oriented externally applied uniform electric field. The drop and media are co…
Uniform electric field induced lateral migration of a sedimenting drop
Aditya Bandopadhyay, Shubhadeep Mandal, Suman Chakraborty
We investigate the motion of a sedimenting spherical drop in the presence of an applied uniform electric field in an otherwise arbitrary direction in the limit of low surface charg…
The effect of interfacial slip on the motion and deformation of a droplet in an unbounded arbitrary Stokes flow
Shubhadeep Mandal, Aditya Bandopadhyay, Suman Chakraborty
The motion and deformation of a droplet suspended in an unbounded fluid with an arbitrary, but Stokesian, imposed flow is investigated when there is a slip at the interface between…