160 citations · 442 across the 19 of their papers we have counts for
19 papers
Evaporation of initially heated sessile droplets and the resultant dried colloidal deposits on substrates held at ambient temperature
Sanghamitro Chatterjee, Manish Kumar, Janani S Murallidharan +1
The present study experimentally and numerically investigates the evaporation and resultant patterns of dried deposits of aqueous colloidal sessile droplets, when the droplets are…
Colloidal Deposit of an Evaporating Sessile Droplet on a Non-uniformly Heated Substrate
Laxman K. Malla, Rajneesh Bhardwaj, Adrian Neild
The pattern and profile of a dried colloidal deposit formed after evaporation of a sessile water droplet containing polystyrene particles on a non-uniformly heated glass are invest…
A Combined Computational and Experimental Investigation on Evaporation of a Sessile Water Droplet on a Heated Hydrophilic Substrate
Manish Kumar, Rajneesh Bhardwaj
We numerically and experimentally investigate evaporation of a sessile droplet on a heated substrate. We develop a finite element (FE) model in two-dimensional axisymmetric coordin…
Analysis of Profile and Morphology of Colloidal Deposits obtained from Evaporating Sessile Droplets
Laxman K. Malla, Rajneesh Bhardwaj, Adrian Neild
We experimentally investigate the profile and morphology of the ring-like deposits obtained after evaporation of a sessile water droplet containing polystyrene colloidal particles…
Recent Developments on Colloidal Deposits Obtained by Evaporation of Sessile Droplets on a Solid Surface
Nagesh D. Patil, Rajneesh Bhardwaj
Understanding flow patterns and coupled transport phenomena during evaporation of droplets loaded with colloidal particles is central to design technical applications such as organ…
Analysis of an Evaporating Sessile Droplet on a Non-Wetted Surface
Rajneesh Bhardwaj
We investigate evaporation of a sessile droplet on a non-wetted surface in the framework of diffusion-limited and quasi-steady evaporation. We extend previous models and numericall…
Self-sorting of Bi-dispersed Colloidal Particles near Contact Line of an Evaporating Sessile Droplet
Nagesh D. Patil, Rajneesh Bhardwaj, Atul Sharma
We investigate deposit patterns and associated morphology formed after the evaporation of an aqueous droplet containing mono- and bi-dispersed colloidal particles. In particular, t…
Harnessing Electrical Power from Vortex-Induced Vibration of a Circular Cylinder
Atul Kumar Soti, Mark C. Thompson, John Sheridan +1
The generation of electrical power from Vortex-Induced Vibration (VIV) of a cylinder is investigated numerically. The cylinder is free to oscillate in the direction transverse to t…
Role of Skin Friction Drag during Flow-Induced Reconfiguration of a Flexible Thin Plate
Awan Bhati, Rajat Sawanni, Kaushik Kulkarni +1
We investigate drag reduction due to the flow-induced reconfiguration of a flexible thin plate in presence of skin friction drag at low Reynolds Number. The plate is subjected to a…
Droplet Bouncing and Breakup during Impact on Microgrooved Surface
Laxman K. Malla, Nagesh D. Patil, Rajneesh Bhardwaj +1
We experimentally investigate impact dynamics of a microliter water droplet on a hydrophobic microgrooved surface. The surface is fabricated using photolithography and high-speed v…
A Fluid-Structure Interaction Solver for Compressible Flows with Applications in Blast Loading on Thin Elastic Structures
Shantanu Bailoor, Aditya Annangi, Jung Hee Seo +1
We report development and application of a fluid-structure interaction (FSI) solver for compressible flows with large-scale flow-induced deformation of the structure. The FSI solve…
The Response of an Elastic Splitter Plate Attached to a Cylinder to Laminar Pulsatile Flow
Anup Kundu, Atul K. Soti, Rajneesh Bhardwaj +1
The flow-induced deformation of a thin, elastic splitter plate attached to the rear of a circular cylinder and subjected to laminar pulsatile inflow is investigated. The cylinder a…
Effects of Substrate Heating and Wettability on Evaporation Dynamics and Deposition Patterns for a Sessile Water Droplet Containing Colloidal Particles
Nagesh D. Patil, Prathamesh G. Bange, Rajneesh Bhardwaj +1
Effects of substrate temperature, substrate wettability and particles concentration are experimentally investigated for evaporation of a sessile water droplet containing colloidal…
Droplet Impact Dynamics on Micropillared Hydrophobic Surfaces
Nagesh D. Patil, Rajneesh Bhardwaj, Atul Sharma
The effect of pitch of the pillars and impact velocity are studied for the impact dynamics of a microliter water droplet on a micropillared hydrophobic surface. The results are pre…
Computational Study of Bouncing and Non-bouncing Droplets Impacting on Superhydrophobic Surfaces
Prathamesh G. Bange, Rajneesh Bhardwaj
We numerically investigate bouncing and non-bouncing of droplets during isothermal impact on superhydrophobic surfaces. An in-house, experimentally-validated, finite-element method…
Numerical study of Heat Transfer Enhancement by Deformable Twin Plates in Laminar Heated Channel flow
Rakshitha U. Joshi, Atul K. Soti, Rajneesh Bhardwaj
Fluid-structure interaction (FSI) of thin flexible fins coupled with convective heat transfer has applications in energy harvesting and in understanding functioning of several biol…
Flow-Induced Deformation of a Flexible Thin Structure as Manifestation of Heat Transfer Enhancement
Atul Kumar Soti, Rajneesh Bhardwaj, John Sheridan
Flow-induced deformation of thin structures coupled with convective heat transfer has potential applications in energy harvesting and is important for understanding functioning of…
A numerical investigation on the influence of liquid properties and interfacial heat transfer during microdroplet deposition onto a glass substrate
Rajneesh Bhardwaj, Jon P. Longtin, Daniel Attinger
This work investigates the impingement of a liquid microdroplet onto a glass substrate at different temperatures. A finite-element model is applied to simulate the transient fluid…
Non-isothermal wetting during impact of millimeter size water drop on a flat substrate: numerical investigation and comparison with high-speed visualization experiments
Rajneesh Bhardwaj, Daniel Attinger
The objective of this work is to develop and validate a numerical model to study wetting during the impact of millimeter-size drops on a flat, smooth, solid substrate under isother…