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Chemical Engineering

Animangsu Ghatak, PhD (Lehigh University)

Associate Professor

Research Interests: Adhesion and friction on soft interfaces, Fracture of soft thin sheets, Bio-inspired approaches in design of engineering materials
Email: aghatak[AT]iitk.ac.in
Ph: +91-512-259-7146
Website: http://home.iitk.ac.in/~aghatak/

Highly deformable, soft elastic, viscoelastic and poroelastic materials occur in many different applications e.g. soft tissues, artificial organs, therapeutic patches, shock absorbers, dampeners, platforms for micro-fluidic device, novel biomaterials in biology as stems, roots and leaves, sponges, cartilage layers and bones and so on and so forth. In this variety of situations these materials are exposed to many different forms of mechanical loads, e.g. tension, compression, torsion, bending which, due to the large deformability of these materials and their complex rheological character, can generate such responses which are different from that commonly observed with the liner elastic systems. An example of such a response is the kinking instability which occurs in a cylindrical rod of soft hydrogel when it is bent beyond a critical curvature. It is different from the commonly observed wrinkling instability in thin, soft films or blocks. In our laboratory we study these materials and associated phenomena in the context of adhesion, friction, fracture and failure.

Jayant K. Singh, PhD (Buffalo University - SUNY)

Associate Professor

Research Interests: Thermodynamics, Selective adsorption and separation, Energy storage materials, Wetting transition, Self assembly and crystallization at nanoscale. 
Ph: +91-512-259- 6141
Email: jayantks[AT]iitk.ac.in
Website: http://home.iitk.ac.in/~jayantks
Our focus is to predict the structure, stability and dynamics of various fluids and their mixtures. In particular our interest is to apply and develop molecular simulation methodologies for bulk and confined fluids. To understand the phenomena at interfaces (for example, effect of reactive polymer on the interface adhesion of two immiscible polymers, orientation of solute particles at interface of associating fluids, water-air phase behavior under hydrophobic/hydrophilic surfaces etc) of pure and mixtures of fluids, we apply and develop methodologies within the framework of Molecular Dynamics, Monte Carlo Techniques, Dissipative Particle Dynamics and Brownian Dynamics. In this regard we have recently developed methods for estimating virial coefficient, free energy, pressure and interfacial tension.

Naveen Tiwari, PhD ( U of Massachusetts Amherst-USA)

Associate Professor

Research Interests: Transport Phenomena,Instabilities in micro-scale free surface flows, Flow through porous media.
Ph:  +91-512-259-6751 (o)
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it.
Website: http://www.iitk.ac.in/che/nt.htm
My research interest is in transport phenomena at small length scales. Current research work is primarily focused on the instabilities in driven micro-scale free surface flows over heterogeneous surfaces. The wetted face of the solid substrate can have heterogeneities such as non-uniform temperature, topographical variations, solid-liquid interactions and so on. These heterogeneities lead to fascinating behavior of the free surface of the thin liquid film. Understanding of the dynamics and instability of such thin liquid film flows can be critical for micro- and nano-applications. Theoretical and computational work is on-going to better understand the dynamics of such flows.

V.Shankar, PhD (IISc Bangalore)

Associate Professor

Research Interests: Stability of fluid flows, Rheology of complex fluids 
Ph: +91-512- 259- 7377
Email: vshankar[AT]iitk.ac.in
Website: http://home.iitk.ac.in/~vshankar/
Research in our group is centered around the areas of fluid dynamics, rheology, transport and interfacial phenomena with a focus on microfluidic systems, biological flows, and meso-patterning applications. Specifically, we address issues related to hydrodynamic instabilities and their manipulation in these settings, for example, as a way to improve transport rates or as a precursor to formation of meso-scale patterns. We use a combination of analytic theory, numerical simulations and experimental observations in our research. Recent results from our group include a comprehensive study of instabilities in deformable tubes and rectangular channels, which have uncovered a host of new instabilities which are absent in rigid tubes and channels. Such instabilities could be potentially exploited in microfluidic devices for improving mixing. We use the spectral method extensively to determine the stability boundaries, and back this up with analytical calculations using asymptotic analyses in particular regimes. More information, including reprints of publications from our group can be found in http://home.iitk.ac.in/~vshankar


Abhishek(U of Maryland, College Park)

Assistant Professor

Research Interests: Rotary wing aeromechanics, hover capable micro air vehicles,  multibody dynamics, inverse flight dynamics simulation, CFD/CSD  coupled analysis.
Email: abhish[AT]iitk.ac.in
Ph: +91-512-259-7515 (O)
Website: http://home.iitk.ac.in/~abhish
We at Autonomous Mini Helicopter Lab are interested in comprehensive rotorcraft analysis, prediction of helicopter blade loads in severe maneuvers, inverse flight dynamics simulation, which involves the estimation of control angles to simulate a particular maneuver. Further we are involved in design and analysis of hover capable rotary wing Micro Air Vehicles and UAVs. We are also fascinated with Unconventional VTOL/STOL systems, variable speed helicopters and wind turbines.

Ashoke De (Louisiana State)

Assistant Professor

Research Interests: CFD, Turbulent combustion, Turbulent flows in Gas turbines, Hydrogen  combustion, Stochastic PDF based combustion modeling, High speed aerodynamics, High performance computing.
Email: ashoke[AT]iitk.ac.in
Ph:  +91-512-259-7863 (O) / +91-512-2598301 (R)
Website:  http://home.iitk.ac.in/~ashoke
I am interested in numerical research related to the field of Combustion and Gas turbines with an emphasis on modeling of turbulent premixed and non-premixed combustion, Simulation of turbulent flows using RANS, LES and DNS, high pressure combustion , hydrogen combustion,monte Carlo Probability Density Function(PDF) based modeling, High speed aerodynamics, Combustion model development, High performance computing.

C. Venkatesan, PhD (IISc Bangalore)

Professor & Former Head

Research Interests: Helicopter Dynamics and Aeroelasticity.
Email: cven[AT]iitk.ac.in
Ph: +91-512-2597284 (O) / +91-512-2598466 (R)
Website :http://home.iitk.ac.in/~cven
The broad areas of my research are Aeroelasticity, Aircraft Structures, Aircraft Design - II (Structural Design), Dynamics and Vibration, Helicopter Theory - Dynamics and Aeroelasticity, Introduction to the Theory of Smart Structures and Theory of Vibration.

C.S. Upadhyay, PhD (Texas A&M)

Professor

Research Interests: Solid Mechanics, Adaptive Finite Element Methods, Structural Optimization
Email: shekhar[AT]iitk.ac.in
Ph: +91-512-2597936 (O)
Website: http://home.iitk.ac.in/~shekhar
The broad areas of my research are Advanced Finite Element Analysis, Hierarchical modeling approaches, Multi-scale continuum damage modeling for laminated composites, Non linear electro-thermo-mechanical modeling of piezo-electric materials, Stochastic analysis.

Debopam Das, PhD (IISc Bangalore)

Associate Professor

Research Interests: Theoretical and Experimental Fluid Dynamics, Aeroacoustics, Instability & transition, Vortex Dynamics. Unsteady Aerodynamics, Birds’s and Insect’s Flight.
Email: das[AT]iitk.ac.in
Ph: +91-512-259-7227 (O)
Website: http://home.iitk.ac.in/~das

I work on Aeroacoustics of supersonic vortices during evolution and interaction, Flapping wing aerodynamics, Fire propagation in confined spaces,  Analytical and experimental studies of unsteady pipe flow, Impinging jet flow studies for GSLV MK-III. Flow and acoustic field during initial startup, interaction with the reflected shock and interaction with the deflector and  Compressible vortex rings.

P.M. Mohite, PhD (IIT Kanpur)

Assistant Professor 

Research Interests: Damage Mechanics of Laminated Composites, Composites, Finite Element Analysis
Email: mohite[AT]iitk.ac.in
Ph: +91-512-259-6024 (O)
Website: http://home.iitk.ac.in/~mohite
Currently, we are developing micro-mechanics based models for the prediction and propagation of intralaminar damage mechanisms (like fibre breaking, fibre-matrix debonding, matrix cracking etc) along with interlaminar damage mechanism (delamination) for polymer matrix composite under quasi-static and dynamic loading. The model developed will be used to predict the fatigue life of composite structures. Measurement of fibre, matrix, lamina and laminate properties: We are also creating data bank for glass and carbon fibres mechanical and damage properties by single fibre tests. Similar properties are also measured for epoxy matrices. Further, effective mechanical and strength/damage properties are measured for various types of composites with above fibre/matrix systems. Adaptive finite element modeling: We are developing various plate models for laminate analysis to accurately predict the damage initiation and propagation until final fracture. The emphasis is to do a refined adaptive FE analysis for these damages with both discretization and modeling error estimation and control. Further, we model the damage mechanisms in commercial FEM software, Abaqus through UMAT subroutines.

Rajesh Kitey, PhD (Auburn University)

Assistant Professor

Research Interests: Solid Mechanics, Fracture Mechanics, Experimental Stress Analysis, Optical Metrology, Mechanics of Thin Films, Composite Materials, Finite Element and Boundary Element Methods
E-mail: kitey[AT]iitk.ac.in
Ph: +91-512-259-7060 (O)
Website: http://home.iitk.ac.in/~kitey
The interfacial properties, in particular interfacial adhesion and interfacial fracture toughness govern the mechanical integrity of thin film devices, inevitably subjected to repeated thermo mechanical loading while in operation. The laser spallation method proves better than contemporary interfacial strength characterization techniques due to its ability to dynamically load the interface in non-contacting fashion by employing short duration laser induced stress pulses (at strain rate ~ 107). The laser spallation setup will be installed to measure tensile and mixed-mode interfacial strength in thin film specimens, fabricated using polymer, low-k, metallic and ceramic films. The reliability testing and analysis will be conducted on multilayer thin film equipments such as solar cells, microelectronics devices, and MEMS and NEMS devices.