Indian Academy of Sciences’ Summer Research Fellowship Programme 2018

Project Title: Heat/mass transfer from a drop in a general linear flow

Advisor: Dr Ganesh Subramanian

Host Institute: Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru, India.

Description: The transport rate from a spherical drop immersed in a general linear flow in creeping flow conditions was studied. Enhancement in the transport rate was demonstrated at high Peclet numbers in presence of Lagrangian chaos.

Methodology: Langevin dynamic simulations were performed using Brownian tracer particles.

Ludwig Prandtl Internship 2019

Project Title: Flow in an evaporating two-component Marangoni contracted sessile droplet

Advisor: Dr. Stefan Karpitschka

Host Institute: Max Planck Institute for Dynamics and Self-Organisation (MPIDS), Göttingen, Germany.

Description: The internal flows of a Marangoni-contracted droplet was probed using Particle Image Velocimetry (PIV). The obtained velocity profile was compared to simulated results obtained from a hydrodynamic model.

Methodology: Experimental investigation was performed using solutions of ethylene glycol and water and 1, 2- butanediol and water over piranha-cleaned glass slides. PIV videos were recorded using a water immersed high-speed camera at different planes to capture the velocity profile.

B.Tech Project Thesis (2019-2020)

Project Title: Sandwiched droplet in a confined simple shear flow

Advisor: Dr Suman Chakraborty

Host Institute: Indian Institute of Technology (IIT), Kharagpur, India.

Description: The morphological evolution and breakup dynamics of sandwiched droplets in a confined simple shear flow were studied. The shape evolution with time, effects of wettability, breakup modes and the pinch-off times were reported.

Methodology: Numerical simulations were performed using a diffused interface model in COMSOL Multiphysics.

Research Project (2017-2019)

Thermal and Fluid Sciences:

• Basic: Fluid Mechanics, Introduction to Aerodynamics, Low-Speed Aerodynamics, Thermodynamics, Heat Transfer, IC Engines and Refrigeration, Convective Heat and Mass Transfer, Turbomachinery and Powerplant Engineering, 

• Advanced: Microfluidics, Statistical and Irreversible Thermodynamics, Two-Phase flows, Advanced Fluid Mechanics, Multiphase Flows, Microscale Transport Phenomenon

Mathematics and Computing: 

• Freshman Mathematics, Transform Calculus, Partial Differential Equations, Programming and Data Structures (using C), Soft Computing, Operations Research, Finite Element Methods, High-Performance Scientific Computing, Boundary Integral Methods, Computational Fluid Mechanics