April 2025:

No openings for summer internship. 

April 2025 

Open position for a Ph.D. student:

Particle Image Velocimetry (PIV) measurements of fluid flow inside droplets

Impact and evaporation of a droplet of a pure liquid or colloidal suspension on a solid surface has potential applications in spray cooling, inkjet printing, manufacturing of bio-assays. The objective of this project is to measure fluid flow inside droplets using newly installed PIV facility in our lab. This will allow to understand coupling of fluid dynamics with other transport phenomena, such as heat transfer and mass transfer during the impact and evaporation of a droplet on a solid surface. In presence of colloidal particles in the droplet, the coupling of such transport phenomena is interwoven with particles transport. Several measurements techniques (such as infrared thermography, micorscopy, profilometry etc) will be combined in order to understand coupled physics. Reduced order modeling will be utilized to corroborate the measurements.

Our lab is currently investigating two broad areas, namely

• Droplets / Interfaces

• Fluid-Structure Interaction (FSI) / CFD

The sub-topics (included but not limited to) in these areas are also listed below. We use state-of-the-art computational and experimental techniques for our research.

Droplets / interfaces

• Droplet impact and evaporation on solid surfaces

• Designing bioinspired microtextured surfaces, Bouncing droplets

• "Coffee-ring" colloidal deposits

• Colloidal particles sorting via evaporating droplets

• Dynamic wetting at contact line

Fluid-structure interaction (FSI) / CFD

• Computational techniques in FSI, Immersed boundary method

• Flapping/Pitching thin plates for thrust generation

• Vortex Induced Vibration

• Energy harvesting and heat transfer augmentation via FSI

• Drag reduction by flow-induced reconfiguration

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Contact us: Prof. Rajneesh Bhardwaj, Room S36 (second floor) Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India. e-mail: rajneesh.bhardwaj [AT] iitb.ac.in