Fluid Mechanics and Stability

Atomization: Break-up of thin liquid sheets

The process of atomization, which involves the break-up of a mass of liquid into tiny droplets, plays an important role in many industrial applications such as spray combustion, spray painting, agricultural sprays, ink jet printing, and powdered milk processing to name a few. One of the main objectives of the atomization process is to control the drop size distribution so as to achieve the desired process efficiently.  read more »

Proposing Faculty
Research Area
  • Coatings
  • Computational Flow Modelling (CFD)
  • Fluid Mechanics and Stability

Discrete Element Method (DEM) simulation for structure of fractal aggregates and their hydrodynamic properties

A simulation project for estimating mobility of nano-particle aggregates. These are looslely packed, non-spherical fluffy structures formed during processes such as synthesis of catalyst particles, transport of nano-particle slurries, transport of pollutants, etc..  read more »

Proposing Faculty
Research Area
  • Aerosols
  • Climate Change
  • Colloids
  • Computational Flow Modelling (CFD)
  • Fluid Mechanics and Stability
  • Molecular Simulations
  • Nanoparticles
  • Pollution
  • Reactor Modelling
  • Rheology

Jamming of Colloidal Suspensions

Pressure driven flows of colloidal suspensions through small openings often seal the constriction. Any further flow of fluid is blocked. Time taken for jamming and effectiveness of the seal depend on particle size, concentration, particle elastic modulus, etc.. The project will include experiments, modeling and/or simulations to understand this phenomenon.

Proposing Faculty
Research Area
  • Colloids
  • Fluid Mechanics and Stability
  • Porous Media
  • Rheology

Thin Film flow over topography

Many chemical engineering applications involve coating a substrate with a film of macroscopic thickness. Frequently such substrates are patterned which lead to perturbations on the coating flowing film. Most of the modelling studies use lubrication approximation to study these, neglecting inertial effects as a first approximation. The presence of a topographic pattern can lead to inertial effects becoming significant with the possibility of interactions between topographic and inertial effects. This project aims to understand the resultant instabilities on such thin films due to topography.  read more »

Proposing Faculty
Research Area
  • Coatings
  • Computational Flow Modelling (CFD)
  • Fluid Mechanics and Stability

Mathematical Analysis of Phoretic Motion

A suspension of colloidal particles can be subjected to various intermolecular forces that can lead to their mean motion, resulting in some intriguing macroscopic flows. This study will focus on the mathematical modelling and analysis, using semi-analytical and numerical methods to understand these flows.

Keywords: Diffusiophoresis, Electro-osmosis, Transport Phenomena, Computational Fluid Dynamics

Proposing Faculty
Research Area
  • Colloids
  • Computational Flow Modelling (CFD)
  • Electrohydrodynamics
  • Fluid Mechanics and Stability
  • Heat and Mass Transfer

Fluid flow on an inclined plane: Experiments and simulations (joint supervision with Prof. Partha S. Goswami)

Fluid flow on an inclined plane: Experiments and simulations (joint supervision with Prof. Partha S. Goswami)  read more »

Proposing Faculty
Research Area
  • Computational Flow Modelling (CFD)
  • Fluid Mechanics and Stability
Ratul Dasgupta
Venkat Gundabala

Micro Annular Gear Pump

gear pump.jpg

These micro annular pumps can maintain flow rates from 0.0015 to 1152 ml/min at differential pressures up to 150 Bar with attributes like low shear stress and reverse pumping. All types of liquids having viscosities between 0.3 and 1000,000 mPas can be passed through these pumps. It has an integrated 16-bit microcontroller for speed and position control for continuous and discrete dispensing tasks. Operating temperature ranges from -5 to 60 °C.  read more »

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