Dr. Rajaram Lakkaraju

Department of Mechanical Engineering 

Indian Institute of Technology Kharagpur, West Bengal-721302, India


Phone: +91-3222-282908

Complex air-sea interactions and turbulence. Image credit to WHOI.

TuRbulent Interfaces And Dispersion (TRIAD

Turbulent transport phenomena involving interfaces are central to many industrial and environmental applications. For example, predicting mass and energy transfer between different phases affects the design of boilers, chemical reactors, combustion chambers, heat exchangers, wastewater treatment processes, and many others. Even in the case of natural processes like ocean-atmosphere interactions, Tsunamis, storms, and cyclones, turbulence at interfaces play a significant role. In such systems, the overall mass and energy transfer between the fluid phases depends on the local transport phenomena, say at the interface of each bubble, droplet or particle belonging to the system. Turbulence structures at the liquid-liquid or gas-liquid or gas-liquid-solid interfaces, responsible for the intensity of the local convective effects, are also responsible for the interface deformations. The stresses that modify the local turbulent features result in a non-trivial coupling between the phases involved. 

Our group aims to reveal complex science like wave breaking, high heat transport rates, extreme event predictions, and gas exchange rates between interfaces when turbulence plays a crucial role. Using high-fidelity numerical simulations, advanced deep learning algorithms and neural networks, we unravel turbulent features to accelerate next-generation exascale computations.


Principal Investigator

Dr Rajaram Lakkaraju is an Assistant Professor at Department of mechanical engineering, Indian Institute of Technology Kharagpur-India. He has obtained PhD for the work on boiling turbulent Rayliegh-Benard convection using HPC simulations from Physics of Fluids Group-University of Twente, The Netherlands in 2013 . Prior to that he has obtained MS in fluid dynamics for the work on Buoyancy induced shear flows from Engineering Mechanics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)-Bangalore, India in 2007. 

His research expertise include

  • Multi-phase flows
    HPC simulations of turbulent multi-phase flows with applications relevant for nature inspired and industrial reactors. Mainly, simulations for Boiling, Cavitation, Drops and Particles using Eulerian, Lagrangian, Lattice-Boltzmann, SPH and Population balance techniques. 
  • Transition and Turbulent flows
    Fundamental understanding of laminar and turbulent flow transition and thermal convection using CPUs and GPUs
  • Modeling in geophysical flows
    Upper ocean surface dynamics, gas exchange, oil spill dispersion, methane plume dispersion, pollutant transport in atmosphere, high-order computation of nonlinear ocean waves
  • Machine learning of complex systems