sreejith nadakkalappukuttan

Sreejith Appukuttan

Researcher II-Mechanical Engineering


Sreejith Nadakkal Appukuttan is a research scientist in the Computational Science Center at NREL. His research expertise is in developing numerical methods for high-performance computation of reacting and non-reacting fluid flows. Before joining NREL, he worked for General Electric, Aviation at Bengaluru, India, and for BrahMos Aerospace at Hyderabad, India.

Research Interests

Computational fluid dynamics

Aerodynamics and propulsion



Ph.D., Energy and Transfer, Institut National Polytechnique de Toulouse

M.Tech., Aerospace Engineering, Indian Institute of Technology, Kanpur

B.Tech., Mechanical Engineering, National Institute of Technology, Warangal

Professional Experience

Lead Engineer, General Electric India Technology Center (2011–2017)

Engineer, BrahMos Aerospace (2007–2009)

Featured Work

Analysis and Design of a Local Time Stepping Scheme for LES Acceleration in Reactive and Non-Reactive Flow Simulations, Journal of Computational Physics (2022)

Global Spectral Analysis of the Lax–Wendroff-Central Difference Scheme Applied to Convection-Diffusion Equation, Computers and Fluids (2022)

Numerical Simulation of 2D Transonic Flows Around Airfoils, Computers and Fluids (2013)

Large Eddy Simulation of Reactive Flow on the Fire Side of a Steam Cracking Furnace,  INFUB-12 Conference Proceedings (2020)

Numerical Study on the Effect of Methane Doping in Hydrogen-Air Rotating Detonation Engines for Various Temperatures and Pressures, NREL Poster(2022)

Computational Study of Variable Fuel-Air Ratio and Hydrogen Doping in a Rotating Detonation Engine,  NREL Presentation (2022)

High-Fidelity Numerical Simulation Study of Oxy-Combustor: Impact of Equation of State Model, 18th International Conference on Numerical Combustion (2022)

LES Of Large Flames in a Steam Cracking Furnace with Analytically Reduced Chemistry, 17th International Conference on Numerical Combustion (2022)

Numerical Simulation Of 2D Transonic Flow Around SHM1 Airfoil, International Conference on Meta Computing (2012)

Large Eddy Simulation / Computing Needs,  Conference of the American Flame Research Committee (2018)