Tarek Echekki

Professor

  • 919-515-5238
  • Engineering Building III (EB3) 3252
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Dr. Echekki’s goal is to play an important role in the development of the next generation of combustion models. The next generation of combustion models will enable engineers to consider more daring designs in terms of the types of fuels, the range of operating conditions, the materials used, and flame stability.

At the graduate level, Dr.Echekki teaches Fluid Dynamics of Combustion I (MAE 504). This is a lecture-style course in which students, during a portion of the semester, work on projects. He also teaches Principles of Fluid Dynamics (MAE 550). This is a fundamental course with the added feature that the students in his class perform flow visualization experiments. He also teaches Turbulence (MAE 776). In his presentation of the material, there is a strong emphasis on empirically-based modeling of turbulent phenomena.

At the undergraduate level, he teaches Engineering Thermodynamics I and II (MAE 301 and MAE 302) and fluid Mechanics I (MAE 308). All of these classes are foundational. Drawing on personal experiences, he discusses new applications in combustion in the second thermodynamics course to give the students a greater appreciation of the challenges in the field and to encourage further reading.

Combustion plays an important role in the solution of many of the engineering problems that we face today. Graduate students who work with Dr. Echekki are also drawn to this area because of its breadth. The reliance of combustion on thermodynamics, heat transfer, and fluid mechanics means that it�s never boring and provides a foundation from which the student can later branch out.

Outside of work, Dr. Echekki spends time with his family and friends.

Education

Ph.D. 1993

Mechanical Engineering

Stanford University

M.S. 1987

Mechanical Engineering

Stanford University

B.S. 1985

Mechanical Engineering

Washington University, St. Louis

Research Description

Dr. Echekki is currently developing multi-scale models for turbulent combustion and improving methods for direct numerical simulation of turbulent combustion. Dr. Echekki is interested in modeling and simulation of turbulent reacting flows, low-dimensional turbulent combustion models: linear-Eddy Model (LEM) and one-dimensional turbulence (ODT), direct numerical simulations, large-eddy simulations, micro-scale combustion. In MAE he works with Dr. Edwards, Dr. Lyons, and Dr. Roberts.

Publications

A coupled LES-ODT model for spatially-developing turbulent reacting shear layers
Hoffie, Andreas F. and Echekki, Tarek (2018), INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 127(), 458-473.
Upscaling and downscaling approaches in les-odt for turbulent combustion flows
Fu, Y. Q. and Echekki, T. (2018), International Journal for Multiscale Computational Engineering, 16(1), 45-76.
Particle-filter based upscaling for turbulent reacting flow simulations
Srivastava, S. and Echekki, T. (2017), International Journal for Multiscale Computational Engineering, 15(1), 1-17.
Thermal radiation modeling using the LES-ODT framework for turbulent combustion flows
Ben Rejeb, S. and Echekki, T. (2017), International Journal of Heat and Mass Transfer, 104(), 1300-1316.
Toward computationally efficient combustion DNS with complex fuels via principal component transport
Owoyele, O. and Echekki, T. (2017), Combustion Theory and Modelling, 21(4), 770-798.
Turbulence effects on the autoignition of DME in a turbulent co-flowing jet
Echekki, T. and Ahmed, S. F. (2017), Combustion and Flame, 178(), 70-81.
An equivalent dissipation rate model for capturing history effects in non-premixed flames
Kundu, P. and Echekki, T. and Pei, Y. J. and Som, S. (2017), Combustion and Flame, 176(), 202-212.
Asymptotic analysis of steady two-reactant premixed flames using a step-function reaction rate model
Echekki, T. (2016), Combustion and Flame, 172(), 280-288.
Autoignition of n-heptane in a turbulent co-flowing jet
Echekki, T. and Ahmed, S. E. (2015), Combustion and Flame, 162(10), 3829-3846.
Principal component transport in turbulent combustion: A posteriori analysis
Echekki, T. and Mirgolbabaei, H. (2015), Combustion and Flame, 162(5), 1919-1933.
The reconstruction of thermo-chemical scalars in combustion from a reduced set of their principal components
Mirgolbabaei, H. and Echekki, T. (2015), Combustion and Flame, 162(5), 1650-1652.
Nonlinear reduction of combustion composition space with kernel principal component analysis
Mirgolbabaei, H. and Echekki, T. (2014), Combustion and Flame, 161(1), 118-126.
A nonlinear principal component analysis approach for turbulent combustion composition space
Mirgolbabaei, H. and Echekki, T. and Smaoui, N. (2014), International Journal of Hydrogen Energy, 39(9), 4622-4633.
A novel Kalman filter based approach for multiscale reacting flow simulations
Srivastava, S. and Echekki, T. (2013), Computers & Fluids, 81(), 1-9.
A novel principal component analysis-based acceleration scheme for LES-ODT: An a priori study
Mirgolbabaei, H. and Echekki, T. (2013), Combustion and Flame, 160(5), 898-908.
Complex injection strategies for hydrogen-fueled HCCI engines
Gowda, B. D. and Echekki, T. (2012), Fuel , 97(), 418-427.
LES-ODT study of turbulent premixed interacting flames
Park, J. and Echekki, T. (2012), Combustion and Flame, 159(2), 609-620.
One-dimensional turbulence simulations of hydrogen-fueled HCCI combustion
Gowda, B. D. and Echekki, T. (2012), International Journal of Hydrogen Energy, 37(9), 7912-7924.
Investigation of lifted jet flames stabilization mechanism using RANS simulations
Wang, W. and Echekki, T. (2011), Fire Safety Journal, 46(5), 254-261.
One-dimensional turbulence model simulations of autoignition of hydrogen/carbon monoxide fuel mixtures in a turbulent jet
Gupta, K. G. and Echekki, T. (2011), Combustion and Flame, 158(2), 327-344.
The regime diagram for premixed flame kernel-vortex interactions-Revisited
Vasudeo, N. and Echekki, T. and Day, M. S. and Bell, J. B. (2010), Physics of Fluids (Woodbury, N.Y.), 22(4), .
Hydrogen autoignition in a turbulent jet with preheated co-flow air
Echekki, T. and Gupta, K. G. (2009), International Journal of Hydrogen Energy, 34(19), 8352-8377.
Multiscale methods in turbulent combustion: Strategies and computational challenges
Echekki, T. (2009), Computational Science & Discovery, 3(), 013001.
ODT closure with extinction and reignition in piloted methane-air jet diffusion flames
Ranganath, B. and Echekki, T. (2009), Combustion Science and Technology, 181(4), 570-596.
One-dimensional turbulence-based closure with extinction and reignition
Ranganath, B. and Echekki, T. (2008), Combustion and Flame, 154(1-2), 23-46.
Stochastic modeling of autoignition in turbulent non-homogeneous hydrogen-air mixtures
Echekki, T. (2008), International Journal of Hydrogen Energy, 33(10), 2596-2603.
Stochastic modeling of finite-rate chemistry effects in hydrogen-air turbulent jet diffusion flames with helium dilution
Zhang, S. and Echekki, T. (2008), International Journal of Hydrogen Energy, 33(23), 7295-7306.
A low-dimensional stochastic closure model for combustion large-eddy simulation
Cao, S. F. and Echekki, T. (2008), Journal of Turbulence, 9(2), 1-35.
Autoignition in nonhomogeneous mixtures: Conditional statistics and implications for modeling
Cao, S. and Echekki, T. (2007), Combustion and Flame, 151(1-2), 120-141.
A regime diagram for premixed flame kernel-vortex interactions
Echekki, T. and Kolera-Gokula, H. (2007), Physics of Fluids (Woodbury, N.Y.), 19(4), .
The mechanism of unsteady downstream interactions of premixed hydrogen-air flames
Kolera-Gokula, H. and Echekki, T. (2007), Combustion Science and Technology, 179(11), 2309-2334.
Direct numerical simulation of premixed flame kernel-vortex interactions in hydrogen-air mixtures
Kolera-Gokula, H. and Echekki, T. (2006), Combustion and Flame, 146(1-2), 155-167.
On the role of heat and mass transport during the mutual annihilation of two premixed propane-air flames
Ranganath, B. and Echekki, T. (2006), International Journal of Heat and Mass Transfer, 49(25-26), 5075-5080.
One-Dimensional Turbulence-based closure for turbulent non-premixed flames
Ranganath, B. and Echekki, T. (2006), Progress in Computational Fluid Dynamics, 6(7), 409-418.
Proper orthogonal decomposition analysis of autoignition simulation data of nonhomogeneous hydrogen-air mixtures
Danby, S. J. and Echekki, T. (2006), Combustion and Flame, 144(02-Jan), 126-138.
Effects of preferential and differential diffusion on the mutual annihilation of two premixed hydrogen-air flames
Ranganath, B. and Echekki, T. (2005), Combustion Theory and Modelling, 9(4), 659-672.
Numerical investigation of buoyancy effects on triple flame stability
Echekki, T. (2004), Combustion Science and Technology, 176(3), 381-407.
Direct numerical simulation of autoignition in non-homogeneous hydrogen-air mixtures
Echekki, T. and Chen, J. H. (2003), Combustion and Flame, 134(3), 169-191.
High-temperature combustion in autoigniting non-homogeneous hydrogen/air mixtures
Echekki, T. and Chen, J. H. (2003), Proceedings of the Combustion Institute, 29(2003), 2061-2068.

View all publications via NC State Libraries

Grants

Acquisition of a Computational Code from Sandia National Laboratories
Sandia National Laboratories(2/15/17 - 2/15/19)
Modelling Combustion Noise Spectrum for Lean-Burn Engines
University Global Partnership Network (UGPN)(8/01/14 - 7/31/15)
Multiphysics Simulation of Injection and Combustion of Supercritical Fuels
US Air Force - Office of Scientific Research (AFOSR)(3/01/13 - 12/31/16)
Multiscale Turbulent Reacting Flows and Data-Based Modeling
National Science Foundation (NSF)(8/15/12 - 7/31/16)
Computational Methods For Multiscale Turbulent Reacting Flows
National Science Foundation (NSF)(9/01/09 - 8/31/13)
A Multiscale Approach For Turbulence, Chemistry and Radiative Heat Transport Modeling in Combustion
US Air Force - Office of Scientific Research (AFOSR)(6/01/09 - 11/30/11)
Computational and Experimental Studies Turbulent PPremixed Flame Kernels
National Science Foundation (NSF)(9/01/08 - 8/31/13)
An Approach for the Direct Simulation of Subgrid Scale Physics in Fire Simulations
NCSU NC Space Grant Consortium(7/01/07 - 6/30/09)
Acquisition of a Workstation for Serial Computation of Turbulent Reacting Flows
US Air Force (USAF)(11/30/-1 - 6/14/06)