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![]() Professor Contact - Personnal web page Recent publications received an MSc degree in Naval Architecture & Marine Engineering from the National Technical University of Athens and MSc and PhD degrees in Aeronautics from the California Institute of Technology (Caltech). Soon after the completion of his PhD, he joined the Engineering Staff of NASA's Jet Propulsion Laboratory. While at NASA, he worked mainly on thermal control and optical modeling of space telescopes, including the James Webb Space Telescope (JWST) and the Laser Interferometry Space Antenna (LISA). In 2002 he became a member of the academic personnel (faculty) at UCL where he remains until now. He is the recipient of the William Balhaus Dissertation Prize of Caltech, NASA's Space Act Award, and the NOVA Award of Excellence of NASA. Prof. Papalexandris is an Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA). The research activities of his group lie primarily on the fields of Theoretical and Computational Fluid Dynamics with particular emphasis on the fundamentals of multi-phase flows, complex fluids, reacting flows, and electrohydrodynamics. These activities cover: i) development of mathematical models for the flows of interest, ii) algorithm development and implementation for these models, iii) software verification and validation, and iv) detailed numerical studies and simulations via high performance computing. IMMC main research direction(s): Computational science Energy Fluid mechanics Keywords: non-equilibrium thermodynamics reacting flows two-phase flows Research group(s): TFL PhD and Post-doc researchers under my supervision:
Recent publicationsJournal Articles1. Sula, Constantin; Grosshans, Holger; Papalexandris, Miltiadis. Numerical study of spray combustion of a biodiesel surrogate fuel using the LES-FGM approach. In: Combustion and Flame, Vol. 249, no.C, p. 112611 (2023). http://hdl.handle.net/2078.1/269356 2. Sula, Constantin; Grosshans, Holger; Papalexandris, Miltiadis. Large‐Eddy Simulations of Spray A Flames Using Explicit Coupling of the Energy Equation with the FGM Database. In: Flow, Turbulence and Combustion, Vol. 109, no., p. 193-223 (2022). doi:10.1007/s10494-022-00320-2. http://hdl.handle.net/2078.1/260950 3. Calero, Mathieu; Grosshans, Holger; Papalexandris, Miltiadis. A computational framework for electrification of liquid flows. In: Journal of Loss Prevention in the Process Industries, Vol. 74, no.c, p. 104637 (2021). doi:10.1016/j.jlp.2021.104637. http://hdl.handle.net/2078.1/250811 4. Marichal, Joauma; Papalexandris, Miltiadis. On the dynamics of the large scale circulation in turbulent convection with a free-slip upper boundary. In: International Journal of Heat and Mass Transfer, Vol. 183, no.C, p. 122220 (2022). doi:10.1016/j.ijheatmasstransfer.2021.122220. http://hdl.handle.net/2078.1/254590 5. Varsakelis, Christos; Gelbgras, Valérie; Papalexandris, Miltiadis. On the wall boundary condition for the velocity in concentrated suspensions. In: Journal of Non-Newtonian Fluid Mechanics, Vol. 305, no., p. 104830 (2022). doi:10.1016/j.jnnfm.2022.104830. http://hdl.handle.net/2078.1/260901 6. Riffard, Anouk; Papalexandris, Miltiadis. Numerical study of the collapse of columns of sand immersed in water using two-phase flow modeling. In: International Journal of Multiphase Flow, Vol. 153, p. 104143 (2022). http://hdl.handle.net/2078.1/261158 7. Papalexandris, Miltiadis. Attenuation of gaseous detonations by porous media of fine microstructure. In: Combustion and Flame, Vol. 232, no., p. 111518 (2021). doi:10.1016/j.combustflame.2021.111518. http://hdl.handle.net/2078.1/247972 8. Hay, William Andrew; Martin, Jimmy; Migot, Benoît; Papalexandris, Miltiadis. Turbulent thermal convection driven by free-surface evaporation in cuboidal domains of different aspect ratios. In: Physics of Fluids, Vol. 33, no.1, p. 015104 (2021). doi:10.1063/5.0035277. http://hdl.handle.net/2078.1/240330 9. Grosshans, Holger; Bissinger, Claus; Calero, Mathieu; Papalexandris, Miltiadis. The effect of electrostatic charges on particle-laden duct flows. In: Journal of Fluid Mechanics, Vol. 909, no., p. A21 (2021). doi:10.1017/jfm.2020.956. http://hdl.handle.net/2078.1/240331 10. Varsakelis, Christos; Papalexandris, Miltiadis. Bridging the gap between the Darcy- Brinkman equations and the Nielsen model for tortuosity in polymer-filled systems. In: Chemical Engineering Science, Vol. 213, p. #115394 (2020). http://hdl.handle.net/2078.1/223098 Conference Papers1. Marichal, Joauma; Papalexandris, Miltiadis. Numerical simulations of evaporation driven turbulent convection driven by a descending free surface. 2022 xxx. http://hdl.handle.net/2078.1/264847 2. Calero, Mathieu; Papalexandris, Miltiadis. Electric charge generation and transport in turbulent wall bounded flows. 2022 xxx. http://hdl.handle.net/2078.1/264838 3. Carlier, Julien; Papalexandris, Miltiadis. An efficient interface-tracking method for evaporative surfaces. 2022 xxx. http://hdl.handle.net/2078.1/264842 4. Hamtiaux, Victoria; Papalexandris, Miltiadis. Numerical Simulations of turbulent thermal convection in a domain composed of a pure-fluid region and an immersed heated porous medium. 2022 xxx. http://hdl.handle.net/2078.1/264839 5. Alsteens, Louis; Papalexandris, Miltiadis. Wall modelled Large Eddy Simulation of natural convection at high Rayleigh number. 2022 xxx. http://hdl.handle.net/2078.1/264844 6. Sula, Constantin; Grosshans, Holger; Papalexandris, Miltiadis. Large Eddy Simulations of spray flames of biodiesel surrogate. 2022 xxx. http://hdl.handle.net/2078.1/264884 7. Riffard, Anouk; Papalexandris, Miltiadis. Influence of the grain size and the fluid viscosity on the collapse of submerged sand columns. 2022 xxx. http://hdl.handle.net/2078.1/264845 8. Marichal, Joauma; Papalexandris, Miltiadis. Numerical study of flow reorientations in turbulent convection with a free-slip upper boundary. In: Proceedings of the 19th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH19), American Nuclear Society, 2022, 9789076971261 xxx. http://hdl.handle.net/2078.1/258342 9. Hamtiaux, Victoria; Papalexandris, Miltiadis. Numerical simulation of thermal convection over anfd through an internally heat porous medium. In: Proceedings of the 19th International Topical Meeting on Nuclear Reactor Thermal Hydraulics NURETH19, American Nuclear Society, 2022, 9789076971261 xxx. http://hdl.handle.net/2078.1/258344 10. Riffard, Anouk; Papalexandris, Miltiadis. Collapse of submerged sand columns: the role of the grain diameter and the fluid viscosity. In: Proceedings of the 37th International Conference on Coastal Engineering, American Society of Civil Engineers, 2022, 978-0-9896611-4-0 xxx. http://hdl.handle.net/2078.1/266058 Books1. Papalexandris, Miltiadis. Gas Dynamics. Presses Universitaire de Louvain: Louvain-la-Neuve, Belgium, 2022. 978-2-39061-281-0. 239 pages. http://hdl.handle.net/2078.1/265983 2. Papalexandris, Miltiadis. Combustion and Fuels. Presses Universitaires de Louvain: Louvain-la-Neuve, 2020. 978-2-87558-979-8; 978-2-87558-980-4. 188 pages. http://hdl.handle.net/2078.1/191232 3. Papalexandris, Miltiadis. Unsplit numerical schemes for hyperbolic systems of conservation laws with source terms. 1997. 978-0-591-49445-7. 148 pages. http://hdl.handle.net/2078.1/70733 |