Miltiadis V. Papalexandris

New members in the group

Dr. Gizem Özler has joined our group as a postdoctoral fellow. The topics of her research is forced and natural convection of two-phase systems, and thermal convection of liquids with phase change. Welcome Gizem!!

Mrs. Zhenzhen Liu has joined our group as a doctoral researcher. The topic of her research is natural convection at very high turbulence intensities, with particular emphasis on convection in pools and cavities. Welcome Zhenzhen!!

New paper

In our paper, recently published in the journal Fuel, we study the mechanism of soot formation in n-dodecane and biodiesel spray flames. According to our results, biodiesel develops a less rapidly spreading flame and produces markedly lower soot levels than n-dodecane. This reduction is linked to modified local mixture conditions and decreased availability of soot-forming precursors.

Research Activities

The research activities of our group lie primarily on the fields of Theoretical and Computational Fluid Dynamics with particular emphasis on the fundamentals of multi-phase flows, reacting flows and electrohydrodynamics.. Our activities cover: i) development of mathematical models for the flows of interest, ii) algorithm development for these models and software verification & validation, and iii) detailed numerical studies and simulations via high performance computing.

With regard to multi-phase flows, our current research activities focus on i) fluid-saturated granular materials and granular suspensions with application to sediment transport in coastal and fluvial environments, ii) flows through porous media with application to heat-transfer enhancement, iii) liquid-vapor systems with applications to nuclear-reactor safety, and iv) electric charge accumulation during the pneumatic conveying of powders and in flows of liquid dielectrics.

With regard to reacting flows, we are currently pursuing research on both subsonic and supersonic combustion. Examples include spray combustion, detonations, and frontal polymerization.

Funding of these ongoing projects is provided by the European Commission, the National Fund of Scientific Research of Belgium (FNRS), the Belgian Federal Public Service Economy and the private sector.

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