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Clean Combustion & Energy Research Lab

Research Highlights

Direct Numerical Simulations (DNS) of turbulent Combustion


3-D volume rendering of turbulent lifted hydrogen jet flames in heated coflow near auto-ignition limit. The coflow temperature is 750, 850, and 950 K from left to right. The stabilization mechanisms of the lifted flames are elucidated.

Turbulent lifted ethylene_air jet flame visualization

This is a visualization of a turbulent lifted ethylene/air jet flame in an autoignitive coflow where the particles are colored by temperature and the volume rendered is the hydroperoxy field.

HCCI engine combustion

ICE_Concept_Report_935428Schematic of current and future internal combustion engine concepts: Gasoline, Diesel, and HCCI engines (from Report of the Basic Energy Sciences Workshop on Basic Research Needs for Clean and Efficient Combustion of 21st Transportation Fuels, 2006, DOI: 10.2172/935428)

Schematic of reaction pathways of n-heptane oxidation at different temperatures

Isocontours of participation index of controlling reactions for SCCI combustion

Flame Instabilities


The diffusive-thermal instability of opposed nonpremixed tubular flames with small Lewis number of fuel (LeF < 1)


Hydrogen/air premixed flame stabilization over a square cylinder in a mesoscale combustor. The vortex-shedding behind the cylinder affects the stabilization of the flames