The Georgia Tech Spray Physics
and Engine Research Lab

The SPhERe Lab conducts fundamental combustion and spray research to enable improved combustion efficiency and reductions of pollutant emissions in direct-injection gasoline, diesel and alternative fuel engines. We execute our work in a unique tightly-coupled experimental and model-based approach, integrating projects that apply advanced laser diagnostics to probe in-cylinder mixing and combustion processes with projects that utilize these measurements to validate and improve engine CFD models. Following this approach, we seek to accelerate the discovery of unknown spray and combustion physics while advancing the development of robust computational design tools to optimize engines for low emission high-efficiency performance and the use of sustainable fuels.

Simultaneous schlieren, OH* chemiluminescence, and broadband chemiluminescence/soot luminosity are used to understand the physics of combustion recession. The conditions for this case are as follows: Temperature = 900 K, Oxygen concentration = 21%, Density = 22.8 kg/m3, Injection Pressure = 1000 bar, Nozzle diameter = 90 micron, Fuel = dodecane.