Mechanical Engineering Commons^™

Soot And Spectral Radiation Modeling For High-Pressure Turbulent Spray Flames, Sebastian Ferreyro Fernandez, C. Paul, A. Sircar, A. Imren, D. C. Haworth, Somesh Roy, Michael F. Modest

Mechanical Engineering Faculty Research and Publications

A transported probability density function (PDF) method and a photon Monte Carlo/line-by-line (PMC/LBL) spectral model are exercised to generate physical insight into soot processes and spectral radiation characteristics in transient high-pressure turbulent n-dodecane spray flames, under conditions that are relevant for compression-ignition piston engines. PDF model results are compared with experimental measurements and with results from a locally well-stirred reactor (WSR) model that neglects unresolved turbulent fluctuations in composition and temperature. Computed total soot mass and soot spatial distributions are highly sensitive to the modeling of unresolved turbulent fluctuations. To achieve reasonable agreement between model and experiment and to capture …