A large-eddy-simulation study of soot formation in n-dodecane and biodiesel spray flames
(2026) 28th “Journées d’Etude, Belgian Section of the Combustion Institute — Location: Leuven, Belgium (22.April.2026)
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- Abstract
- This work presents a Large Eddy Simulation (LES) study of soot formation in spray flames fueled by n-dodecane and a biodiesel surrogate representative of Karanja Methyl Ester (KME). The objective is to assess how fuel-dependent spray dynamics, flame structure, and turbu- lence–chemistry interactions govern soot formation under engine-relevant conditions. Simula- tions are performed for the ECN Spray A configuration using an LES framework coupled with a four-control-variable Flamelet Generated Manifold (FGM) combustion model. The control variables include mixture fraction, progress variable, and their variances, while temperature is obtained directly from the resolved energy equation. Soot formation is described using a multi- step phenomenological model accounting for inception from acetylene and polycyclic aromatic hydrocarbons (PAHs), surface growth, coagulation, and oxidation by O 2 and OH.
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Ponet, A., & Papalexandris, M. (2026). A large-eddy-simulation study of soot formation in n-dodecane and biodiesel spray flames. 28th “Journées d’Etude, Belgian Section of the Combustion Institute, Leuven, Belgium. https://hdl.handle.net/2078.5/274028